Overview: Employee will join Test Automation development team to, under supervision and coordination, build and evolve an in-house platform that runs large-scale load and functional tests for real-time communication and VoIP systems. He (she) will own features end-to-end, work across the stack — from Java services down to C/C++ media components and Linux networking — and help scale tests that simulate thousands of concurrent users and calls. We expect strong fundamentals, and ability to learn fast several of our specialized tools and technologies that are developed in-house, and you will have room to grow into them on the job.
Responsibilities:
- Build and maintain Java components of the test-automation platform.
- Work with real-time media and VoIP flows: signaling, media transport, NAT traversal, and transport security.
- Build and debug C/C++ components on Linux when needed.
- Package and run the system with Docker and contain
- er orchestration.
- Diagnose complex issues across application code, protocols, containers, and networking.
- Contribute to CI/CD, code review, and technical documentation.
- Collaborate daily in English with a distributed, international team.
Requirements:
- Software development experience (1+ year or proved knowledge) with good Java (concurrency, multithreading, performance) knowledge.
- C/C++: able to read, build, and debug native code on Linux.
- Docker and containers; comfortable running multi-service systems.
- Linux: shell scripting, service management, troubleshooting.
- Networking fundamentals: TCP/UDP, TLS, sockets, NAT, and packet inspection. Real-time communications / VoIP concepts (media transport and NAT traversal), or a strong ability and appetite to ramp up quickly.
- Test automation and CI/CD pipelines knowledge.
- Solid OO design, clean code, and testing/debugging discipline.
- Fluent English.
Additional Skills (Advantageous):
- Python.
- Machine Learning / NLP —model fine-tuning, and inference (supports an ongoing data-privacy/log-anonymization initiative).
- Rust.
- WebRTC and VoIP protocols (SIP, RTP/SRTP, ICE/STUN/TURN).
- Observability and metrics/dashboards for performance analysis.
- Knowledge with load/performance testing at scale.
- Proficient in Cross-Functional Stakeholder Management: Ability to engage stakeholders.
- Database knowledge: Able to create, populate and manipulate data structures.
Enviar currículo para: https://form.cits.br/?filial=1&cod=ANAJ&sol=12617