Our partner is looking for a Staff Backend Software Engineer based in Spain. As a Staff Backend Software Engineer, you'll help build and evolve a mission-critical transaction platform that enables secure cryptocurrency transfers between financial institutions, fintechs, and exchanges worldwide. You'll tackle complex distributed systems challenges where data integrity, tenant isolation, reliability, and auditability are essential in a regulated environment. Working primarily with Go and PostgreSQL, you'll shape core architectural decisions, improve platform scalability, and ensure predictable performance as transaction volumes grow. In this remote-first, collaborative environment, you'll partner with product, compliance, and customer-facing teams while mentoring engineers and taking ownership of the systems you deliver. Build resilient systems that preserve data correctness, tenant isolation, and auditability, including when failures occur. Improve scalability as transaction volumes and the number of institutions per node increase, maintaining predictable latency and database performance. Integrate AI coding agents into daily development workflows and improve specifications, context, and review practices to ensure generated code is safe for production. Collaborate with product, compliance, and customer-facing teams to translate regulatory obligations and customer needs into reliable software. Typically 8+ years of backend engineering experience, with a track record of delivering complex technical projects end to end and helping other engineers grow. Strong Go experience, or substantial production experience with another statically typed backend language such as Java, Kotlin, Rust, or C#,



with the ability and motivation to start shipping Go code within the first few weeks. Deep PostgreSQL knowledge, including schema design, query planning, locking, transaction isolation levels, live database migrations, and multi-tenant data management. Practical cloud engineering experience with AWS or GCP, including IAM, networking, managed databases, queues, and storage. Ability to read and modify Terraform and troubleshoot production issues using traces and logs. Daily experience using AI coding agents such as Claude Code or Cursor, including writing specifications, providing context, decomposing tasks, critically reviewing generated code, and understanding where these tools can fail. Strong written communication skills, with the ability to explain technical decisions clearly and concisely in a remote environment that relies on documentation and asynchronous collaboration. Solid security fundamentals for handling sensitive data, including encryption in transit and at rest, key management, data minimization, and least-privilege access. Familiarity with any of the following is an advantage: applied cryptography, decentralized identity protocols such as DIDs, verifiable credentials and DIDComm, regulated finance, payments, compliance frameworks such as the Travel Rule, AML, ISO 20022, SOC 2 or ISO 27001 controls, crypto and blockchain concepts, Node.js, TypeScript, queue and workflow systems, or modern observability tooling. Blockchain experience is not required. Versátil remote work: Work remotely from anywhere. Home-office stipend: $1,000 to support your home-working setup, available for use within your first year of employment.

📌 Staff Backend Software Engineer (Ceuta)
🏢 Jobgether
📍 Ceuta