Senior Software Engineer Viseu

Senior Software Engineer
Viseu
Viseu, Viseu District, Portugal

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Responsibilities:

• Own system architecture for reliable, observable, and maintainable edge services (clear boundaries, contracts, and failure modes).
• Set engineering standards (design reviews/RFCs, coding guidelines, test strategies, CI quality gates) and act as a mentor and role model for junior engineers.
• Design clean interfaces with backend services (g
  RPC/REST, schemas, versioning, authentication, timeouts, retries, idempotency).
• Champion software quality: ensure testability, determinism, and reproducibility;
  
  drive unit, integration, and
  -
  - end test strategies with meaningful coverage.
• Drive performance & reliability through profiling, tracing, and
  - driven improvements (latency, throughput, error budgets).
• Collaborate
  - functionally with Backend, Dev
  Ops, QA, and Product teams to design and deliver robust, evolvable solutions in production.

Skills

• 10+ years of professional software engineering experience, preferably with 3+ years of
  - on Python in production.
• Strong grasp of software design principles (SOLID, modularity, cohesion/coupling, DDD-lite where helpful).
• Proven experience in software architecture for services: clean layering, clear contracts, configuration management, and observability (metrics/logs/traces).
• Testing excellence: building pragmatic test pyramids, using fixtures/mocks,
  - based tests where appropriate, and CI pipelines with quality gates.
• Expertise in backend communication: API design, schema/contract versioning, and resilience patterns (circuit breakers, retries, backoff).
• Strong Linux proficiency (process model, networking basics, filesystems, permissions) and comfort with CLI tooling.
• Excellent documentation & communication skills: clear design docs, ADRs/RFCs,
  - signal code reviews, mentoring by example.
• Fluency in English.

Nice to have:

• Familiarity with NVIDIA inference stacks (Jetson/RTX), Tensor
  RT, Deep
  Stream/GStreamer.
• Experience in low-level languages for
  - critical paths (C/C++ or Rust).
• Knowledge of hardware-in-the-loop test setups, camera/video ingest (V4L2/RTSP), and industrial protocols (MQTT, OPC-UA, Modbus).
• Understanding of device security (TPM, secure boot, encrypted storage) and safe rollout strategies (canary, A/B testing).

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- applied to 100s of
- paying roles.

Sign up now at https://app. Calyptus. Co/auth/candidate/sign-up and let the opportunities come to you.