Senior Java Fullstack Engineer

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Our client, a mission‑led consultancy, is looking for an experienced Principal Software Engineer (Java) to join their growing team. They deliver secure, modern software solutions to the UK Government and Defence sectors, enabling clients to build scalable systems and progressive web applications that drive real impact.

Key Responsibilities

• Lead the design, development, and testing of secure, scalable systems using Java with modern front‑end frameworks (e.g., React)
• Architect and maintain APIs, data pipelines, and cloud‑native solutions (AWS, Azure, private cloud)
• Drive adoption of DevOps practices CI/CD, containers, infrastructure‑as‑code
• Guide and mentor engineers, promoting best practice, clean coding, and agile delivery
• Collaborate with stakeholders and clients to shape technical direction and ensure robust, user‑focused solutions
• Contribute across the full software development lifecycle, from discovery to production support

Essential Skills & Experience

• Deep expertise in Java, with strong full‑stack engineering skills
• Proven experience leading teams or projects at a senior/principal level
• Strong knowledge of system architecture, cloud solutions, and API design
• Familiarity with DevOps tools and automation (CI/CD, containers, IaC)
• Track record of delivering secure, production‑grade systems in agile teams
• Excellent stakeholder engagement, influencing, and communication skills

Desirable

• Background in insecure or classified environments
• Knowledge of ITSM or systems within the government/defence sector
• Experience balancing technical leadership with hands‑on development

Benefits

• Flexible working 37.5 hrs/week with remote and hybrid options
• Learning & development budget for training, certifications, and conferences
• Private healthcare & matched pension scheme
• Monthly socials and quarterly company meetups
• Clear career progression into leadership roles in a high‑impact sector

Diversity & Inclusion

Our client is an equal opportunities employer and a Disability Confident organisation, committed to fostering a workplace where diverse perspectives are celebrated and everyone can thrive.

How to Apply

If you’re an experienced Principal Software Engineer with expertise in Java, and you’re excited to help deliver solutions that truly matter, we’d love to hear from you.

Salary

Annual Salary: £55,000 – £70,000

Seniority level

Mid‑Senior level

Employment type

Full‑time

Job function

Engineering and Information Technology

Industries

Staffing and Recruiting