Senior Java Software Engineer at envitia | Jobyssey

Join the Growth Story at Envitia

Envitia operates at the heart of the UK’s most sensitive and high-profile operations. Our approach is entirely mission-focused, enabling customers to see more, decide faster, and act with confidence across complex domains.

We deliver situational awareness and information advantage across C5ISR, fusing cyber, geospatial, and kinetic data into an operational picture. This transforms fragmented data into a shared understanding of the battlespace, delivering actionable insight when it matters most.

Our solutions are secure-by-design, built from the ground up to protect sensitive information and ensure resilience in contested environments. We simplify complex heterogeneous data sources into a rich picture of fused intelligence, providing a digital backbone that underpins success.

We operate as small teams delivering fast value, blending deep technical expertise with agile methods to deliver measurable outcomes. Every engagement focuses on capability, clarity, and confidence for those who protect the nation.

A career with Envitia enables you to work with mission driven innovation.

We’re thrilled to announce that Envitia has been named one of the Sunday Times Top 100 Medium-Sized Companies to Work For in 2025—a prestigious recognition that highlights our commitment to creating an outstanding workplace where innovation, collaboration, and personal growth thrive.

The Role

Envitia is looking for a Java Engineer to join our growing Security & Intelligence team.

The role is pivotal to the Engineering function and will be responsible for leading the design, development and implementation of complex software solutions for customers in the government and national security sectors.

This position requires an individual who can operate independently, drive projects to completion and deliver innovative solutions that align with project objectives and organisational goals. The Senior Software Engineer will provide technical leadership, mentor less experienced engineers and ensure the delivery of high-quality software that fulfils the expectations of customers.

This is an opportunity to work on technically challenging projects where you'll have direct influence over solution design, engineering decisions and the delivery of modern software systems.

Due to the nature of our work, the successful candidate will be required to obtain a high level of security clearance. Once cleared, you will be expected to work on-site at client locations in either London, Cheltenham, or Manchester for approximately 3-4 days per week. Whilst you clearance is going through, you will work on programmes across our wider defence and central government portfolio.

What You'll Be Doing

Lead the planning, design, and development of sophisticated software applications. Make critical decisions that define a framework for implementing projects and initiatives.
Design, write and test code, refining and rewriting it as necessary, supporting and collaborating with other developers involved in the project.
Oversee the delivery of projects from conception to deployment, ensuring they are completed on schedule, within budget, and meet or exceed quality standards.
Drive innovation by exploring new technologies and software development practices. Tackle complex problems and provide well-engineered solutions.
Establish and enforce quality assurance standards and best practices to ensure the development and delivery of reliable and scalable software.
Conduct code reviews and maintain high standards in programming to improve application functionality and prevent future issues.
Mentor and guide junior software engineers, promoting a culture of learning and growth within the team. Share knowledge and foster a collaborative team environment.
Collaborate with other departments, gathering and addressing technical and design requirements. Communicate effectively with stakeholders to provide updates and gather feedback on project progress. Capable of breaking down customer requirements into an actionable user experience design.

What We're Looking For

Highly proficient Java programmer, experience building RESTful microservices with Spring
User Interface development experience using Angular and knowledge of other JavaScript frameworks such as React, Vue.js and native js desirable
Adaptable, ability to pick up new technologies and learn quickly
Design, write and test code, refining and rewriting it as necessary, supporting and collaborating with other developers involved in the project
Capable of breaking down customer requirements into an actionable software design
Experienced with working with backend teams to define and utilise appropriate service APIs
DevOps, Docker and CI/CD pipelines
Experience of Azure / AWS technologies and cloud infrastructure
Agile development methodology and use of TDD and BDD

Why Join Envitia?

Work on meaningful projects supporting the UK's Security & Intelligence community
Collaborate with highly skilled engineers, consultants and architects
Influence technical direction and solution design
Access continuous learning and development opportunities
Be part of a team that values innovation, collaboration and technical excellence

Security Clearance Requirements

The successful candidate must be eligible to obtain a high level of security clearance. Due to the nature of the work, candidates must be a sole British National.

Location

The role will require the successful candidate to be onsite 3-4 days a week with a customer in either London, Cheltenham or Manchester 3-4 days a week once you obtain your clearance.

What’s in it for you?

At Envitia, our greatest asset is our team. We are committed to ensuring our workplace is one where every employee feels valued, supported and motivated to reach their full potential. As part of this commitment, we offer an exciting range of benefits designed to enhance both your professional and personal well-being.

More time for you: Enjoy 25 days of annual leave plus your birthday off, because you deserve to celebrate you. Want more flexibility? You can buy or sell up to 5 extra days to tailor time off around what matters most.
Private Medical Insurance: We’ve got you covered with comprehensive private healthcare, including family options for added peace of mind.
Career growth that keeps you ahead: We invest in your future with ongoing training and development, so you’re always learning, growing and staying ahead of the curve.
Wellness that works for you: Love yoga, or going to the gym? We encourage an active lifestyle and support your wellness goals with a fitness reimbursement scheme that helps cover your gym membership or fitness-related expenses.
Life Assurance: Gain peace of mind with our life insurance coverage that ensures your loved ones are protected, because we care about your future as much as your present.
Smarter Retirement Planning: Plan for your future with our pension options and resources to help build a secure financial foundation.
Perkbox: Treat yourself! From shopping to spa days, to saving money on that new TV, our Perkbox membership gives you access to exclusive discounts on hundreds of products and services.
Recognition that counts: Great work doesn’t go unnoticed here. Our reward and recognition scheme celebrate your impact and let your brilliance shine.
Give back and get involved: Join us in making a difference through paid volunteering days that let you support the causes that matter to you.

Inclusion at Envitia

At Envitia, we celebrate diversity and are committed to creating an inclusive environment for all employees. We welcome applicants from all backgrounds and walks of life. We believe that our strength lies in our differences, and we are dedicated to fostering a workplace where everyone feels valued, respected, and empowered.

We encourage applications from people of all abilities, ages, genders, sexual orientations, races, ethnicities, and religions. We strive to support a culture of inclusion, accessibility, and work-life balance.

If you require any accommodations during the application or interview process, please let us know.

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