Java Engineer with AI

Solirius Ltd.; Greater London; On-site; GBP 90,000 - 120,000; Full time

Benefits offered by this job

Competitive Salary

Private Healthcare Insurance

25 Days Annual Leave + Bank Holidays

Flexible Working

Job summary

Solirius Reply, part of the Reply Group, is a technology consultancy delivering strategy, design, engineering and delivery to public and private sector clients across the UK.

We seek a motivated backend engineer to design and evolve high-performance Java applications, integrate AI/ML models, and build scalable RESTful services within collaborative, agile teams. You will work with cloud platforms and data scientists to realise impactful solutions.

Qualifications

• Strong experience with Java 12+ and Spring Boot.
• Experience building microservices and RESTful APIs.
• Experience integrating AI/ML solutions into backend systems.
• Familiarity with SQL/NoSQL databases and cloud platforms (AWS/GCP/Azure).
• Knowledge of containerisation (Docker) and orchestration (Kubernetes).
• Experience with AI/ML frameworks (TensorFlow, PyTorch).
• Strong problem-solving and communication skills.

Responsibilities

• Design, develop, and maintain high-performance Java applications.
• Integrate AI/ML models into production-grade backend systems.
• Build RESTful APIs and microservices using modern Java frameworks.
• Collaborate with data scientists to deploy and scale ML solutions.
• Optimise system performance, scalability, and security.
• Implement CI/CD pipelines and ensure high code quality.

Skills

Java 12+

Spring Boot

REST APIs

AI/ML integration

Microservices

CI/CD

Tools

AWS

GCP

Azure

Docker

Kubernetes

TensorFlow

PyTorch

Job description

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.

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, DevOps, 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.

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.

Key Responsibilities

• Design, develop, and maintain high-performance Java-based applications
• Integrate AI/ML models into production-grade backend systems
• Build RESTful APIs and microservices using modern Java frameworks
• Collaborate with data scientists to deploy and scale machine learning solutions
• Optimise system performance, scalability, and security

• Implement CI/CD pipelines and ensure high code quality standards
• Work with cloud platforms to deploy AI-powered services
• Contribute to architecture decisions and technical roadmaps
• Design, develop, and maintain high-performance Java-based applications
• Integrate AI/ML models into production-grade backend systems
• Build RESTful APIs and microservices using modern Java frameworks
• Collaborate with data scientists to deploy and scale machine learning solutions
• Optimise system performance, scalability, and security
• Implement CI/CD pipelines and ensure high code quality standards

• Work with cloud platforms to deploy AI-powered services
• Contribute to architecture decisions and technical roadmaps

Required Qualifications

• Strong experience with Java 12+, Spring Boot, and microservices architecture
• Experience integrating AI/ML solutions into backend systems
• Understanding of REST APIs, distributed systems, and database design
• Familiarity with SQL and NoSQL databases
• Experience with cloud platforms (e.g., Amazon Web Services, Google Cloud Platform, or Microsoft Azure)
• Knowledge of containerisation technologies like Docker and orchestration tools such as Kubernetes
• Experience with AI/ML frameworks (e.g., TensorFlow, PyTorch, or Java-based ML libraries)
• Strong problem-solving and communication skills

Preferred Qualifications

• Experience with NLP, computer vision, or recommendation systems
• Familiarity with MLOps practices and model lifecycle management
• Knowledge of event-driven architectures (Kafka or similar)
• Experience with DevOps tooling and infrastructure as code
• Exposure to Generative AI and large language models

• 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
• Cycle to Work and Electric Vehicle schemes
• Flexible Working
• Annual Away Days/Company Socials

Diversity and Inclusion

As an equal opportunities employer, we are committed to creating a work environment that supports, celebrates, encourages and respects all individuals, where all processes are based on merit, competence and business needs.

Encouraging high social mobility is really important to us. We foster an inclusive culture by welcoming different perspectives, enabling equitable opportunities and promoting open dialogue. This commitment is reflected in initiatives such as our gender diversity group and our focus on mental health and wellbeing. Whatever stage you are at, you will find an environment where you can thrive.

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

As a Disability Confident employer, we are committed to ensuring our recruitment process is accessible and inclusive, enabling all candidates to demonstrate their skills, experience and potential.