Platform Engineer - Cheltenham

SiXworks; Cheltenham; On-site; GBP 70,000 - 90,000; Full time

Benefits offered by this job

25 days annual leave + bank holidays

Private Medical cover

Life Assurance

Generous pension

Bonus

Professional development and training

On-site parking and facilities

Job summary

SiXworks is seeking a Platform Engineer in the United Kingdom to deploy new solutions and enhance existing platforms, balancing reliability and performance in live environments.

You’ll work in a small, high-performing team, focusing on secure, mission-critical technology for Defence and National Security. The role offers opportunities for growth, mentorship, and working with cutting-edge tools on-site.

Qualifications

• Experience deploying new solutions in challenging environments.
• Comfortable managing production systems in live environments.
• Ability to work in a collaborative team and handle ambiguity.

Responsibilities

• Deploy new solutions in challenging environments and enhance platforms.
• Balance reliability, performance, and operational excellence in live environments.
• Collaborate with team and customers to share ideas.

Job description

Work on Technology That Protects What Matters

AtSiXworks, we build secure digital solutions that supportDefence and National Security missions. Our teams work on complex problems where reliability, security, and speed of innovation matter.

We’re looking for a Platform Engineer who enjoys solving difficult technical challenges and wants their work to have real operational impact.

What You’ll Do

As a Platform Engineer, you'llshowcaseyourexpertiseby deployingnew solutionsin challenging environments and enhancing existing platforms. You embrace the \"MVP\" approach, building incrementally and learning quickly from failures. You love tinkering and discovering innovative solutions.You'recomfortable sharing ideas with both your team and our customers, and confident managing and supporting production systems, balancing reliability, performance, and operational excellence in live environments.

We believe in using the right tools and technologies to deliver the best outcomes for our customers. Whileexpertisein every toolisn'trequired, we value experience with similar technologies and an understanding of the problems they solve. Our current stack includes GitHub and GitHub Actions, Terraform, Kubernetes, Helm, Zarf, and UDS (Unicorn Delivery Service), along with languages such as Go, Rust, and, of course, Bash. These tools enable us to build, manage, and deploy solutions across both cloud environments (AWS) and on-premises platforms (VMware).

You'lljoin a small, high-performing team that supports you from day one and throughout your journey with us. The challengesyou'lltackle are unique, whether due to security needs or location constraints, offering you a chance to make a significant impact.

We are committed to your professional growth, offering continuous learning opportunities, mentorship, and the chance to work withcutting-edgetechnologies. Your development is our priority, and we provide the time and support you need to thrive and advance in your career.

What We’re Looking For

We value people who take ownership, think critically, and enjoy working as part of a collaborative team tackling complex challenges. You don’t need to tick every box, but you should apply if:

• You care about customer outcomes, and you want to know and understand who we work with.

• You love finding new ways to solve problems.

• You’recomfortable working in a team that deals with ambiguity.

• You like spending a few days a week physically with the team.
• You have experience operating production environments supporting live users.

Just as important are curiosity, strong problem solving ability, and the motivation to continuously improve how technology is designed and delivered.

About SiXworks

SiXworks is a specialist digital innovation partner deliveringsecure, mission-critical technologyto Defence and National Security organisations. We focus ondigital experimentation, secure-by-design architecture, cloud technologies, and rapid application developmentto help our customers move faster and stay ahead of evolving challenges.

Our team combines expertise from across technology, business, and operational backgrounds including the armed forces creating a collaborative environment where practical thinking and innovation thrive.

Why Join Us

Our culture is guided by six principles:Agility, Security, Innovation, Quality, Collaboration and InclusivityourNorth Starfor how we work. SiXworksis a leading provider of secure digital solutions, specialising in digital experimentation and focused on fail-safe-fastcutting-edgetechnology solutions deployed in highly secure environments.

As an end-to-end digital innovation and delivery partner, we turn complex challenges into mission-critical digital advantages. This is a thrilling time for us, with ambitious plans for growth. We are looking for brilliant, experienced, driven and self-motivated people to join the team on our journey.

We offer competitive salaries and a package that supports your wellbeing and development, including 25 days annual leave + bank holidays, free Private Medical cover and Life Assurance, Generous pension (10% employer, 5% employee contribution), Bonus and Professional development and training support. In addition to secure parking, gym, café & restaurant on site and lots of open break out spaces.

A word on UK Security Clearance

Due to the secure nature of the positionand working environment, you must have or be eligible to obtainSecurity Clearance.More details relating to UK Security Clearance can be found here:

United Kingdom Security Vetting: clearance levels - GOV.UK (www.gov.uk)