Java Engineer

About Us:

Solirius Reply, part of the Reply Group, delivers technical consultancy and application delivery to our clients in order to solve real world problems and allow our clients to respond to an ever-changing technical landscape. We partner closely with our clients, embedding our consultants into their businesses in order to provide a bespoke service, allowing us to truly understand our clients’ needs.

It is this close collaboration with our clients that has enabled us to grow rapidly in recent years and will drive our ambitious future growth plans. We currently have over 300 consultants working with a variety of key clients from both the public and private sectors such as the Ministry of Justice, Department for Education, FCDOS, UEFA, International Olympic Committee and Mercedes Benz; with plans to increase our client base further in the near future.

We operate as a flat organisation and believe in trusting and supporting our team to operate independently. We pride ourselves on being specialists at what we do, making the most of our consultants’ expertise in their fields in order to provide a best-in-class service to our clients. All our consultants have the opportunity to work on a range of different projects, providing a broad range of knowledge on which to develop their careers and progress in the direction they choose.

About You:

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. You understand and align with Solirius Reply Values.

The Role:

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.

Requirements Key Responsibilities:

• 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, DevOps, 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.

Key Skills/Experience:

You need to be technically sound but also be able to convey your knowledge and expertise to clients internally and externally. In terms of specific languages you should have commercial experience in some or all of the following;

• 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 PostgreSQL, 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.

Desirable Skills

• 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.
• Experience integrating AI APIs and platforms such as OpenAI, Anthropic, Azure AI, or similar technologies.
• Knowledge of vector databases, embeddings, prompt engineering, and AI application architecture.
• Experience with Python for AI/ML-related development.
• Exposure to MLOps practices and AI model deployment pipelines.
• Contributions to open-source projects or technical communities.

Benefits Package and Benefits:

• Competitive Salary
• Bonus Scheme
• Private Healthcare Insurance
• 25 Days Annual Leave + Bank Holidays
• Up to 10 days allocated for development training per year
• Enhanced Parental Leave
• Paid Fertility Leave (5 Days)
• Statutory & Contributory Pension
• EAP with Help@Hand
• Gym Membership Benefits
• Flexible Working
• Annual Away Days/Company Socials

Equality & Diversity:

Solirius Reply is an equal opportunities employer. We are committed to creating a work environment that supports, celebrates, encourages, and respects all individuals and in which all processes are based on merit, competence and business needs. We do not discriminate on the basis of race, religion, gender, sexuality, age, disability, ethnicity, marital status or any other protected characteristics.

Should you require further assistance or require any reasonable adjustments be put in place to better support your application process, please do not hesitate to raise this with us.