About the role

Senior Backend Engineer responsible for backend systems and services at Betfair Romania Development. Contributing to architecture, system design, and delivery of critical services.

Responsibilities

As a Senior Backend Engineer within a cross-functional agile team, you will play a key role in shaping backend systems and services, contributing to architecture, system design, and engineering excellence.
You will own the delivery of critical backend services and infrastructure, making informed technical decisions that balance scalability, performance, security, and business outcomes.
You will contribute to technical direction, support best practices, and help elevate engineering capability across the team.
Own the delivery of backend product outcomes, operating effectively in complex and ambiguous problem spaces.
Drive technical solutions that support business goals, platform scalability, and long-term sustainability.
Contribute to Agile delivery through estimation, planning, feedback, and participation in ceremonies.
Make data-driven decisions with a bias toward action, quality, and measurable impact.
Ensure system reliability, performance, and customer impact are central to technical decisions.
Design, develop, test, and maintain high-quality backend services and APIs.
Deliver scalable, maintainable, and secure solutions aligned with engineering best practices.
Enhance, refactor, and troubleshoot existing systems and services.

6–8+ years of professional software development experience in large-scale or enterprise environments.
Proven experience designing, architecting, and scaling distributed systems and microservices.
Deep understanding of Go fundamentals, idiomatic design, testing, and error handling.
Strong expertise in concurrency patterns in Go (goroutines, channels, sync primitives).
Experience designing and building RESTful APIs and/or gRPC services.
Strong experience with relational databases (PostgreSQL, MySQL) and SQL optimisation.
Experience with NoSQL databases such as MongoDB, Redis, or Cassandra.
Deep understanding of event-driven architectures and messaging systems (Kafka, RabbitMQ, SNS/SQS).
Strong knowledge of containerisation and orchestration using Docker and Kubernetes.
Experience with cloud platforms (AWS, GCP, or Azure) and cloud-native architectures.
Solid understanding of security best practices (OAuth2, JWT, encryption, OWASP Top 10).
Experience establishing coding standards and architectural patterns across teams.
Strong focus on performance optimisation, caching strategies, and system tuning.
Expert understanding of CI/CD pipelines and DevOps practices.
Experience with monitoring and observability tools (Prometheus, Grafana, ELK).
Proven experience leading within Agile teams and mentoring engineers.