Greetings We are Hiring Senior Golang Engineer / Backend Engineer London, UK Senior Golang Engineer / Backend Engineer Location United Kingdom (Hybrid) 2 days onsite per week Contract Role Overview We are seeking highly skilled Golang Engineers to join a fast-paced engineering team responsible for building and enhancing next-generation banking and payment platforms. The successful candidate will play a critical role in designing, developing, and operating scalable backend services supporting high-volume, mission-critical financial transactions. You will work within a modern cloud-native environment, building resilient microservices and event-driven systems that support secure, real-time transaction processing across a complex banking ecosystem. The role requires strong engineering fundamentals, deep Golang expertise, and experience operating distributed systems at scale. Working closely with Architects, Product Owners, SRE, DevOps, and Platform Engineering teams, you will contribute to the end-to-end software development lifecycle while ensuring solutions meet the highest standards of performance, security, resilience, and observability.
Key Responsibilities
- Software Engineering
- Design, develop, and maintain robust backend services using Golang.
- Build highly scalable APIs and microservices supporting banking and payment capabilities.
- Develop reusable libraries, frameworks, and engineering standards.
- Participate in system architecture and technical design discussions.
- Ensure code quality through automated testing, code reviews, and engineering best practices.
- Troubleshoot and resolve complex production issues.
- Event-Driven Architecture
- Design and implement event-driven solutions leveraging:
- Apache Kafka
- RabbitMQ
- Streaming architectures
- Asynchronous processing patterns
- Develop event producers and consumers supporting business-critical workflows.
- Ensure reliable event delivery, replay strategies, and idempotent processing.
- Cloud & Container Platforms
- Build and operate services running within Kubernetes environments.
- Develop and maintain Docker containers.
- Contribute to deployment automation and CI/CD pipelines.
- Collaborate with Platform and SRE teams on scalability, security, and operational excellence.
- Data Engineering & Persistence
- Design and optimise data models for both relational and NoSQL databases.
- Work with:
- PostgreSQL
- MongoDB
- BigQuery
- Redis (desirable)
- Ensure performance, resilience, and data integrity across services.
- Implement efficient querying, indexing, and transactional processing.
- Engineering Excellence
- Promote agile and DevSecOps practices.
- Support observability through:
- Logging
- Metrics
- Tracing
- Monitoring
- Participate in architecture reviews and engineering governance.
- Mentor junior engineers and contribute to engineering communities of practice.
Required Skills & Experience
- Core Development Skills
- Strong commercial experience developing backend applications using Golang .
- Solid understanding of:
- Goroutines
- Channels
- Concurrency patterns
- Memory management
- Performance optimisation
- Experience developing RESTful APIs and service-oriented architectures.
- Strong understanding of software engineering principles and design patterns.
- Microservices & Distributed Systems
- Proven experience designing and operating production-grade microservices.
- Experience building highly available distributed systems.
- Strong appreciation of scalability, reliability, and fault tolerance principles.
- Experience supporting mission-critical production services.
- Messaging & Event Processing
- Hands-on experience with:
- Apache Kafka
- RabbitMQ
- Event-driven architectures
- Message orchestration
- Stream processing
- Databases
- Experience working with:
- Relational
- PostgreSQL
- MySQL (desirable)
- NoSQL
- MongoDB
- Redis
- BigQuery
- Strong understanding of:
- Data modelling
- Query optimisation
- Transaction management
- Performance tuning
- Cloud & Containers
- Experience with:
- Docker
- Kubernetes
- Helm
- CI/CD pipelines
- Exposure to one or more cloud platforms:
- AWS
- Google Cloud Platform (GCP)
- Azure
- Operational Excellence
- Experience with:
- Monitoring and alerting
- Distributed tracing
- Production support
- Incident management
- Observability tooling
- Examples include:
- Prometheus
- Grafana
- ELK
- Splunk
- OpenTelemetry
Desirable Skills
- Previous experience within:
- Banking
- Payments
- FinTech
- Open Banking
- Financial Services
- Knowledge of payment processing concepts.
- Experience with ISO 20022 messaging.
- Understanding of regulatory and security requirements within financial institutions.
- Experience with Go frameworks such as:
- Gin
- Echo
- Fiber
- Experience using Terraform and Infrastructure as Code.
- Exposure to PHP-based legacy environments.
- Knowledge of Domain-Driven Design (DDD).
- Experience implementing API security standards including OAuth2 and JWT.