Senior Go Backend Engineer

Block Labs is seeking a Go backend engineer to build distributed, transactional backend services across crypto, fintech, and real-money gaming. You will own architectural decisions and be responsible for production behaviour in a high-velocity environment. The role focuses on writing robust Go services, ensuring correctness, and operating the system with...

Upsun is seeking a Senior Software Engineer to design and build the backend services behind our billing stack, including invoices, taxes, usage reporting, and external integrations. You will own complex components end to end, driving reliability and security while collaborating with Finance, Product, and Support. This hands-on role requires Go expertise,...

Workato seeks a seasoned Go backend engineer to design and optimize distributed systems that power our runtime platform. You will tackle high-concurrency components, memory-sensitive paths, and performance-critical code, collaborating across teams to ensure reliability and scalability. This role emphasizes low-level engineering and robust concurrency...

Creative Fabrica in Barcelona seeks a Senior Backend Engineer (Go) to architect multimodal generation pipelines and design high-concurrency systems for AI workloads. You will build Go-based microservices, optimize distributed queues, and work with AWS, Kafka, SQS, and modern APIs to deliver fast, reliable creative tools to a global audience. You will...

Swiss Re is seeking a Senior Backend Engineer in Madrid to design, build and operate core services powering our enterprise IT ecosystem. You will lead backend development with Golang, implement RESTful APIs and CI/CD pipelines, and support AI-enabled PoCs in collaboration with product teams. You will work on the Federated API, CMDB integrations, and scalable...

Sinch is building the next generation of conversational AI infrastructure. As a Senior Software Engineer on the Context Storage team, you will design, build, and own the core data platform that captures, persists, and serves conversational context to AI agents across SMS, WhatsApp, and voice at scale. You will work on a zero-to-one platform from the ground...

Pixel Movement, a global gaming technology company, is building high-performance platforms powering real-money experiences across casino, live, and instant-play games. They’re expanding their backend team to scale a new Crash game engine with Go. Senior Backend Developer (Go) will own critical backend systems, drive performance and reliability, and...

Parser is seeking a seasoned Golang Backend Engineer to help build large-scale platforms and services. You will work with cross-functional teams, implement robust microservice patterns, and drive API-first development in a FinTech context. Join a fast-growing team of 340+ engineers across Europe with flexible, remote-friendly work options in Spain. Expect...

Is this you?Titan Operating System S.L. (Titan OS), the Barcelona-based technology, entertainment, and advertising company is looking for you! At TitanOS, we live by three core values: Make things happen - We take ownership, move fast, and deliver impact. No ego - We collaborate with respect and humility to reach shared goals. Show genuine passion - We love...