As an iOS Engineer at Flo, you'll help shape the mobile experience for millions of people, and do genuinely meaningful work in women's health. Our app is trusted by 1 in 4 women aged 18–44 in the US and used across 100+ countries, with machine learning and AI powering accurate cycle predictions and personalised, medically credible health insights.

We build large-scale mobile applications with rich, intuitive interfaces - optimised for speed, accessibility and privacy. You'll join a cross-functional team working across the full mobile lifecycle, from feature ideation through to release and iteration, with real ownership over value delivery end to end.

We're not a feature factory. Our engineers are pragmatic problem-solvers who thrive in fast-moving environments and care about what they ship. You'll have genuine scope to experiment, lead ambitious product initiatives and implement solutions that matter - not just clear a backlog. Flo is a constantly evolving product, and we give our engineers the trust and autonomy to evolve it.

Your Experience

• 6+ years in software engineering, with at least 3 years focused on building, shipping, and maintaining production mobile applications.
• Expert-level iOS development skills, with a proven track record of delivering high-quality apps at scale.
• Hands-on experience building complex mobile applications with rich, performant UIs — experience in global consumer-facing products is a strong plus.
• Deep proficiency in Swift; working knowledge of Objective-C and solid object-oriented design principles.
• Strong familiarity with Apple's ecosystem — frameworks, HIG guidelines, and end-to-end App Store submission and maintenance processes.
• Clear understanding of the mobile product lifecycle and comfortable working within Agile teams.
• A collaborative, growth-oriented mindset with the drive to take ownership and deliver.

Nice to have:

• Solid understanding of UX and interaction design principles, with the ability to collaborate effectively with designers and advocate for quality user experiences.
• Proven experience optimizing mobile app performance over constrained networks, including building and maintaining offline-first architectures.
• Hands-on experience with mobile CI/CD pipelines, including build automation, automated testing, and release workflows.
• Experience integrating with BI and analytics platforms, with familiarity in designing and interpreting A/B tests to drive product decisions.

What you'll be doing

You'll be responsible for:

• Building and maintaining features using modern frameworks, libraries, and internal component systems, ensuring consistency, scalability, and code quality across the codebase.
• Delivering polished, engaging user experiences that balance visual appeal with intuitive interaction design.
• Owning and contributing to a robust Continuous Delivery pipeline, ensuring fast, reliable, and safe releases to production.

#LI-Hybrid #LI-AJ1

Join Proton and build a better internet where privacy is the default

At Proton, we believe that privacy is a fundamental human right and the cornerstone of democracy. Since our inception in 2014, founded by a team of scientists from CERN, we have dedicated ourselves to providing free and open-source technology to millions worldwide, ensuring access to privacy, security, and freedom online.

Our journey began with Proton Mail, the largest secure email service globally, and has since expanded to include Proton VPN, Proton Calendar, Proton Drive, and Proton Pass. These tools empower individuals and organizations to take control of their personal data, break away from Big Tech’s invasive practices, and defeat censorship. Our work impacts hundreds of millions of lives, from activists on the front lines defending freedom to leaders in governments protecting sensitive information. In some cases, Proton’s services have even been instrumental in saving lives by enabling secure and private communications in high-risk situations.

Proton today supports over 100 million user accounts with a growing team of over 500 people from over 50 different countries, from the world's top companies and universities. We value intelligence, learning potential, and ambition in our hiring process. Adaptability is key as we navigate uncharted territories and redefine how business is conducted online. We believe smaller teams of exceptional talent will always prevail over larger teams with lower talent density. Proton has become profitable and reached scale without relying upon VC funding, largely due to superior talent that allows us to do things faster, more creatively, and more efficiently.

We have a global mindset and big ambitions but remain a start-up at heart. We value empowerment and flexibility and keep our structure flat to keep moving fast and avoid unnecessary politics. Tired of blending into the crowd? Join us and do work you can truly be proud of. Check our social media pages to learn more about us: Twitter, Reddit, Instagram.

The role:

You will be responsible for designing, building, maintaining and evolving Proton applications on Windows. This includes not only building the application internals (managing and syncing local and remote state, performing cryptographic operations, etc) but also helping us to build a resilient, scalable application (graceful degradation; log and metrics streams free of personally identifiable information). You will be involved in the entire application lifecycle, including Gitlab configuration, deployments, monitoring and alerting, and operational incident response. While this position is not a "full-stack" position, you will be expected to collaborate with backend engineers to drive any necessary changes and/or new features needed for the Windows experience.

What you will do:

• Be part of a small team working to bring a "privacy by default" solution to our clients on Windows.
• Develop an application that delights a wide range of users, from layperson to technical, and gives confidence that their online privacy is in good hands - while getting the complexity of end-to-end encryption out of the way.
• Invest in testing and automation to improve the team's productivity and software delivery cadence.
• Think critically on how to divide problems into iterations of simpler, composable solutions. Re-evaluate the minimum scope as necessary to meet objectives on-time.
• Insist on high standards for application monitoring and alerting, in order to ensure a smooth customer experience at all times.

We we are looking for:

• Strong experience in .NET development
• Strong experience building and maintaining Desktop Windows applications
• Strong experience with concurrent multi-threaded programming
• Working knowledge of file systems
• Working knowledge of Git
• Bachelor's or master’s degree in a relevant field of study
• Experience with owning and maintaining large software components
• Experience with gradual rollouts and metrics/monitoring/alerting frameworks

Even if you don’t meet all the requirements listed above, but feel you could still be a great fit, please still apply.

What We Offer

• Office First: Collaboration is easier and more effective in person, which is why we have offices in Geneva, Zurich, Prague, Barcelona, Paris, London, Vilnius, Skopje, and Taipei. You can also enjoy working from home up to 30% of the time, while enjoying great company during our three core days in the office. 
• Technology: We provide all the devices and software you need to excel in your role, ensuring you have the best tools at your disposal to achieve your goals.
• Food: Lunch and snacks are provided by Proton every day at our offices.
• Transport: We will always support our employees with transport costs through subsidizing public transport, bike allowances, or parking spaces based on your office location.
• Stock Options: At Proton, we are all owners of the company and you get stock options when you join us.
• Flexible Working: You can define your own working hours as long as it works with team meetings.
• Learning and Development: We are committed to your professional growth. Proton offers various learning opportunities, including training programs, conferences and events, and continual learning.
• Employee Benefits: Comprehensive health insurance plans, competitive retirement savings options, generous vacation and leave policies, and wellness programs.
• Work that Matters: Proton is a community-first organization, started with the support of a crowdfunding campaign and built with community input. To this day, Proton’s only source of revenue is user subscriptions. Over 100 million people trust and support Proton, and we put our users and community first in everything we do. Read more about our impact here.

Our Commitment to Diversity and Inclusion

At Proton, we believe diversity drives innovation and strengthens our mission to provide privacy as a default for all. We are committed to fostering an inclusive environment where all individuals, regardless of race, ethnicity, gender, age, sexual orientation, physical ability, or socio-economic background, feel valued and empowered. We strive to create equal opportunities, promote open dialogue, and support continuous learning to ensure every voice is heard and respected.

If you need any extra support or reasonable adjustments during the hiring process, please let your talent partner know.

Candidate Privacy Notice

When you apply for a position, refer a candidate, or are considered for a role at Proton Technologies AG (Proton, we, us, or our), your information is stored in Greenhouse, in accordance with their Service Privacy Policy. This information is used to evaluate your suitability for the posted position. We also retain this information for consideration for future roles that you may apply for or that we believe may align with your background and skills.

If we no longer have a legitimate business need to process your information, we will either delete or anonymize it. Should you have any inquiries about how we use or manage your information, or if you wish to access, correct, or delete your data, please contact our privacy team at careers@proton.ch.

Proton does not accept unsolicited resumes from any sources other than directly from candidates. We will not pay a fee for any placement resulting from an unsolicited offer, even if the candidate is subsequently hired by Proton.

To learn more about our privacy policy, please visit our privacy policy page.

#LI-ONSITE

• 7+ years of hands-on Android development experience, with a track record of shipping and maintaining production applications at scale
• Experience building large, complex mobile applications with polished, performant UIs - ideally for global consumer audiences
• Strong proficiency in Java, with solid object-oriented design principles and a keen eye for clean, maintainable code
• Deep knowledge of the Android ecosystem - including platform fragmentation, UI design patterns, and delivering consistent experiences across a wide range of screen sizes and devices
• Solid familiarity with Google technologies, Play Store submission processes, and Google's development guidelines
• A good grasp of the full mobile product lifecycle, with practical experience working within Agile teams

Nice to have:

• Knowledge of Kotlin programming language, Clean Architecture and reactive programming
• An eye for UX and interaction design - you care about how things feel, not just how they work
• Hands-on experience with mobile CI/CD tooling, including build, test and release automation
• Experience integrating with analytics and BI systems, including A/B testing frameworks
• Experience with alternative Android markets
• Experience optimising data usage over mobile networks and building offline-first applications

• Developing features using modern frameworks, libraries and in-house components - contributing to a shared codebase built to last
• Delivering polished, intuitive user experiences that meet a high bar for design and usability
• Maintaining and improving a continuous delivery pipeline, ensuring fast, reliable and safe releases to production

#LI-Hybrid #LI-AJ1

Ambitious’, ‘innovative’, ‘highly product-focused’ - those are the words you’d hear if we were asked to describe our Engineering teams. 

They focus on product, platform and the development of internal tools to bring the best experience to all of our customers.

Probably one of the most senior bunches of people in the company - on average, each one of our Engineers has over 7 years of experience!

We are looking for a Senior QA Engineer to join our team and help us deliver high-quality solutions. As part of a cross-functional team, you will be responsible for ensuring comprehensive manual and automated test coverage across our products. Your role will be critical in maintaining system reliability, performance, and seamless user experiences.

What you'll be doing:

• Partner with Product Managers and engineers early in discovery and development to identify risks, edge cases, and gaps before implementation
• Drive test strategy by defining methodologies, quality criteria, and risk-based coverage aligned with User Stories and business goals
• Own end-to-end test planning, from scope definition to execution, ensuring consistent and reliable validation of features
• Drive test automation with a focus on business impact and cost-efficiency, ensuring balanced coverage across the test pyramid and repeatable patterns
• Proactively identify, prioritize, and communicate defects with clear, reproducible reports aligned with team standards
• Leverage data analysis (e.g., SQL) to investigate issues, validate assumptions, and support quality decisions
• Close the loop between production signals (crash analytics, non-fatals, user-impact metrics) and pre-release test design, contributing to incident postmortems
• Act as a quality advocate within Agile teams, influencing processes to improve speed, predictability, and outcomes
• Contribute to and elevate QA practices across the team, driving continuous improvement and knowledge sharing

Your Experience

Must have:

• 5+ years in software quality assurance
• Experience as a QA engineer working with backend technologies such as APIs, DBs (including SQL knowledge) and services
• Experience with mobile platforms and ecosystems, iOS and Android
• Experience in test automation
• Being proactive in gathering non-functional requirements within the team and other departments
• Excellent understanding of testing methodology in Agile product lifecycle
• Positive thinking, quality orientation, reliability, ability to organize, exceptional attention to details
• Good English level – both spoken and written

Nice to have:

• Cross-browser, including mobile browsers and especially Facebook browser, testing with focus on page loading speed (First contentful paint, First Input Delay, server response time)
• Experience in load testing
• Understanding of A/B experimentation and its implication on testing strategy

Inbank is a financial technology company with an EU banking license that connects merchants, consumers, and financial institutions on its next-generation embedded finance platform. Our financing solutions are embedded seamlessly into the shopping journey of 6,000+ retailers. This helps our merchant partners grow their businesses, while end customers benefit from a frictionless shopping experience wherever they are. With a focus on innovation and growth, we are looking for talented people to join our team of 440+ working across our offices in Estonia, Latvia, Lithuania, Poland, and the Czech Republic.

Due to our ambitious growth plans, we are looking for a Workplace Services Engineer to join our team in Vilnius.

In this role, you will own and continuously improve the workplace technology environment that enables our employees to work securely and efficiently across multiple locations. You will manage day-to-day workplace IT operations, support end-user devices, maintain office infrastructure, and administer collaboration and identity systems.

Beyond operational support, you will help evolve our workplace services by introducing automation, improving device management, and implementing scalable solutions such as zero-touch onboarding and offboarding. Working closely with cross-functional teams and external vendors, you will play a key role in enhancing the employee technology experience and ensuring our workplace systems scale with the company’s growth across markets.

This role requires occasional travel to our offices in Kaunas, Riga, Gdansk, and the Czech Republic.

Ideally, you have:

• 3+ years of experience in IT support, workplace engineering, or systems administration.
• Strong expertise managing Windows and macOS environments.
• Hands-on experience with office networking, VPNs, firewalls, and printers.
• Experience setting up and supporting meeting room and collaboration technologies such as Cisco Webex, Google Meet, or similar platforms.
• Familiarity with MDM solutions such as JumpCloud or similar device management tools.
• Practical experience with Google Workspace, Microsoft 365, Slack, and Atlassian tools (Jira, Confluence, ServiceDesk).
• Experience with Identity and Access Management (IAM), including SSO, SAML, OAuth, SWA, LDAP, and API integrations.
• Experience with vendor management, license management, and procurement of IT equipment and services.
• Experience implementing or supporting zero-touch IT processes, including automated onboarding and offboarding.
• Familiarity with automation, scripting, or AI tools to streamline IT operations (Python is a strong advantage), or workflow automation platforms such as Zapier.
• Strong problem-solving and communication skills in Lithuanian and English.

Soft skills:

• Proactive mindset: Take ownership of improvements and actively identify opportunities to enhance systems, processes, and the employee technology experience.
• Automation focus: Continuously look for ways to streamline workflows and improve efficiency through automation.
• Customer-centric approach: Prioritize employee needs and deliver responsive, high-quality IT support.
• Mission-oriented: Align IT initiatives with company goals and support business outcomes through effective use of technology.
• Engineering mindset: Approach challenges systematically with a focus on scalable, long-term solutions—considering incident management, disaster recovery (DR), risk management, and future growth, not just immediate fixes.

If this role excites you, but you don’t meet every single requirement, we still encourage you to apply. We value diverse backgrounds and perspectives and believe that great people grow into great roles.

Why you’ll enjoy working here?

• Competitive salary aligned with your experience and expertise, ranging from €3,100 to €4,500 gross per month.
• Wellbeing support, including sports compensation or additional health insurance.
• Extra vacation days starting from your third year with us.
• 6-week paid sabbatical after four years at Inbank for employees with strong performance.
• A challenging and inspiring environment where you can grow professionally and take ownership of your work.
• International collaboration with talented colleagues across multiple markets.
• Dedicated learning and development budget to support your professional growth and help you stay ahead.
• Fun and connection through company-wide and team events that bring people together.
• A modern, pet-friendly office in Vilnius, designed for comfort, collaboration, and productivity.

Sounds like a fit?

Apply and our recruitment team will be in touch. If you’re unsure but curious, apply anyway — we’re happy to explore together.

Mission

Speechify is the easiest way to listen to the world’s information. Articles on the web, documents in the cloud, books on your phone. We absorb it all and let you listen to it at your desk, on the go, at your own speed, and with tools that make learning easier, deeper, and faster.

What streaming services have done for audio entertainment, we’re doing for audio information. And whatever we’re doing seems to be working. We’re #1 in our category, and experiencing exponential growth.

Overview

We're looking for a Senior Software Engineer to join our Core Experiences Team. This team builds and maintains the foundational services and SDKs that power Speechify’s product experience across platforms. It's a critical role for someone who enjoys working at the intersection of product and infrastructure, thinks strategically, and is passionate about designing clear, reliable APIs and simple systems that directly enhance the user experience.

What You’ll Do

• Collaborate with Speechify’s Product Teams to scope projects, find ways to reduce scope to get faster feedback from customers, navigate the integration/UX tradeoffs relevant to different product teams, and deliver solutions via our cross-platform SDK
• Optimize existing functionality to ship things like faster loading and more intelligent parsing by designing more efficient abstractions and improving our algorithms
• Ship cloud functions, lightweight backend services, and jobs using Kotlin

An Ideal Candidate Should Have

• Systems thinking. You know that optimizing a system requires end-to-end design, and you believe simplicity is valuable.
• Speed. You work quickly to generate ideas and options and know how to decide which things can ship now and what things need time
• Focus. We’re a high-growth startup with a busy, remote team. You know how and when to engage or be heads down
• Collaboration. You know how to inspire, play, and negotiate with opinionated designers, marketers, and PMs
• Preferred Tech Stack:
  • Kotlin Multiplatform (Java experience is OK but role is Kotlin Multiplatform) 
  • Prior experience with GCP is a plus

What We Offer

• A fast-growing environment where you can help shape the company and product.
• An entrepreneurial-minded team that supports risk, intuition, and hustle.
• A hands-off management approach so you can focus and do your best work.
• An opportunity to make a big impact in a transformative industry.
• Competitive salaries, a friendly and laid-back atmosphere, and a commitment to building a great asynchronous culture.
• Opportunity to work on a life-changing product that millions of people use.
• Build products that directly impact and support people with learning differences like dyslexia, ADD, low vision, concussions, autism, and more.
• Work in one of the fastest growing sectors of tech, the intersection of artificial intelligence and audio.

Think you’re a good fit for this job? 

Tell us more about yourself and why you're interested in the role when you apply.
And don’t forget to include links to your portfolio and LinkedIn.

Not looking but know someone who would make a great fit? 

Refer them! 

Speechify is committed to a diverse and inclusive workplace. 

Speechify does not discriminate on the basis of race, national origin, gender, gender identity, sexual orientation, protected veteran status, disability, age, or other legally protected status.

Required:

• 3+ in Windows desktop application development using Windows App SDK, WinUI (or similar), C#, XAML — and ideally additional experience with native Windows code (C++, Win32/WinRT/COM).
• Deep understanding of Windows application architecture, including interop between managed code (.NET) and native code.
• Proven track record of designing, building, and shipping production-quality desktop applications, with an emphasis on reliability, performance, scalability, and maintainability.
• Strong experience with accessibility APIs on Windows (e.g. Microsoft UI Automation or similar), and a dedication to building accessible and inclusive software.
• Excellent software engineering fundamentals: OOP, design patterns, data structures, algorithms, memory management, multi-threading or asynchronous programming (where relevant).
• Experience leading technical design, mentoring other engineers, conducting code reviews, and making architecture-level decisions.
• Strong communication skills; ability to articulate tradeoffs, collaborate with cross-functional teams, and drive consensus.
• A user-centric mindset: focus on building polished, intuitive, and accessible experiences for end users.

Preferred / Bonus:

• Experience with writing automated tests for UI — unit tests, integration tests, UI automation tests; familiarity with relevant testing frameworks.
• Experience with performance optimization for desktop apps (memory usage, startup time, rendering performance, high-DPI support, responsiveness under load).
• Experience with localization/globalization, right-to-left UI support, internationalization, accessibility for multiple regions.
• Familiarity with telemetry, analytics, crash reporting, logging, and error monitoring in desktop applications.
• Previous experience in shaping CI/CD workflows, release pipelines, and deployment strategies for desktop applications.
• Demonstrated ability to take ownership of feature areas or modules and drive them long-term, including maintenance, refactoring, and technical debt management.

What we offer

• A high-impact role: you will define architecture, shape the future of our Windows product, and directly influence what millions of users see and experience.
• A collaborative, flat-structure engineering culture — you are not just a coder, but a builder and a decision-maker.
• Opportunities to lead — mentor others, steer technical direction, and grow into broader technical leadership (e.g. Tech Lead, Architect).
• Flexibility, autonomy, and responsibility: you define how to solve problems, own features end-to-end, and contribute to long-term product vision.
• A purpose-driven mission: building software that’s reliable, accessible, and user-centered — making a real difference for people.                  

Think you’re a good fit for this job? 

Tell us more about yourself and why you're interested in the role when you apply.
And don’t forget to include links to your portfolio and LinkedIn.

Not looking but know someone who would make a great fit? 
Refer them! 

Speechify is committed to a diverse and inclusive workplace. 
Speechify does not discriminate on the basis of race, national origin, gender, gender identity, sexual orientation, protected veteran status, disability, age, or other legally protected status.