Senior Go Engineer

We are looking for a Senior Go Engineer

🗣 Language Proficiency: Upper-Intermediate

🧾 Employment type: Full time

🌍 Candidate Location: Poland, other EU countries, Kazakhstan, Serbia, Armenia, Georgia

🕐 Working Time Zone: CET

🚀 Start: ASAP

🧭 Planned Work Duration: 3 months this year + 3 months next year

👥 Customer Description:

A global mobility and urban services platform enabling users to book rides and other services while negotiating fares directly with service providers.

⚙️ Project Phase: ongoing

🤝 Soft Skills:

• Ability to explain project architecture and the business problems addressed in depth.

• Ability to independently clarify ambiguous requirements, define metrics, address concurrency and edge cases, and articulate technical trade-offs.

💡 Hard Skills / Must Have:

• 5+ years of production backend engineering experience and complex product development.

• Strong Go expertise: concurrency, synchronization, context propagation, goroutine lifecycle management, and graceful shutdown.

• Experience with high-load distributed systems and microservice architecture.

• Strong SQL and data modelling: schema design, joins, indexes, query analysis, replication, partitioning, and sharding.

• Experience with MySQL or PostgreSQL and Redis caching strategies.

• Sync/async inter-service communication using gRPC and message brokers, including delivery guarantees and idempotency.

• Observability: metrics, logging, tracing, alerting, and Go profiling.

• Understanding of NFRs, SLA/SLO/SLI, Docker, Kubernetes, CI/CD, and cloud platforms.

• Maintainable, testable code; unit/integration testing; Git and code review workflows.

✨ Hard Skills / Nice to Have:

• Event-driven architecture experience with Kafka, NATS, or RabbitMQ.

• Infrastructure-as-code experience with Terraform or Pulumi.

• Performance profiling and optimisation of Go services.

• Familiarity with Figma, cross-platform collaboration, and AI-assisted development tools.

📌 Responsibilities and Tasks:

• Design, develop, and maintain scalable backend services and features.

• Drive technical research, architecture design, and implementation.

• Collaborate across teams, conduct reviews, and contribute to architectural discussions.

• Own service delivery, production monitoring, maintenance, and observability.

• Mentor engineers and participate in agile ceremonies.

🧪 Technology Stack: Go, Microservices, PostgreSQL/MySQL, Redis, gRPC, Docker, Kubernetes, AWS, CI/CD

📞 Interview stages:

• English check (15 minutes)

• internal technical interview (1-1,5 hour)

• client interview (1 hour)

• client interview – live coding

• client interview – cultural fit (45 minutes)

What we offer

• Model: B2B contract with Bonapolia - one contract, one monthly invoice

• Rate: negotiated per candidate seniority and client budget

• Payment: monthly invoice, paid on the same schedule the client pays us (usually 30 days)

• Contract written under your country's law

• We handle the client-side paperwork: MSA, NDA, invoicing

🏢 About Bonapolia

Bonapolia is a family-owned IT staff augmentation team based in Lisbon. We build engineering teams for product companies and IT consultancies across Europe and the US.

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📩 Ready to Join?
We look forward to receiving your application and welcoming you to our team!