Principal Java Specialist

NPA WorldWide; Basingstoke; Hybrid; GBP 45,000 - 70,000; Full time

Job summary

A mission-led consultancy is seeking a Principal Software Engineer (Java) to lead development and architectural efforts for government clients in the UK. The role offers flexible working arrangements and a focus on shaping engineering practices while actively contributing to projects. A strong background in Java and proven experience in team leadership is essential. This position also includes a competitive salary and various employee benefits.

Benefits

Flexible working hours

Learning & development budget

Private healthcare

Matched pension scheme

Monthly socials

Qualifications

• 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).

Responsibilities

• Lead the design, development, and testing of secure, scalable systems.
• Architect and maintain APIs, data pipelines, and cloud-native solutions.
• Drive adoption of DevOps practices.
• Guide and mentor engineers promoting best practices.
• Collaborate with stakeholders to shape technical direction.

Skills

Java

Full-stack engineering

System architecture

Cloud solutions

API design

DevOps tools

Stakeholder engagement

Communication skills

Job description

Job description :

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.

This is a senior-level opportunity for a hands-on engineer who enjoys leading by example , thrives in agile environments , and is passionate about shaping engineering best practice while still contributing to the codebase.

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 secure or classified environments
• Knowledge of ITSM or systems within the government / defence sector
• Experience balancing technical leadership with hands-on development

Whats in It for You

• 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 youre an experienced Principal Software Engineer with expertise in Java , and youre excited to help deliver solutions that truly matter, wed love to hear from you.

Qualifications :

• 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)

Why is This a Great Opportunity :

Flexitime 37.5 hrs / week structured your way + remote options

Learning budget for training, certifications, and conferences

Private healthcare and matched pension

Monthly socials and quarterly company meetups

Career growth in a fast-moving, meaningful sector

Salary Type: Annual Salary

Salary Min: £ 45000

Salary Max: £ 70000

Currency Type: GBP