Principal Software Engineer in Luton

Principal Software Engineer in Luton

Luton Full-Time 70000 - 90000 £ / year (est.) Home office (partial)
United States Digital Space LLC

At a Glance

  • Tasks: Lead the design and development of high-performance software systems in a dynamic eCommerce environment.
  • Company: Join a forward-thinking tech company focused on innovation and collaboration.
  • Benefits: Enjoy a competitive salary, bonus opportunities, generous holiday, and flexible benefits.
  • Other info: Great career growth potential and a culture of continuous learning.
  • Why this job: Make a real impact by driving technical excellence and shaping the future of eCommerce.
  • Qualifications: Expertise in software engineering, cloud technologies, and strong leadership skills required.

The predicted salary is between 70000 - 90000 £ per year.

As a Principal Software Engineer within the eCommerce Platform Delivery team, you will provide leadership and technical stewardship across multiple squads within a defined Mission. You will be responsible for the overall design and accountable for upholding engineering standards, ensuring the delivery of robust, secure, scalable, and high-performance systems. Your role will involve guiding teams towards technical excellence, fostering a culture of continuous improvement, and driving high performance across all aspects of software development.

Working closely with Product Managers, Agile Delivery Managers, Enterprise Architects, and the Chapter Lead for Software Engineering, you will ensure engineering standards are upheld, guide complex technical solutions, and align strategy, approach, and principles across the Mission. By championing best practices, modern architectures, and innovation, you will accelerate the delivery of customer-facing features, improve platform resilience, and ensure the platform remains robust, scalable, and future‑ready.

What you’ll be doing:

  • Own the Mission technical vision, strategy, and roadmap, ensuring alignment with business objectives and platform standards.
  • Take accountability for technical delivery and execution of the technical vision and strategy across multiple squads.
  • Lead the design, architecture, and development of scalable, reliable, and high-performance software systems, including system design, technology selection, and overall architecture.
  • Champion data integrity and performance, ensuring systems are designed for scalability and operational resilience.
  • Own the delivery of key product features, ensuring they meet performance, security, and scalability requirements.
  • Ensure the quality of code delivered across squads, adhering to best practices and engineering standards.
  • Actively contribute to and lead code reviews, providing constructive feedback to continuously improve code quality and team capability.
  • Utilise metrics and feedback loops to monitor team performance, identify areas for improvement, and drive the continuous development of high-performing engineering teams.
  • Mentor and provide guidance to junior and mid-level engineers, fostering a culture of continuous learning and improvement.
  • Stay informed of industry trends, emerging technologies, and methodologies, applying insights to improve software development practices and platform capabilities.

Requirements of the Role:

  • Ability to link technical strategy and architectural decisions to measurable outcomes, including feature performance, platform reliability, and customer impact.
  • Deep knowledge of SQL, databases, data modelling, and performance optimisation.
  • Proven expertise in cloud and commerce technologies, including AWS.
  • Strong background in Microsoft technologies, including C# .NET.
  • Extensive experience in observability, leveraging tools for monitoring metrics, telemetry, alerts, and logs to ensure system reliability and performance.
  • Expertise in data architecture and modelling, with a strong understanding of legacy systems and performance optimisation techniques relevant to operational data platforms.
  • Proven experience designing and implementing event‑driven architectures (EDA) to support real‑time data flows.
  • Strong knowledge of infrastructure and networking principles, with experience in designing and maintaining secure, high-performance systems across distributed platforms.
  • Extensive software engineering experience with proven capability to lead complex projects and collaborate across cross‑functional teams.
  • Strong understanding of data platforms, with the ability to modernise legacy systems while maintaining reliability and performance.
  • Deep knowledge of modern design patterns and architectures, including APIs, event‑driven architectures (EDA), microapps, front‑end frameworks, and app technologies, with experience applying these in eCommerce environments.

What we can offer you:

  • Competitive base salary.
  • Up to 20% bonus.
  • 25 days holiday.
  • BAYE, SAYE & Performance share schemes.
  • 7% pension.
  • Life Assurance.
  • Flexible benefits package.
  • Excellent staff travel benefits.

Principal Software Engineer in Luton employer: United States Digital Space LLC

As a Principal Software Engineer in our eCommerce Platform Delivery team, you will thrive in a dynamic work culture that prioritises innovation and technical excellence. We offer competitive salaries, generous bonuses, and a flexible benefits package, alongside opportunities for professional growth through mentorship and collaboration with cross-functional teams. Our commitment to continuous improvement and employee development ensures that you will not only contribute to cutting-edge projects but also advance your career in a supportive environment.

United States Digital Space LLC

Contact Details:

United States Digital Space LLC Recruitment Team

StudySmarter Expert Advice🤫

We think this is how you could land Principal Software Engineer in Luton

Join Local Tech Meetups

Get out there and mingle with fellow developers by joining local tech meetups. It’s a fantastic way to meet people who might be working at United States Digital Space LLC or know someone who does. Plus, you can pick up some trendy tech skills and trends while you're at it!

Contribute to Open Source Projects

Show off your coding chops by jumping into open-source projects. Not only does this give you practical experience, but it also gets you noticed in the dev community. You'll create a killer portfolio that speaks volumes about your skills to United States Digital Space LLC.

Tap into Online Developer Communities

Don’t underestimate the power of online developer communities like GitHub, Stack Overflow, and even Reddit. Participate in discussions, share your projects, and build your visibility. We can often find opportunities through these channels that can lead to a full-time gig at companies like United States Digital Space LLC.

Explore Job Boards Specifically for Tech Roles

Keep your eyes peeled on job boards that focus on tech roles. Sites like TechCareers or Stack Overflow Jobs can often have listings for companies like United States Digital Space LLC that might not show up on broader job sites. Make it a habit to check these regularly, and don’t hesitate to apply directly through our website!

We think you need these skills to ace Principal Software Engineer in Luton

Technical Leadership
Software Architecture
Cloud Technologies (AWS)
C# .NET
SQL
Data Modelling
Performance Optimisation

Some tips for your application 🫡

Show off your coding skills:When applying for a software engineering role, it's super important to showcase your coding skills. Make sure your CV includes your tech stack, any relevant programming languages you’re comfortable with, and examples of projects you've worked on. If you have a GitHub profile, link it up! We love to see code in action.

Tailor your portfolio:For a full-time role, we’d expect to see some solid examples of your work in your portfolio. Make sure to include at least two or three projects that highlight your problem-solving skills and your ability to work with different technologies. Focus on the projects that are most relevant to the position at United States Digital Space LLC.

Craft a killer cover letter:Your cover letter is your chance to stand out—make it personal! Explain why you want to work at United States Digital Space LLC and how your skills align with the role. Show us your passion for software development. We dig enthusiastic candidates who understand the value of collaboration and continuous learning!

Be clear and concise:When it comes to writing your CV and cover letter, clarity is key. Avoid jargon that could confuse us and stick to simple, direct language. Highlight your achievements with quantifiable results where possible, and keep everything easy to read. A well-organised application goes a long way!

How to prepare for a job interview at United States Digital Space LLC

Brush Up on Your Coding Skills

For a full-time software engineering role, it's crucial that we stay sharp with our coding abilities. Expect technical questions that might involve solving problems on the spot or discussing algorithms. Practise on platforms like LeetCode or HackerRank to get comfortable with the types of questions that often come up.

Know Your Tools and Frameworks

Make sure we’re well-acquainted with the tools and technologies listed in the job description. Familiarise ourselves with any specific frameworks or programming languages mentioned. If United States Digital Space LLC uses React or Node.js, for instance, be ready to discuss how we’ve used them in previous projects or coursework.

Showcase Your Projects

Bring along a portfolio that highlights our best work. This could be code samples, GitHub repositories, or any side projects we’ve built. Make sure we can talk through our thought process for each project, especially the challenges we faced and how we solved them—this shows our problem-solving skills in action.

Prepare for Behavioural Questions

While technical skills are key, full-time positions also require cultural fit. Be ready to discuss our previous experiences and how we handle teamwork, conflict, and deadlines. Brush up on the STAR method—Situation, Task, Action, Result—to clearly articulate our past experiences when discussing how we've contributed to a team.