Java Engineer

About Us

Solirius Reply, part of the Reply Group, is a technology consultancy and digital transformation partner that helps organisations solve complex challenges through strategy, design, engineering, and delivery.

Solirius Reply, part of the Reply Group, is a technology consultancy and digital transformation partner that helps organisations solve complex challenges through strategy, design, engineering, and delivery. We work closely with our clients to deliver secure, accessible, user‑focused services that evolve with their needs. By combining deep technical expertise with people‑centred design, we create solutions that deliver meaningful, lasting impact. Our consultants partner directly with client teams, embedding into organisations to understand their goals, challenges, and users.

This collaborative approach enables us to deliver tailored solutions that drive measurable outcomes across public and private sectors. Past and present clients include the Ministry of Justice, Department for Education, Ministry of Housing, Communities and Local Government, UEFA, International Olympic Committee, and Mercedes‑Benz. Our services span the full digital delivery lifecycle, including architecture, engineering, delivery management, user‑centred design, business analysis, data, Dev Ops, and AI.

We operate as a collaborative and inclusive organisation that empowers our people to take ownership, innovate, and develop their expertise. As an equal opportunities employer, we are committed to encouraging equality, diversity, and social mobility, while creating opportunities for our teams to work on meaningful projects that deliver lasting impact.

You are a motivated and adaptable professional with a strong analytical mindset and a passion for using technology to solve real‑world problems. You enjoy working in collaborative, agile teams and take pride in delivering high‑quality solutions that make a tangible impact. With strong communication skills and a consultative approach, you're comfortable engaging with clients, understanding their needs, and translating them into effective outcomes.

We are seeking an experienced Senior Java Engineer to join our engineering team and play a key role in designing, developing, and maintaining scalable, high‑performance applications. The ideal candidate will have strong expertise in Java‑based enterprise systems, cloud‑native development, and modern software engineering practices. Experience with Artificial Intelligence (AI) technologies and AI‑enabled applications is highly desirable.

• Design, develop, test, and maintain enterprise‑grade Java applications
• Assist with technical design discussions and contribute to architectural decisions
• Develop scalable microservices and RESTful APIs
• Collaborate with cross‑functional teams including Product, QA, Dev Ops, and Business stakeholders
• Review code, mentor engineers, and promote engineering best practices
• Optimise application performance, reliability, and security
• Participate in Agile ceremonies including sprint planning, stand‑ups, and retrospectives
• Troubleshoot production issues and implement sustainable solutions
• Contribute to CI/CD pipelines and cloud deployment strategies
• Evaluate and adopt emerging technologies that improve product capabilities and development efficiency

• Strong proficiency in Java (Java 12+ preferred)
• Experience with Spring Boot, Spring Framework, and microservices architecture
• Strong understanding of REST APIs, distributed systems, and event‑driven architectures
• Experience with relational databases such as Postgre
  
  SQL, MySQL, or Oracle
• Experience with cloud platforms such as AWS, Azure, or Google Cloud Platform
• Familiarity with containerisation technologies including Docker and Kubernetes
• Experience with CI/CD tools and automated testing frameworks
• Strong knowledge of software design patterns, data structures, and system design principles

• Experience building or integrating AI‑powered applications and services
• Familiarity with Large Language Models (LLMs), Generative AI, Retrieval‑Augmented Generation (RAG), AI agents, or machine learning workflows
• Experie…