About the Role:
We’re looking for a Backend Engineer to contribute to a next-generation security initiative. You’ll be part of a small, highly technical team working on novel approaches to secure systems - with a focus on cryptography, automation, and AI-powered analysis. You’ll work closely with senior engineers and contribute hands-on to the codebase across the stack. This role involves hands-on development, learning opportunities, and collaboration across engineering, product, and design.

Day to Day:

• Contribute to the design, development, and delivery of features across the product
• Write clean, maintainable code for back-end systems deployed in AWS or GCP
• Collaborate with AI and cryptography specialists
• Work with the product manager to understand requirements and help the team plan architecture, data flows, API specs, and testing strategies
• Follow established engineering practices and participate in team discussions around process and quality
• Participate in customer-driven development and iterate based on feedback
• Write automated tests for load, performance, and error handling

What you bring to the table:

• 3+ years of hands-on software engineering experience for backend development
• Excellent TypeScript and Node.js coding experience
• AWS experience in containers (EKS, ECS) and serverless systems
• Relational, key/value, and graph datastore experience with schema management
• API design, data modeling, secure service development, database systems
• Has a focus on quality code, error handling, and high availability
• A thoughtful, pragmatic approach to solving technical problems in a fast-paced environment
• At least upper-intermediate level of spoken and written English

Extra Credit:

• Versed in Python coding and environments
• Experience with GCP systems
• Experience with applied cryptography, especially key management, TLS, or post-quantum algorithms
• Familiarity with agent-based architectures or systems that scan and orchestrate actions across distributed environments
• Knowledge of AI/ML systems, particularly LLM integration or agent-style reasoning patterns
• Experience managing LLM agents to increase both speed and quality of code generation and tests
• Exposure to security tools, vulnerability detection platforms, or compliance automation
• Prior experience working on developer-facing or infrastructure-heavy products

About the Role:

We’re looking for an experienced QA Automation Engineer (Mobile/Android) to take the lead in ensuring our global security products meet the highest bars of reliability. In this role, you won’t just run tests; you’ll architect and scale automation solutions for our VPN portfolio (HotspotShield, Betternet) and our flagship antivirus (UltraAV). We are agile, work quickly, and focus on outcomes. We trust our team to build the best solution to help us scale for the future.

Day to Day:

• Architect and evolve our Android automation framework (Espresso/Kakao-Cup) to support a growing portfolio of security products.
• Design sophisticated testing strategies for VPN-specific challenges, including network-dependent flows and testing under unstable or switching connection states.
• Work closely with developers and other QAs to troubleshoot and resolve issues, offering detailed bug reports.
• Uphold QA best practices and contribute to driving the QA strategy.
• Continuously explore new testing tools and methodologies to enhance the QA process.

What you bring to the table:

• At least 3 years of experience in automating UI tests for Android apps written in Kotlin
• Strong hands-on expertise with Espresso and Kakao-Cup, with the ability to test screens built in both Jetpack Compose and classic XML.
• Experience with Robolectric and Mockito for test infrastructure and mocking dependencies.
• You’re comfortable building and maintaining pipelines in CircleCI and using Bash/sh scripting for automation and result processing.
• Experience sharding and parallelizing tests using Flank, and configuring device matrices within Firebase Test Lab or similar emulators.
• An understanding of the specific challenges of testing VPN apps, such as network-dependent flows and handling connection-state flakiness.
• At least upper-intermediate level of spoken and written English

It would be great if you also had:

• Experience maintaining UI test suites across multiple apps in both mono- and multi-repo setups.
• High level of comfort with ADB, log analysis, and a working understanding of the Android build process via Gradle (Kotlin DSL).
• Experience testing A/B frameworks, including covering feature-flagged flows and variant-dependent UI.
• Familiarity with testing Google Play Billing integrations (subscriptions, purchase flows, and edge cases).

Why Join Us?

• Professional Growth: Enhance your skills by collaborating closely with talented engineers and architects.
• Meaningful Impact: Help create software that protects millions of users from cybersecurity threats.
• Supportive Environment: Join a team dedicated to innovation, mentorship, and continuous learning.

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.

We’re looking for an enthusiastic Security Engineer Intern to join our team in Tallinn. 

In this hands-on role, you will work alongside engineers to strengthen the security of our systems and development practices, gaining practical experience across product development, operations, and internal processes. If you’re interested in software development, infrastructure, or cybersecurity and want to build real-world experience in a fintech environment with guidance from experienced colleagues, this role is for you.

What will you be doing?

• Assist with security checks and improvement initiatives across applications, systems, and internal processes.
• Support secure development practices by reviewing findings, documenting risks, and following up on fixes.
• Contribute to access management, monitoring, and other operational security tasks.
• Collaborate with engineers to understand system architecture and identify security improvement opportunities.
• Participate in team planning and collaborate with both technical and non-technical stakeholders.

 Ideally, you:

• Have a basic understanding of programming, scripting, or software development concepts.
• Are familiar with Git, APIs, Linux/command line, cloud environments, or microservices architecture (considered an advantage).
• Have a strong interest in application and infrastructure security.
• Demonstrate curiosity and a willingness to learn new technologies and explore how systems work.
• Show a proactive, problem-solving mindset with a desire to continuously develop your skills.
• Have strong written and verbal communication skills in English.

What you’ll get in return?

• An opportunity to learn from a diverse group of people who excel at what they do.
• A paid internship from June to August.
• A personal mentor — an experienced professional you can always reach out to.
• Opportunities to expand your professional network and take part in events for our interns.

This is an excellent opportunity to gain real-world experience, work on impactful initiatives, and grow professionally. Ready to kick-start your career? Apply now!

When submitting your application, please ensure your CV is in English.

The Ideal Candidate

The Lead Software Engineer: Cloud Modernisation will play a key role in advancing Entersekt’s transition toward cloud-ready and cloud-native architectures across the company’s SaaS product suite. This role combines senior technical leadership with hands-on engineering delivery.

You are an experienced engineer who is comfortable working directly within complex production codebases while also shaping architectural direction and modernisation strategy. You bring a pragmatic mindset when working with legacy systems and understand how to balance performance, cost efficiency, operational reliability, and delivery timelines when introducing cloud-native patterns.

The successful candidate will guide the modernisation of existing systems by introducing scalable architecture patterns, automation, and operational improvements while partnering closely with product engineering, platform engineering, DevOps, security, compliance, and product management teams.

Initial focus for this role will be the modernisation of Entersekt’s 3DS product suite, with patterns, architectural approaches, and enablement efforts expected to scale across the broader SaaS platform over time.

The Role

This is a senior individual contributor role operating at Lead Engineer level. The role combines architectural leadership with hands-on engineering execution and is responsible for defining and delivering the modernisation roadmap for key product systems.

The Lead Software Engineer will assess previous generation (heritage) components, design target-state architecture, and implement modernisation improvements directly in product codebases. The role will introduce modern engineering practices and cloud-native patterns while establishing guardrails, reference implementations, and repeatable approaches that product teams can adopt.

The position plays an important role in enabling a scalable SaaS operating model by improving automation, observability, deployment consistency, and tenant lifecycle management. Through close collaboration with engineering and platform teams, the role will help accelerate cloud-native delivery while maintaining strong operational, security, and regulatory standards.

Responsibilities

Modernisation Strategy, Roadmap and Architecture

• Define modernisation roadmaps for product applications, including target-state architecture for services, infrastructure, and data flows.
• Assess legacy components to identify modernisation opportunities, technical debt, and pragmatic remediation paths.
• Determine appropriate modernisation approaches including refactoring, re-platforming, or re-architecting based on performance, cost, risk, and delivery considerations.
• Contribute architectural insight to the modernisation business case and support financial modelling related to infrastructure and platform decisions.

Engineering Delivery

• Implement modernisation changes directly within product codebases, including refactoring legacy components and decomposing monolithic architectures.
• Introduce cloud-native engineering patterns such as microservices, event-driven architecture, containerisation, and serverless services.
• Identify and implement performance, scalability, and reliability improvements using observability platforms, cloud metrics, and logging tools.
• Develop reference implementations and engineering patterns that enable teams to accelerate modernisation across products.
• Drive code-level implementation decisions and ensure successful delivery of modernisation outcomes across multiple engineering teams.

SaaS Platform and Operational Modernisation

• Improve the operational and platform capabilities that support Entersekt’s SaaS delivery model.
• Reduce reliance on manual operational processes and bespoke scripts by introducing automation across tenant lifecycle management.
• Design and implement repeatable processes for tenant provisioning, configuration, and environment management.
• Improve onboarding speed for new tenants through standardised workflows and environment templates.
• Establish tenant-aware observability by improving consistency of logs, metrics, traces, dashboards, and alerting across services.
• Contribute to multi-tenant architecture design, including tenant isolation and service tiering considerations.
• Improve deployment consistency through repeatable deployment patterns, automation, and safer release processes.

Engineering Standards and Governance

• Introduce practical engineering guardrails that support modern development practices including API-first design, event streaming, cloud-native storage, and container orchestration.
• Define and maintain architectural standards, patterns, and best practices for cloud-native development.
• Contribute to cloud governance initiatives and participate in architecture reviews that guide engineering teams through modernisation efforts.

Cross-Functional Collaboration

• Lead technical workshops, architecture discussions, and design reviews across product teams.
• Support engineering teams in translating modernisation objectives into practical implementation changes.
• Partner closely with DevOps, Platform Engineering, Cybersecurity, Compliance, and Product teams to ensure modernisation initiatives align with operational and regulatory requirements.
• Build trust with engineering teams by introducing modern practices through collaborative design and working reference implementations.

Team Development

• As the modernisation programme evolves, contribute to shaping a small, specialised engineering capability that supports broader platform modernisation initiatives.
• Maintain a strong hands-on focus while helping teams adopt new patterns and technologies.

Success Measures (First 12 Months)

Success in this role will be measured by the ability to deliver meaningful modernisation outcomes across Entersekt’s SaaS platform while establishing scalable engineering patterns that enable teams to accelerate cloud-native delivery.

Key outcomes in the first 12 months may include:

• Completing a comprehensive architectural assessment of the 3DS product suite, identifying key modernisation opportunities, technical constraints, and priority areas for improvement.
• Delivering a modernisation roadmap and migration plan that clearly defines architectural direction, sequencing, and the associated performance, operational, and cost considerations.
• Successfully modernising at least one product or major product component, resulting in measurable improvements in system operability, maintainability, and performance.
• Reducing reliance on manual operational processes and bespoke scripts through the introduction of automated tenant lifecycle management and environment provisioning.
• Improving observability and operational readiness by introducing consistent logging, metrics, dashboards, and alerting across services and tenants.
• Contributing architectural insights and cost considerations to the modernisation business case, supporting decision-making around infrastructure and platform investments.
• Establishing trusted working relationships with product and platform engineering teams by delivering working modernisation patterns and reference implementations that teams can adopt.
• Contributing to the development of a long-term platform architecture roadmap that supports modernisation across multiple products within the Entersekt SaaS ecosystem.

Skills and Experience

Successful candidates for this role will generally possess the following qualifications and skills:

• Demonstrated experience designing and delivering application modernisation programmes within AWS environments.
• Experience modernising applications through refactoring, re-platforming, or re-architecting legacy systems.
• Strong experience building and operating production systems using containers and orchestration platforms such as Kubernetes (or equivalent platforms).
• Solid backend engineering experience with the ability to diagnose and improve performance, scalability, and reliability in production systems.
• Experience working with Java-based systems or comparable backend development stacks.
• Proven experience implementing modern architectural patterns such as microservices, event-driven architectures, and distributed systems.
• Experience improving operational maturity through automation, observability, monitoring, and repeatable deployment processes.
• 8+ years of experience in cloud architecture, platform engineering, or senior software engineering roles responsible for production systems.
• Strong communication and collaboration skills with the ability to influence engineering, product, and platform teams.
• AWS certification is advantageous but not required.

Personality Attributes

• Strong bias toward delivery with a willingness to work hands-on in complex production systems.
• Pragmatic and comfortable working with legacy environments while introducing modern engineering approaches.
• Ability to influence teams through working solutions, reference implementations, and practical improvements.
• Systems thinker who balances architecture decisions with operational reliability, cost management, and security.
• Collaborative team player who builds trust across engineering teams through clear communication and inclusive technical leadership.
• Maintains accountability for delivering measurable outcomes while enabling teams to adopt modern engineering practices.

 
Product Security Analyst supports our product security goals by investigating security issues, assessing their business impact, and strengthening security controls across the product ecosystem. The role focuses on generating actionable security intelligence, improving detection and logging quality, supporting incident response, and collaborating closely with product teams to enhance overall security posture and protect end-users.

 
 
    With over 200 million users in 50+ countries, Bolt is one of the fastest-growing tech companies in Europe and Africa. And it's all thanks to our people.

    We believe in creating an inclusive environment where everyone is welcome, regardless of race, colour, religion, gender identity, sexual orientation, national origin, age, or ability.

    Our ultimate goal is to make cities for people, not cars. And we need your help on this mission!
 

 
 
The analyst will contribute to enhancing the security posture of our product platform by analysing user events to produce security metrics on the impact and extent of the abuse of security gaps. The role involves investigating known misuse cases and using data analysis methods to quantify their scale and impact. In addition, the analyst will support the rest of the product security team during incident mitigation and investigation, as well as subsequent analysis to improve visibility and support security automation efforts. 

 
 

• Investigate reported security issues and analyse their scale, severity, and impact on end-users.
• Analyse user event data to identify abuse patterns and produce security metrics.
• Support security incident investigations and mitigation activities across the product ecosystem.
• Contribute to detection engineering by automating recurring investigation patterns into repeatable workflows.
• Identify data quality gaps and improve security logging and visibility.
• Assess the business impact of security issues and communicate findings to product teams and key stakeholders.

 
 

• Proven track record in cybersecurity or a data-intensive analytical role. You're not expected to follow a playbook; you're expected to help us write it.
• You are comfortable moving beyond standard security dashboards. You can query DB tables, navigate Databricks, and leverage Python (NumPy/Pandas) or SQL to uncover patterns that others miss.
• Strong ability to assess complex threats, identify root causes, and highlight the most valuable security improvements across the domain.
• You can write Jupyter notebooks and scripts to transform raw logs into actionable security insights and automated workflows.
• You bring practical experience in log analysis and mitigation strategies. Bonus points for experience in a fast-paced SOC or IR team.
• A degree in Cybersecurity, Computer Science, or Mathematics will help you stand out.

 
    Experience is great, but what we really look for is drive, intelligence, and integrity. So even if you don't tick every box, please consider applying!
 

 
 

• Play a direct role in shaping the future of mobility.
• Work in fast-moving autonomous teams with some of the smartest people in the world.
• Accelerate your professional growth with unique career opportunities.
• Get a rewarding salary and stock option package that lets you focus on doing your best work.
• Enjoy the flexibility of working in a hybrid mode with a minimum of 3 days in the office each week to foster strong connections and teamwork.
• Take care of your physical and mental health with our wellness perks.

  *Some perks may differ depending on your location and role.