As a Senior Solutions Engineer for the Auth0 platform, you are a strategic, customer-centric technical expert who combines a software engineering background with a passion for identity and security. You possess that rare combination of technical savviness and business insight and are looking for a career where you can utilize both to drive revenue directly and through a thriving partner ecosystem.

You will be a trusted advisor to both customers and a portfolio of strategic partners. You will partner with our sales and alliances teams to demonstrate, design, and validate identity solutions that solve complex challenges and contribute directly to our growth. You will empathize with customers, quickly discern their true needs, and architect solutions that deliver exceptional outcomes.

This position is based in Warsaw, Poland. The role is remote, with the expectation of a transition to a hybrid office model in the future (2-3 days per week).

What You’ll Be Doing

• Act as the primary technical and identity domain expert during the sales cycle for both direct customers and partners.
• Deliver compelling product demonstrations, architecture walkthroughs, and whiteboard sessions to a wide range of audiences, from developers to C-level executives.
• Lead and support technical validation activities such as Proofs of Concept (PoCs).
• Collaborate with Account Executives on territory and account strategies to win new business.
• Build and manage deep technical relationships with assigned Partners, teaming with the Okta Partner Account Team to drive incremental revenue through the channel.
• Become a trusted advisor to your partners on all matters related to Identity and Access Management, helping them integrate Okta into their Go-To-Market (GTM) strategy.

What You’ll Bring to the Role

• 5+ years of customer-facing technical role (e.g., pre-sales engineering, consulting, professional services).
• A strong passion for serving the customer and our partners, ensuring their success.
• Understanding of Identity and Access Management (IAM) concepts and security protocols, including OAuth 2.0, OIDC or SAML.
• Knowledge of modern approaches to software development/hosting: familiarity with cloud platforms (AWS, Azure, GCP).
• Communication and presentation skills, with the ability to articulate complex technical ideas and business value to a highly skilled audience.
• Fluency in Polish and English is required.

Nice to Have

• A Bachelor's degree in Engineering, Computer Science, MIS, or a comparable field.
• Hands-on experience with code: understand, troubleshoot, and preferably write in one or more of the following development areas: web (JavaScript, HTML, frontend frameworks), mobile (iOS, Android), or backend (Java, C#, Node.js, Python, PHP, Ruby).
• Demonstrated ability to architect and integrate CIAM solutions across web, mobile, and cloud platforms.
• Expertise in AI-driven customer experience integration with Auth0, including AI agents for internal or external use-cases, MCP servers, and Fine-Grained Authorization
• Public speaking, technical blogging, or conference presentation experience.
• Fluency in additional European languages is a strong plus.

#LI-Hybrid
#LI-JB2

As our Product Design Lead, you will be the driving force behind the mobile experience for our diverse portfolio of iGaming products. Reporting directly to the Director of UX, you won’t just be managing pixels, you'll be architecting the future of how millions of users interact with our apps.

You will lead, mentor, and inspire a multidisciplinary team of UX and UI Designers, ensuring that our native iOS/Android apps and mobile web platforms are not only visually stunning but also technically robust and compliant.

The role is fully on-site in Warsaw office.

Relocation support will be provided if needed.

Requirements:

• Leadership & Team Growth: Proven experience as a UX Lead, Product Design Lead, or Design Manager. You have a track record of building, mentoring, and upskilling high-performing teams, transforming individual contributors into a cohesive powerhouse.
• Mobile-First Expertise: Extensive experience leading design for native mobile (iOS/Android) and mobile web. You understand the nuances of HIG and Material Design, and you know how to bridge the gap between web and app ecosystems.
• iGaming/High-Stakes Experience: A deep understanding of the iGaming, GameDev sectors. You know how to design for engagement and "joy" while navigating strict regulatory requirements and complex user flows.
• Process Engineering: Demonstrated ability to set up, optimize, and govern end-to-end design processes. You are an expert at identifying workflow bottlenecks and implementing scalable frameworks that align with Agile/Scrum environments.
• Strategic Problem-Solving: You are a strategic thinker who tackles complex business challenges (retention, conversion, compliance) through design, rather than just overseeing visual execution.
• Systemic Thinking: Deep experience establishing and scaling multi-platform design systems in Figma, specifically optimized for high-speed developer handoff and brand consistency across multiple products.

Duties & Opportunities:

• Lead & Educate: Act as the primary mentor for our UX and UI designers. You will assess skill gaps, create personalized growth plans, and foster a culture of "design excellence" where continuous learning is the norm.
• Process Ownership: Define and own the design lifecycle. From discovery to delivery, you will establish the rituals (critiques, sprints, handoffs) and quality standards that ensure the team operates with maximum efficiency.
• Strategic Partnership: Work closely with Product Managers and Engineering Leads to translate ambitious iGaming business goals into viable, user-centric product strategies.
• Design System Governance: Oversee the evolution of our multi-product design system. You’ll ensure it remains scalable, technically feasible.
• UX Advocacy: Champion the value of user-centricity (including usability testing and data-driven feedback loops) at the leadership level, ensuring our mobile products are shaped by real player behavior.

Why This Role?

You will have the autonomy to shape the design culture of a leading iGaming suite. This isn't just about maintaining our apps; it's about leading a team to redefine the mobile betting and gaming experience in a fast-paced, high-reward industry.

We offer excellent benefits, including but not limited to:

• Career growth opportunities in an international and dynamic environment;
• Opportunity to develop language skills with partial compensation for language courses;
• Special gifts for birthdays, weddings, and newborns;
• 20 working days of paid annual vacation, plus paid sick leaves;
• Office snacks and refreshments;
• Sports package to support a healthy lifestyle;
• Comprehensive medical insurance for you and your partner;
• Comfortable office with great facilities in a prime location;
• Exciting corporate events, team-building activities, and international company parties.

Location: Poland

We Are:
RTB House is a global company that provides state-of-the-art marketing technologies for top brands and agencies worldwide. Its proprietary ad-buying engine is the first in the world to be powered entirely by Deep Learning algorithms, enabling advertisers to generate outstanding results and reach their goals at every stage of the funnel.

You Will:
As a Senior Technical Researcher/Engineer within the AdTech Technical Research Team, you'll play a pivotal role in exploring and understanding the latest technologies in the ad tech domain. You'll be responsible for conducting in-depth research, experimenting with new technologies, and collaborating with cross-functional teams to assess their potential for integration into our systems. Your role will involve a blend of programming, research, and analytical skills to evaluate the effectiveness and feasibility of various ad tech solutions.

Desired Experience:

• 5+ years of experience as researcher or engineer.
• Strong technical proficiency: programming skills and the ability to understand large and complex systems and architectures.
• Openness and willingness to experiment & learn: readiness to take on new challenges, explore new technologies, and continuously expand knowledge in the ad tech domain.
• Independence & proactive attitude: ability to take initiative, make decisions, and act without excessive supervision while maintaining a high standard.
• Goal-oriented mindset: focus on achieving specific project goals and adaptability in a dynamic environment.
• Collaboration & communication: ability to cooperate effectively with teammates and other teams, clearly sharing knowledge and cooperating with external organizations (e.g. major browser vendors, W3C, GitHub discussions).
• Ability to build Proof of Concepts (PoCs): creating prototypes and experimental solutions to evaluate effectiveness and utility.
  
  

Selected Technologies & Projects:

• Python, Java, Scala, TypeScript/JavaScript
• PyTorch, NumPy, Pandas
• Jupyter Notebooks
• BigQuery, GCP
• Browser Engines
• Assessing new privacy mechanisms (e.g. Privacy Sandbox APIs) by building PoCs, testing, and suggesting improvements (via GitHub issues or meetings). The goal is to evaluate their feasibility, ensure compliance, and enhance user privacy.
• Exploring solutions for Android and iOS, including creating prototypes to improve performance on mobile platforms. This requires close collaboration with other teams and leveraging ML opportunities.
• Many more — including your own ideas!

We Offer:

• Technology: access to the latest technologies and real opportunity to use of them in a large-scale and highly dynamic projects; extensive and rich datasets
• Impact: your contribution will directly influence the company's business results and outcomes globally, while also giving you the chance to mentor less experienced colleagues in the team
• Wellbeing: extremely flexible conditions – you act when it is convenient for you and devote as much time as you can; you can operate fully remotely
• Culture: be part of a team of enthusiasts with wide experience in ML who willingly share their knowledge and learnings on a daily basis, no BS environment
• Contract Types: B2B

Apply now! 

You don't need to tick every box to apply. If you are passionate about digital marketing, send us your CV, and we'll review it.

What is Box?

Box is the world's leading Content Cloud. We are trusted by more than 115K organizations around the world today, including nearly 70% of the Fortune 500 and leaders across deeply regulated industries (such as JLL, and Nationwide), to protect their data, fuel collaboration, and power critical workflows with secure, enterprise AI.

By joining Box, you will have the unique opportunity to continue driving our platform forward. Content powers how we work. It's the billions of files and information flowing across teams, departments, and key business processes every single day: contracts, invoices, employee records, financials, product specs, marketing assets, and more. Our mission is to bring intelligence to the world of content management and empower our customers to completely transform workflows across their organizations. With the combination of AI and enterprise content, the opportunity has never been greater to transform how the world works together and at Box you will be on the front lines of this massive shift.

Founded in 2005, Box is headquartered in Redwood City, CA, and we have offices across the United States, Europe, and Asia.

Why Box needs you?

We're looking for a Staff Engineer to join our Mobile team in Warsaw and lead a strategic platform transformation. Our mission is to deliver a world-class mobile experience that keeps pace with our web product — and to do that, we're moving to React Native as our cross-platform foundation.

You will be the technical anchor of this multi-year initiative: setting the architectural direction, driving the adoption of React Native across the team, and enabling us to ship the same features on iOS, Android, and web from a single codebase. Mobile is a high-visibility surface used by millions of Box customers, and this role sits at the heart of how we evolve it.

This is not a solo contributor role. We have firepower in the team. What we need is someone who can coach engineers, build engineering culture, and make the transformation stick — not just close the gap once, but establish a sustainable, scalable way of building cross-platform products at Box.

Who you are?

We are an AI-first company. This means you approach your work with a growth mindset and find ways to leverage AI to help make faster, smarter decisions that will 10X your impact at Box.

• 8–10+ years of professional software engineering experience
• Deep, hands-on expertise in React Native - this is the single most critical requirement for this role
• Proven experience building cross-platform mobile products targeting iOS, Android, and web
• (Ideally) have personally led or been a key contributor to a migration from native iOS/Android to React Native
• Strong understanding of both iOS and Android platform fundamentals
• Excellent cross-functional collaboration and communication skills - you know how to work with product, design, and platform teams
• Experience mentoring engineers and developing team capabilities
• Must speak English proficiently

Bonus points for

• Experience driving platform or architectural transformations in a product company
• Familiarity with web technologies (React) and how they intersect with the React Native ecosystem
• You act like an owner and strive to do work you're proud of, both technically and in your team interactions
• Experience working on mobile products at scale with large, cross-functional engineering organisations

What you'll do?

• Define and drive the technical direction and architecture of Box's React Native migration
• Coach and upskill mobile engineers, embedding React Native best practices across the team
• Collaborate, influence, and drive alignment across mobile, web, product, and platform teams
• Attend and engage in weekly stand ups, team meetings, and manager 1:1s
• Model solid engineering practices around architectural design, testability, scalability, and maintainability
• Partner with Engineering Managers, Product Managers, and cross-functional stakeholders to shape the mobile roadmap
• Contribute hands-on code (~50% of time) on the most architecturally critical areas
• Participate in our on-call rotation, available at all times while on-call to help respond to and triage any issues that arise

Box lives its values, with community and in-person collaboration being a core part of our culture. Boxers are expected to work from their assigned office a minimum of 3 days per week, with a focus on Tuesdays, Wednesdays and Thursdays. Your Recruiter will share more about how we work and company culture during the hiring process.

Equal Opportunity

We are an equal opportunity employer and value diversity at our company. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, disability, and any other protected ground of discrimination under applicable human rights legislation.

For details on how we protect your information when you apply, please see our Personnel Privacy Notice. For more details on how Box Poland protects your information, please see our Supplemental Personnel and Candidate Privacy Notice.

#LI-EMEA #LI-RB1 #LI-HYBRID

We’re looking for a Full Stack Engineer to join the Documents Team. Our team is working on building and scaling a new web application, expanding the ecosystem of one of our key products. This is a great opportunity to have a real impact on product decisions, architecture, and user experience while working across both frontend and backend.

What you’ll do: 

• Developing user-facing application(s):

             - Main stack is Typescript, React, Nextjs, Tailwind

             - Back-end is Node, Nestjs, Postgres, AWS

• Back-end tasks to power new functionality for both web and iOS app
• Working with product and marketing teams to define clear requirements and estimates
• Writing tests
• Always teaching others and giving helpful feedback
• Good SEO and accessibility is a must
• Experience with various third-party integrations as we will integrate more and more

About you:

Front-end:

• React, CSS
• Next.js, TailwindSEO
• SEO, Accessibility
• Smooth animations
• Responsive UI
• Pixel-perfect implementation

Back-end:

• Nest.js and Postgres
• Distributed systems and event-based architecture
• SQL skills and experience working with ORMs
• CI/CD, and infrastructure setup
• Third-party integrations and their side-effects

Overall:

• Strong English skills (we have several required meetups in English, plus engineers present the features themselves in English)
• Enjoy working on pet projects, finds opportunities to learn and try something outside of work projects only
• Enjoy both back-end and front-end.

Would be a plus:

• AI integrations
• External LLM tools, like LangFuse, LangChain, etc.
• Desire to build automations
• Interest in knowledge sharing

PDF Expert is one of the most loved PDF apps, trusted by over 30 million people worldwide to read, edit, annotate, and manage PDFs seamlessly across Mac, iPad, and iPhone. Recognized as “App of the Year,” an “Apple Editor’s Choice,” and a Red`Dot Design Award winner, PDF Expert sets the standard for effortless document workflows.

About the role:

As a Senior Product Manager, you will own a product area end-to-end: identify high-impact opportunities, lead discovery, align cross-functional teams, and drive initiatives from idea to launch and measurable impact. The role spans iOS, Mac, and Web, and sits at the intersection of user value, growth, monetization, and professional workflows.

This role is a strong fit for a hands-on PM with sharp product judgment, strong analytical skills, and the ability to turn ambiguity into clear priorities and execution-ready initiatives.

What you will do:

• Own a meaningful product area and define success in user and business terms
• Identify and prioritize high-impact opportunities grounded in user needs, product data, market insight, and business goals
• Lead discovery through user research, analytics, experimentation, and validation
• Turn opportunities into clear product requirements with defined scope, rationale, metrics, and tradeoffs
• Align engineering, design, analytics, and marketing partners around priorities and decisions
• Prioritize roadmap and backlog across iOS, Mac, and Web
• Drive initiatives from idea to launch and measurable outcomes
• Monitor results after launch and recommend whether to scale, iterate, or stop.

About you:

• Proven track record of owning product development and launching impactful features
• Strong analytical skills — fluent in metrics, funnels, experimentation, and analytical tools
• Deep user empathy — experience conducting or leveraging user research to inform decisions
• Strategic thinking — the ability to connect product work to broader business and user goals
• Experience working in cross-functional teams (including design, engineering, and research)
• Comfortable operating with high autonomy in ambiguous environments
• Excellent written and verbal communication
• Strong understanding of mobile UX and product lifecycle
• Outcome-driven mindset — always looking for the impact of product decisions
• Hands-on experience with AI tools for automating product workflows or enhancing team productivity.

Would be a plus:

• Experience in both mobile and web platforms.
• Background in productivity, file management, or a similar niche
• Prior experience working on or shipping AI-powered features/products
• Comfortable experimenting with AI-prototyping / "vibe-coding" tools

Why this role:

• Own major product opportunities in a flagship, category-leading product with proven market fit
• Work on a product used by millions of people, with clear user and business impact
• Lead a product area from strategy and opportunity sizing through execution, launch, and measurable business impact
• Build expertise in AI-powered productivity, professional workflows, and growth at scale
• Work across iOS, Mac, and Web with a strong cross-functional team including engineering, design, marketing, and analytics

We are looking for a System Designer to join our team and help build, update, and maintain our design systems. In this role, you will: Create & Update Systems: Develop and continuously update our design systems to keep them modern, scalable, and aligned with current trends.
Collaborate & Mentor: Work closely with other designers—potentially managing and teaching them—to ensure a consistent design approach across all tools.
Integrate Feedback: Incorporate new features from the UX team and suggestions from stakeholders to improve and expand our design systems.

The role is fully on-site in Warsaw office. 

Relocation support will be provided if needed.

✅ Requirements:
✔️4+ years of experience in UX/UI design.

✔️3+ years of experience working on or managing design systems.

✔️Experience designing for multiple platforms, including Web, iOS, and Android.

✔️Excellent understanding of Figma, its tokens, autolayouts and all the latest updates.

✔️Incorporate new features to the Design System as well as adjustments gathered from different sources.

✔️Good knowledge of HTML, CSS, and the basics of client-server architecture.

✔️Ability to work collaboratively in a cross-functional team with a low-ego, high-impact mindset. 

✔️The candidate should have an engineering mindset, applying systematic, analytical thinking to design and refine scalable, integrated design solutions.

✔️Strong presentation and documentation skills, with an eye for detail in visual design and brand consistency.

✅ Responsibilities:

✔️Design creative solutions for A/B testing and experiments across digital platforms.

✔️Partner with Product Owners to define business requirements and collaborate with researchers for insights.

✔️Collaborate with analytics to analyze test results and user feedback to iterate and refine designs.

Requirements:

• Leadership & Management: Proven experience as a UX Lead or Design Manager, with a strong track record of building, mentoring, and upskilling high-performing design teams.
• Cross-Platform Expertise: Extensive experience designing and managing products across native mobile (iOS/Android), mobile web, and desktop web environments.
• Process Engineering: Demonstrated ability to set up, optimize, and govern end-to-end design processes. You know how to identify workflow bottlenecks and implement scalable frameworks.
• Problem-Solving Mindset: A strategic thinker who focuses on solving complex product and business challenges rather than just executing visuals.
• Design Systems: Deep experience establishing and scaling comprehensive, multi-platform design systems using tools like Figma, optimizing them for team efficiency and developer handoff.
• Industry Knowledge: Solid understanding of the iGaming or Gamedev or FinTech industry, with a passion for creating engaging, compliant, and seamless user experiences across all devices.

Duties & Opportunities:

• Team Development & Mentorship: Act as a true manager and educator. Assess team skills, identify growth opportunities, and run initiatives to upskill designers and foster a culture of continuous learning and excellence.
• Process Setup & Optimization: Define and own the design lifecycle. Establish clear workflows, rituals, and quality standards to ensure the team operates smoothly and integrates seamlessly with agile development cycles.
• Cross-Platform Design Strategy: Drive the overarching UX vision across native apps, mobile web, and desktop web, ensuring a cohesive, scalable, and intuitive iGaming ecosystem.
• Strategic Problem Solving: Act as the primary design problem-solver. Partner closely with product managers, developers, and stakeholders to translate complex iGaming business requirements into viable, user-centric design strategies.
• Design System Governance: Oversee the strategic development and maintenance of our multi-platform design system, ensuring consistency, technical feasibility, and speed-to-market.
• UX Advocacy: Champion the value of user-centric processes (like usability testing and data-driven feedback loops) at the leadership level, ensuring design has a strong voice in product decisions.

We offer excellent benefits, including but not limited to:

🚀 Career growth opportunities in an international and dynamic environment;

📚 Opportunity to develop language skills with partial compensation for language courses;

🎁 Special gifts for birthdays, weddings, and newborns;

🏝️ 20 working days of paid annual vacation, plus paid sick leaves;

🍲 Office snacks and refreshments;

🏋️ ♂️ Sports package to support a healthy lifestyle;

🩺 Comprehensive medical insurance for you and your partner;

📍 Comfortable office with great facilities in a prime location;

🎉 Exciting corporate events, team-building activities, and international company parties.

Are you passionate about designing and building technology that connects the physical and digital worlds? Do you thrive on leading complex projects and mentoring other engineers, while working with cutting-edge IoT devices?

Alarm.com is seeking a Senior Software Engineer to join our Protocols Team, which develops and maintains the communication backbone that powers millions of smart home devices worldwide.

In this role, you will drive the design and delivery of robust, scalable solutions that enable seamless device interoperability. You will collaborate across teams to define technical strategy, guide architecture decisions, and ensure high-quality implementation. Your work will directly influence the performance, security, and reliability of our platform.

If you enjoy solving challenging problems, improving processes, and mentoring future engineering talent, we would love to talk to you.

What You Will Do

• Lead the design, development, and maintenance of full-stack software across diverse platforms and technologies.
• Architect solutions that balance scalability, performance, and maintainability for device protocol communications.
• Research emerging technologies and champion adoption where they can bring significant value.
• Guide the software development life cycle from requirements gathering through deployment, monitoring, and optimization.
• Collaborate with product managers, QA, and other engineering teams to deliver impactful solutions.
• Make strategic technical decisions, setting direction for projects and influencing the broader team’s approach.
• Mentor junior and mid-level engineers, providing code reviews, architectural coaching, and career guidance.
• Contribute innovative ideas and drive continuous improvement in both product and process.

What You Bring

• Bachelor’s or Master’s degree in Computer Science, Computer Engineering, or a related field, or equivalent professional experience.
• 5+ years of professional software development experience, with proven success in delivering complex projects.
• Advanced object-oriented programming skills, preferably in C#.
• Strong experience with database design, SQL, and backend services.
• Proficiency with modern JavaScript frameworks such as Ember.js, Angular, or React a plus.
• Experience in the IoT and/or home automation field is a plus.
• Solid track record of implementing and improving unit testing and automated testing strategies.
• Experience in distributed systems, real-time communications, or high-performance applications.
• Excellent communication skills and ability to lead cross-functional collaboration.

Why You Will Love Working Here

• Collaborate with exceptional peers. Work alongside talented engineers who value innovation and excellence.
• Shape technical direction. Influence architecture decisions that impact millions of connected devices globally.
• See your impact. Watch your solutions interact with and power IoT hardware in real-world environments.
• Mentor and grow talent. Help guide the next generation of engineers while building high-performing teams.
• Work with cutting-edge technology. Our stack includes C#, .NET, SQL Server, Kafka, Ember.js, and native iOS/Android apps.
• Long-term employment based on a permanent employment contract (CoE).
• Attractive benefits package: including medical care, life insurance, sports package, annual budget for professional development ($2,000).

COMPANY INFO

Alarm.com is the leading cloud-based platform for smart security and the Internet of Things. More than 7.6 million home and business owners depend on our solutions every day to make their properties safer, smarter, and more efficient. And every day, we’re innovating new technologies in rapidly evolving spaces including AI, video analytics, facial recognition, machine learning, energy analytics, and more.  We’re seeking those who are passionate about creating change through technology and who want to make a lasting impact on the world around them. 

EBS Sp. z o.o. is a dynamically growing Polish technology company with over 35 years of experience, specializing in the development of smart security solutions. We are part of the American corporation Alarm.com, a leading global provider of intelligent security solutions for homes and businesses.

For more information, please visit www.alarm.com or ebssmart.com

Alarm.com is an Equal Opportunity Employer

 In connection with your application, we collect information that identifies, reasonably relates to, or describes you ("Personal Information"). The categories of Personal Information that we may collect include your name, government-issued identification number(s), email address, mailing address, other contact information, emergency contact information, employment history, educational history, criminal record, and demographic information. We collect and use those categories of Personal Information about you for human resources and other business management purposes, including identifying and evaluating you as a candidate for potential or future employment or future positions, recordkeeping in relation to recruiting and hiring, conducting criminal background checks as permitted by law, conducting analytics, and ensuring compliance with applicable legal requirements and Company policies. By submitting your application, you acknowledge that we may retain some of the personal data that you provide in your application for our internal operations, such as managing our recruitment system and ensuring compliance with labor laws and regulations, even after we have made our employment decision.We will retain this data for a maximum of 3 years after the end of the recruitment process. The data administrator is EBS Sp. z o.o.

We are looking for a skilled Senior Flutter Developer.

✅ Responsibilities:
✔️ Development and improvement of crucial components of the platform
✔️ Make the product testable
✔️ Participate in grooming, planning, tech, and estimation sessions
✔️ Make your own decisions on the architecture level
✔️ Bring fresh and innovative ideas into the company’s processes
✔️ Support and improve product documentation
✔️ Couch Middle/Junior team members
✔️ Code review

✅ Requirements:

✔️ 3+ years of hands-on mobile development experience (Android or iOS)

✔️ 2+ years of hands-on Flutter development experience (at least 1 application released in the store)

✔️ Solid knowledge of Dart (including Dart streams / RxDart)

✔️ Solid knowledge of mobile architecture principles

✔️ Good knowledge of OOP/SOLID principles

✔️ Good knowledge of REST and Sockets

✅ Nice to Have:
✔️ Kotlin

✔️ Java

✔️ Swift

✔️ Experience with CI/CD process

✔️ Experience with Unit and Functional testing of mobile applications

✅ We offer excellent benefits, including but not limited to:
✔️Snacks in the Office;
✔️20  days of vacation per year;
✔️6 days of sick leaves without document required;
✔️Attractive office location and facilities - Loftmill;
✔️Medical insurance for you and your partner;
✔️Sports package;
✔️Birthday, wedding, and newborn gifts;
✔️Languages classes (partially paid by the Company);
✔️Career growth opportunities;
✔️International corporate parties, great team-building events and activities.

The Spark email app stands as one of our flagship products, designed for various platforms, including iOS, macOS, Android, and Windows. Our mission at Spark has always been to make you love your email experience - we started by making email smart, and improved team collaboration, and now we’ve tackled information overload to make email focused. Our core features are designed to heighten your focus and allow you to create customized workflows that suit your needs.

About the role:
As a Senior Back End Engineer, you will architect robust backend services for tasks like database scaling, synchronisation across devices, and integration with other services (e.g., calendars); and optimise the performance of critical components. You will contribute to the team's growth by mentoring newcomers, conducting code reviews, and fostering a culture of knowledge sharing.

What you’ll do:

• Build distributed, scalable, and fault-tolerant systems in the cloud using Golang.
• Develop tools for running and monitoring the system and ensure reliable operations at optimal performance.
• Work closely with the product manager and client development teams to define architecture, protocols, and requirements for new functionalities.
• Collaborate with the team and contribute to the overall success of the project

About you:

• Strong background in backend development, including high proficiency in Golang
• Experience with distributed systems and high-load services
• Knowledge of relational database systems and key-value stores
• Basic knowledge of Kubernetes
• Experience with cloud platforms like AWS or GCP
• You demonstrate a deep passion for the products you contribute to
• You're great at thinking ahead, foreseeing how your work shapes the user experience 
• You know how to deliver product quality in optimal development time
• You have a keen eye for both zooming in on details and seeing the big picture
• You are highly flexible and self-motivated, with the ability to work independently and in a team

Would be a plus:

• Knowledge of data structures and algorithms (DSA)
• DevOps skills 
• Familiarity with NoSQL
• Experience in front-end development using modern Javascript frameworks
• Contributions to the open-source community
• Experience with scripting languages like Python, Ruby, Shell