About the Position

We are seeking a Senior Software Engineer (GO) to join our team. You will work on building and maintaining microservices in production.

Responsibilities

Design, build, and own features or components from concept to production.
Contribute high-quality, maintainable code and participate actively in code reviews.
Take part in architectural discussions, providing technical insight and guidance.
Collaborate closely with teammates, mentoring where needed and sharing knowledge.
Continuously improve our codebase, processes, and developer experience.

4+ years of commercial software development experience, including 2+ years with Go
Strong understanding of Go idioms, error handling, and performance tuning
Experience building and maintaining microservices in production
Solid SQL skills and hands-on experience with PostgreSQL (schema design, indexing, query optimization, transactions)
Experience with ClickHouse or similar OLAP/analytical databases (aggregations, high-volume writes/reads, partitioning)
Experience with message brokers; NATS (or comparable: Kafka, RabbitMQ) for async communication and event-driven flows
Ability to design reliable, scalable services under high load (throughput, latency, backpressure, idempotency)
Experience with gRPC APIs, service contracts, and inter-service communication
Familiarity with Docker and containerized deployments
Experience with Git, code review, and collaborative development

Direct experience with billing, payments, invoicing, or financial/statistical systems
High-load / high-availability production experience (metrics, profiling, capacity planning)
NATS JetStream, pub/sub patterns, event sourcing, or CQRS
Kubernetes
Observability: Prometheus, Grafana, OpenTelemetry, structured logging, distributed tracing
CI/CD pipelines (GitLab CI, Argo CD, etc.)
Redis or other caching layers
Protobuf, gRPC, API versioning practices
Experience with migrations, zero-downtime deployments, and backward-compatible schema changes
Experience in fintech or other data-heavy domains

Ownership - you take responsibility for features from design through production
Problem-solving - you debug complex issues in distributed systems calmly and systematically
Teamwork - you collaborate in code reviews, planning, and incident response
Attention to detail - especially important for billing (accuracy, consistency, edge cases)
Adaptability - you work effectively in a fast-moving, high-load environment

An exciting and challenging job in a fast-growing business group, the opportunity to be part of a multicultural team of top professionals in Development, Architecture, Management, Operations, Marketing, Legal, Finance, and more
Great working atmosphere with passionate experts and leaders, sharing a friendly culture and a success-driven mindset
Beautiful offices in Warsaw, Limassol, Yerevan; work remotely or on-site with comfort and enjoy the opportunity to build a network of connections with professionals day by day
Modern corporate equipment based on macOS or Windows and additional equipment are provided
Paid vacations, sick leave, personal events days, days off
Referral program: enjoy cooperation with your colleagues and get the bonus
Educational programs: regular internal training sessions, compensation for external education, attendance of specialized global conferences
Rewards program for mentoring and coaching colleagues
In-house Travel Service
Multiple internal activities: online platform for employees with quests, gamification, presents and news, RedCore clubs for movie / book / pets lovers, special office days dedicated to holidays
Company events, team buildings

[Company description if present]