Hybrid Senior Software Engineer – Backend, Golang

at Betfair Romania Development

• Job title: Senior Software Engineer – Backend, Golang
• Job type: Full Time
• Experience level: Senior
• Salary: Not specified
• Degree requirement: High School Diploma
• Tech skills: AWS, Azure, Cassandra, Cloud, Distributed Systems, Docker, Google Cloud Platform, Grafana, GRPC, Kafka, Kubernetes, Microservices, MongoDB, MySQL, NoSQL, Postgres, Prometheus, RabbitMQ, Redis, SQL, Go
• Location requirements: Hybrid, Cluj Napoca, Romania

About the role

• Senior Backend Engineer designing and maintaining backend systems for Betnacional. Collaborating in an agile team to drive technical solutions and ensure system performance.

Responsibilities

• 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.
• Apply deep technical knowledge to solve complex system and performance challenges.
• Leverage approved technologies, frameworks, and standards effectively.
• Work within architectural guidelines while constructively influencing and evolving them.
• Define service interfaces, API contracts, and data models.
• Contribute to the reliability, scalability, and resilience of backend platforms.
• Support platform health, maintenance, and continuous improvement initiatives.
• Drive adoption of tooling, frameworks, and engineering standards.
• Promote transparency around system behaviour, dependencies, and changes.
• Influence backend architecture, technical direction, and platform roadmap.
• Participate in backlog prioritisation with a focus on technical debt and platform evolution.
• Demonstrate commercial awareness when making architectural and technical decisions.
• Prepare and maintain technical documentation, solution designs, and architectural artefacts.
• Communicate complex technical concepts clearly to both technical and non-technical stakeholders.
• Collaborate closely with frontend engineers, DevOps, and architects to define end-to-end solutions.
• Represent backend solutions and trade-offs in architectural and technical forums.
• Evaluate and assess the success of technical changes post-release.
• Ensure systems are designed for observability, monitoring, alerting, and logging.
• Lead investigation and resolution of production issues and incidents.
• Communicate clearly with stakeholders during incidents and post-incident reviews.
• Take ownership of system-level issues through to resolution.
• Conduct root cause analysis and drive preventative improvements.
• Continuously learn, mentor others, and contribute to engineering capability uplift.

Requirements

• 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.

Benefits

• Hybrid & remote working options
• €1,000 per year for self-development
• Company share scheme
• 25 days of annual leave per year
• 20 days per year to work abroad
• 5 personal days/year
• Flexible benefits: travel, sports, hobbies
• Extended health, dental and travel insurances
• Customized well-being programmes
• Career growth sessions
• Thousands of online courses through Udemy
• A variety of engaging office events