Java Principal Software Engineer

NPA WorldWide; Birmingham; Hybrid; GBP 75,000 - 95,000; Full time

Job summary

A leading consulting firm in the UK is seeking a Principal Software Engineer (Java) to help deliver secure, modern software solutions for the Government and Defence sectors. This senior-level role requires hands-on engineering skills, experience leading teams, and a passion for shaping best practices in agile environments. You will lead development efforts, design scalable systems, and collaborate with stakeholders to create impactful solutions. The position offers flexible working and competitive compensation.

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.

Responsibilities

• Lead the design, development, and testing of scalable systems using Java.
• Architect and maintain APIs, data pipelines, and cloud-native solutions.
• Guide and mentor engineers, promoting best practice and agile delivery.

Skills

Java

Full-stack engineering

System architecture

Cloud solutions

API design

DevOps tools

Stakeholder engagement

Education

Degree in Computer Science or related field

Tools

CI/CD

Containers

Infrastructure as Code (IaC)

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
• and 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 would 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
• : £ 75000
• Salary Max
• : £ 95000
• Currency Type
• : GBP