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Java Software Engineer - Multiple Roles (Junior to Senior) Want to work with one of Northern Ireland's fastest-growing tech companies? Looking for a team where your input genuinely shapes the architecture and direction of projects? How about working on greenfield builds using the latest Java and cloud technologies every day? The Role You'll be developing high-quality, scalable Java solutions as part of a small, talented engineering team. From day one, you'll be hands-on - writing clean, testable code, designing APIs, and contributing to technical decisions that make a real impact. This is a collaborative environment where engineers are trusted to deliver, experiment, and grow. What's In It For You? Negotiable salaries (depending on experience - typically £35k-£65k) * Hybrid working (2 days in office) * All certifications and training covered - continual learning is encouraged * A genuine focus on work-life balance * A tight-knit team of engineers who love what they do and push each other to be better Technical Skills Strong Java experience (2+ years) * Hands-on with Spring Boot and Microservices Architecture * Experience across 3 or more of the following: AWS services (EC2, RDS, S3, EKS, CloudFront, etc.) * Works well independently and as part of a close team Nice to have: Experience with CI/CD, Kafka, ELK stack, NoSQL, Spring Security, OAuth2, or front-end tech (React, React Native). About You You're the kind of developer who: * Loves solving complex problems and takes ownership of outcomes * Wants to work on impactful projects with modern tools and methods * Is passionate about learning and mentoring others * Isn't afraid to share ideas, challenge norms, and help shape best practices What's It Like to Work Here? The team has one of the best retention rates in Belfast - and for good reason. You'll have autonomy, trust, and the freedom to get things done your way. They're serious about technical excellence, but they don't take themselves too seriously - expect a collaborative culture, exciting projects, and a supportive environment where everyone's contribution matters. Colin has been recruiting within the NI Tech scene for 6 years, successfully helping countless IT professionals find their next move. If you'd like to chat about this role - or just want some advice on your next career step - get in touch. Skills: Java Spring AWS Benefits: Work From Home

Lead UI / React Data Visualisation Engineer Location: UK / HybridSalary: Competitive + Excellent BenefitsEmployer: Global Technology Organisation Are you a Lead-level UI Engineer with exceptional React and frontend architecture skills?Do you want to design and build visual experiences used by 50,000 global developers every day? This is a standout opportunity for a technically brilliant engineer to join a world-class product organisation. You'll work across multiple products, leading the creation of rich, intuitive data visualisation components - including a high-profile developer homepage central to the experience of tens of thousands of engineers. The RoleAs a Lead UI / React Data Visualisation Engineer, you'll: Take ownership of UI and frontend implementation across several product lines, with a strong focus on React and modern component architecture. Build interactive, high-performance data visualisation experiences using libraries such as D3.js, ECharts, or similar. Develop and evolve the UI for a developer homepage with 50,000+ active users, ensuring it is intuitive, responsive, and visually compelling. Set technical standards for UI engineering - component structure, state management, performance optimisation, accessibility, and design systems. Collaborate closely with UX designers, product managers, data engineers, and platform teams. Mentor and guide other engineers while remaining hands-on with coding, reviews, and architectural decisions. About YouYou will thrive in this role if you have: Expert-level React skills, including component architecture, hooks, state management, and performance tuning. Strong UI engineering experience - you care about usability, interaction design, and polished user experience. Deep technical capability in data visualisation libraries (D3.js highly valued). Proven success building responsive, scalable, and robust front-end solutions in complex environments. Experience working across multiple products or platforms simultaneously. An ability to transform complex datasets into intuitive, meaningful visual insights. Confidence to provide technical leadership and contribute to wider front-end strategy. What's on Offer A major impact role shaping a UI used by 50,000+ developers globally. The chance to lead architecture and decision-making across multiple products. A supportive, innovative environment with autonomy and room to experiment. Flexible hybrid working and excellent benefits. Clear growth and progression opportunities in a global engineering organisation. Ready to Lead?If you're a highly skilled React/UI engineer with a passion for visual storytelling, product quality, and technical excellence, this is a career-defining role. Hays Specialist Recruitment Limited acts as an employment agency for permanent recruitment and employment business for the supply of temporary workers. By applying for this job you accept the T&C's, Privacy Policy and Disclaimers which can be found at hays.co.uk TPBN1_UKTJ