Senior Software Engineer (Backend-Golang)- Betnacional, Hybrid & Remote
Betfair Vezi toate joburile
- Cluj-Napoca, Cluj
- Permanent
- Full-time
Win together | Raise the bar | Got your back | Own it | Positive impactAbout BetnacionalFounded in 2021, Betnacional was among the first betting platforms to secure a definitive operating license in Brazil. Known for its speed, innovation, and strong connection with Brazilian players, Betnacional combines cutting-edge technology with a deep understanding of the national market. In 2025, Betnacional together with Betfair Brazil have established Flutter International’s fifth region: Flutter Brazil.Role OverviewAs 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.Key Accountabilities & ResponsibilitiesProduct & Delivery Ownership
- 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.
- This role includes participation in an on-call rotation, requiring availability to respond to and resolve production incidents when needed.
- Golang
- React, TypeScript
- Docker, Kubernetes
- CI/CD pipelines
- High school diploma or equivalent (Ensino médio completo required)
- Ongoing professional development and self-directed learning encouraged
- Excellent written and verbal communication skills in English; Portuguese is highly beneficial
- 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.
- Experience with gRPC and Protocol Buffers.
- Familiarity with infrastructure as code tools (Terraform, CloudFormation, Ansible).
- Experience with API gateways and service mesh technologies (Kong, Istio, Envoy).
- Knowledge of event sourcing and CQRS patterns.
- Familiarity with TypeScript and React for full-stack collaboration.
- Experience implementing GraphQL server solutions.
- Experience with chaos engineering and resilience testing.
- Contributions to open-source projects or internal frameworks.
- Experience designing multi-tenant systems.
- Knowledge of data pipelines, analytics, or machine learning integration.
- AI tools proficiency for code generation, refactoring, system reasoning, and testing.
- 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