Senior Software Development Engineer in Test (SDET)

Svitla Systems Inc. is looking for a Senior Software Development Engineer in Test (SDET) for a full-time position (40 hours per week) in Europe. Our client is a leading provider of video analysis solutions for loss prevention and security.

You will join the client’s Device Management team. This is an engineering role first: you will design and build test automation frameworks, tooling, and infrastructure that let the whole team ship confidently at speed, writing production-quality code against Rust/Node.js APIs, a React front end, and AWS serverless infrastructure. You will work as a peer to developers, with significant latitude to shape how the team approaches testing, from framework design and CI/CD integration to simulating thousands of IoT devices and video streams in a repeatable, automated way.

Requirements

• 5+ years of experience in software testing with strong hands-on coding ability (this is a build-things role, not primarily a manual-execution role).

• Strong programming skills in Python, plus working proficiency in TypeScript/JavaScript and/or Rust, sufficient to build and maintain real test infrastructure and tooling.

• Demonstrated experience designing and building test automation frameworks from the ground up (API, UI, or integration layers), not just using existing ones.

• Comfort working in Linux environments.

• Solid understanding of AWS services (Lambda, DynamoDB, SQS, Kinesis, or similar) and how they underpin distributed, serverless SaaS applications.

• Experience integrating automated tests into CI/CD pipelines and treating test infrastructure as a first-class engineering deliverable.

• Ability to read and reason about production code, participate meaningfully in code reviews, and collaborate with developers as a technical peer.

• Systems thinking, including the ability to reason about distributed, event-driven, and resilience-focused architectures.

• Excellent communication skills, with the confidence to give direct, technically substantiated feedback to developers and stakeholders.

• Bachelor’s degree in Computer Science or a related field, or equivalent practical or engineering experience.

Will be a plus

• Experience with Infrastructure as Code tools (CDK, Terraform, Serverless Framework) for provisioning test environments.

• Experience with IoT device communication protocols and building device simulators for test purposes.

• Experience with video development, video streaming technologies, or testing video pipelines.

• Familiarity with production monitoring and observability tooling (e.g., Datadog, Grafana, CloudWatch).

• Experience with Snowflake, Elasticsearch, or other cloud-native data platforms.

• Contributions to open-source testing and automation tools, or strong personal projects demonstrating framework design skills.

• Prior experience in a fast-growing SaaS environment.

• Interest in eventually contributing to product code, or a background that blends SDET and full-stack development work.

Responsibilities

Automation framework and tooling development

• Design, build, and maintain automated test frameworks and libraries spanning REST APIs, UI (React), security, and end-to-end and integration layers.

• Write production-quality code for test harnesses, device simulators, performance tools, and mocks that emulate IoT device behavior and video streams at scale.

• Build and maintain tooling that improves testability across the stack, including for distributed, event-driven components (Lambda, DynamoDB, SQS, Kinesis).

• Integrate automated test suites into CI/CD pipelines, optimizing for fast, reliable feedback on every build and deployment.

• Evaluate and introduce new tools, frameworks, and approaches to keep test infrastructure scalable as the platform and team grow.

Engineering collaboration and architecture

• Participate as a technical peer in design sessions, RFCs, and architecture discussions, advocating for testability, observability, and reliability from the start.

• Review code and pull requests with an eye toward correctness, edge cases, performance, and long-term maintainability.

• Work closely with backend and frontend engineers to understand system design and build automation that reflects real production behavior.

• Contribute to system reliability by supporting monitoring, alerting, and troubleshooting efforts, including issues involving device connectivity.

Test strategy and coverage

• Design test plans and strategies for new and existing features, deciding where automation adds the most value versus targeted manual and exploratory testing.

• Drive test coverage for IoT device configuration, monitoring, deployment, and connectivity workflows, as well as video playback, recording, and streaming features.

• Validate distributed cloud systems for correctness, performance, and resilience under realistic and edge-case load.

• Own test estimation and planning as part of sprint and release cycles, working directly with engineering leads.

Quality leadership

• Act as a proactive voice for quality across the engineering organization, identifying systemic risks early and proposing engineering solutions (not just flagging bugs).

• Mentor other engineers and QA team members on automation practices, framework usage, and testable design.

• Provide direct, technically grounded feedback to developers and stakeholders when quality or architecture decisions are at risk.

We offer

• US and EU projects based on advanced technologies.

• Competitive compensation based on skills and experience.

• Regular performance appraisals to support your growth.

• Flexibility in workspace, either remote or our welcoming office.

• Bonuses for article writing, public talks, and other activities.

• Generous time off, including vacation, national holidays, sick leaves, and family days.

• Personalized learning programs tailored to your interests and skill development.

• Free tech webinars and meetups organized by Svitla.

• Regular corporate online activities.

• Awesome team and a friendly, supportive community!

Why join Svitla

Svitla Systems is a global digital solutions company headquartered in the U.S. and operating across the Americas, Europe, Asia, and APAC. Since 2003, we have served a wide range of clients - from innovative start-ups to Fortune 500 companies. Our success is built on partnership. By integrating seamlessly with clients' teams, we create lasting collaborations that drive real results. We are strong advocates of workplace flexibility, remote culture, individual approach to professional and personal growth.

Our global mission is to build a business that contributes to wellbeing of our partners, personnel, and their families, improves our communities, and makes a lasting difference in the world. Together, we are coding a brighter tomorrow - and living it.

Join us!