Senior Java Software Engineer

3 weeks ago

london, United Kingdom Ocho Full time

Principal Java Developer – Fully Remote The Opportunity Ocho is partnering with a fast-growing, product-led fintech that’s building out a brand-new Development Centre from the ground up to deliver an innovative Greenfield payments platform. As a Principal Java Developer, you’ll be hands-on in designing and developing backend, service, and portal systems that power secure, scalable payment processing. You’ll work with a modern stack, agile practices, and an engineering culture that values autonomy, technical excellence, and collaboration — without the red tape. Why Join? Be part of a team shaping a new product suite from concept to release. No legacy systems – you’ll work with modern tools, frameworks, and automation from day one. A culture that empowers engineers to focus on solving complex problems, not battling process. Continuous improvement built into the DNA – from BDD to CI/CD pipelines and beyond. Full ownership of your deliverables from design through deployment. Key Responsibilities Design, develop, and maintain backend systems focused on performance, scalability, and security. Understand client and partner needs, translating them into high-quality, innovative software solutions. Contribute to all stages of the SDLC – from requirements analysis to release and post-deployment verification. Collaborate across engineering teams to ensure deliverables are technically accurate, testable, and on time. Lead technical discussions around architecture, tooling, and process improvements. Support deployments to internal test environments and production data centres. Mentor and guide team members, promoting best practices in software delivery. Essential Experience 8+ years’ experience in backend engineering, ideally within a Fintech or high-availability environment. Expert-level Java / J2EE development, including design patterns, OO design, and refactoring. Proven experience delivering secure, scalable, high-quality services in production. Hands-on with JPA2, Hibernate, and MySQL 8 (InnoDB). Strong understanding of REST API design (JAX-RS, RESTEasy, OpenAPI, Swagger). Experience building fault-tolerant, multi-threaded systems and working with load balancing concepts. Familiarity with CI/CD, automation, and Behavioural Driven Development (BDD). Comfortable deploying applications on cloud infrastructure (AWS, GCP, or Azure). Excellent communication, analytical, and problem-solving skills. Desirable Skills Experience with Infinispan, JGroups, or clustered caching solutions. Exposure to NoSQL databases (e.g. BigQuery). Familiarity with Pub/Sub, WebSocket integrations, or Ansible automation. Working knowledge of HTML, JavaScript, or portal-layer integration. Background in secure payment systems (PCI-DSS compliance). What’s on Offer? Salary up to £100k + annual bonus Fully remote working (UK-based) Industry-leading benefits package A modern engineering environment with autonomy, trust, and cutting-edge technology To apply, connect with Neill Ferguson on LinkedIn or submit your CV via the link below.

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