We're looking for a Senior SDET (Software Development Engineer in Test) with strong Go expertise to significantly scale our test automation coverage and build out our tooling infrastructure.

Requirements

3+ years of hands-on Go experience, writing clean, maintainable, idiomatic code.
Strong understanding of Go concurrency, including building with goroutines, channels, and synchronization primitives, as well as reasoning about race conditions, deadlocks, and graceful shutdowns.
Solid grasp of modern Go idioms, including context.Context, generics, proper error handling, and structured logging.
Experience with gRPC, particularly streaming RPCs.
Solid understanding of networking fundamentals, including TCP, UDP, HTTP/2, and TLS.
Strong testing expertise, including table-driven tests, the race detector, fuzzing, and deterministic testing of concurrent code (testing/synctest).
Performance-oriented mindset. A key goal of the test suite is to serve as a load generator capable of driving a large number of concurrent streams from a single instance, so the ability to write efficient, low-overhead Go code that performs reliably under heavy load is essential.
Hands-on experience with profiling and performance tuning using pprof, benchmarks, and the execution tracer—not just familiarity with the concepts.
Familiarity with Prometheus metrics and instrumentation.
Hands-on experience using AI tools in day-to-day software development.

Nice to Have

Experience designing and maintaining public SDKs or libraries, including Go modules, semantic versioning, and backward compatibility.
Experience with audio stream processing.
Familiarity with SIP and telephony systems.

Responsibilities

Develop and maintain end-to-end automated tests using the existing Go-based framework
Extend and improve the internal test automation framework
Automate load testing and validation pipelines
Contribute to and maintain the Go SDK (the library other teams and customers build against) and test suite built on top of that SDK - including load test scripts, healthchecks, etc
In the longer term - provide automation tooling (e2e tests framework too) that can be used directly by backend developers, managers, QA, etc
Ultimately automate everything related to testing - turning manual and ad-hoc QA work (functional, load, healthchecks, etc) into automated, CI/CD-integrated coverage

What we offer

The team has built award-winning AI products for tech corporations — devices, voice assistants, products that are actually in the world
Cutting-edge tech stack: Speech Technologies, NLP, Generative AI (LLMs, diffusion models), voice-first agentic architecture with privacy-first and on-premises deployment
High engineering bar and real ownership — the team cares about what actually works in production, not what looks good in a demo, and you'll see the impact of your work directly
Fast career progression — a senior-heavy team and a high volume of real problems means you grow faster than you would anywhere else
Startup pace with enterprise stability — real clients, real revenue, no bureaucracy
Fully remote across Europe
21 vacation days + public holidays + 5 sick days
Private English lessons via Preply
Participation in Employee Stock Ownership Plan (ESOP)

SDET (Software Development Engineer in Test) jobs

Software Development Engineer in Test

Software Development Engineer in Test