Senior Java Developer

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OverviewOur 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, hands-on role for someone who leads by example, thrives in agile environments, and shapes engineering best practice while contributing to the codebase. 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
What’s 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 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. 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 Salary Type: Annual SalarySalary Min: £55,000Salary Max: £70,000Currency Type: GBP Location: Sheffield, England, United Kingdom #J-18808-Ljbffr
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Location:
Sheffield, England, United Kingdom
Job Type:
PartTime

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