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For Companies At a Glance
- Tasks: Lead the design and delivery of modern, scalable software systems.
- Company: Join a dynamic startup revolutionising cloud-based software delivery.
- Benefits: Enjoy flexible working, 25 days holiday, and a ÂŁ1,000 learning budget.
- Why this job: Make a real impact on innovative projects with top-tier clients like the UK Home Office.
- Qualifications: Strong experience in software engineering, architecture, and mentoring teams.
- Other info: Be part of a fun, inclusive culture with regular team socials and perks.
The predicted salary is between 68000 - 85000 ÂŁ per year.
Location: London, UK (Hybrid ~1 day per week in office / onsite)
Contract: Permanent, Full-time
Package: ÂŁ80,000-100,000 + 10% bonus + 10% shares options + benefits
About Appvia
At Appvia, we help organisations modernise how they build and operate software. We are a specialist cloud, platform, and solutions engineering consultancy, delivering resilient, scalable systems that enable teams to move faster while maintaining quality, security, and reliability.
Our work spans cloud platforms, developer experience, and modern application delivery. We partner with customers across public and private sectors to reduce technical debt, improve engineering practices, and support long-term system evolution using modern software engineering approaches.
About the Role
As a Principal Software Engineer, you will play a senior technical leadership role across Appvia's software delivery engagements. You will help customers and lead a team to design, build, and evolve modern software systems, while guiding teams towards best practices in architecture, testing, and developer productivity.
This is a handsâon leadership role for an experienced engineer who enjoys operating across design, architecture, and delivery. You will work closely with engineers, delivery leads, and platform teams, shaping technical direction, supporting earlyâstage solution design, and mentoring teams delivering complex software systems.
You will also contribute to Appvia's broader engineering capability, influencing standards, patterns, and approaches that are applied consistently across customer engagements.
Interview Process - 4 Stage
- Discovery conversation with Talent Acquisition
- Technical assessment
- Technical conversation
- Competencyâfocused final interview
About You
You are a senior software engineer with strong architectural judgement and a passion for wellâdesigned systems. You are comfortable leading technically, influencing delivery decisions, and working closely with customers in a consulting environment.
Youâll bring:
- Strong experience with Domain Driven Design (DDD) and modern system decomposition.
- Proven delivery of microserviceâbased architectures.
- Deep handsâon experience with React and fullâstack development.
- Experience improving engineering effectiveness through testing strategy, automation, and developer tooling.
- Exposure to AIâassisted development approaches to improve code quality and productivity.
- Confidence mentoring engineers and leading technical discussions.
- A consulting mindset, able to translate business problems into practical technical solutions.
- Experience in regulated or public sector environments is beneficial but not required.
Responsibilities
- Lead the design and delivery of modern, scalable software systems.
- Shape architecture, service boundaries, and dependencies across complex systems.
- Drive improvements in development processes, testing strategy, and delivery cadence.
- Work handsâon across the stack, particularly on Reactâbased applications.
- Support teams in reducing technical debt and improving longâterm maintainability.
- Collaborate with platform and cloud engineers to deliver cohesive endâtoâend solutions.
- Act as a senior technical advisor to customers, guiding decisionâmaking and tradeâoffs.
- Contribute to shared engineering standards, patterns, and best practices within Appvia.
Technical Skills
Core technologies (in order of importance):
- Java / Spring
- NoSQL / SQL databases
- React / Javascript
- HTML / CSS / XML
- Playwright
- Docker / Kubernetes
- Maven
- GitLab
- AWS
Nice to have:
- GovUK UI Framework
- Azure / GCP
- .NET
Why join Appvia?
We are a selfâfunded, London based startup; providing businesses with a fast and secure way to deploy containerised applications into the cloud. We are on a mission to enable organisations to make cloudâbased software delivery simple and efficient, whilst having the insights into costs, security and cadence.
As a company that holds customers at the heart of everything we do, we are looking for candidates that want to make a real change to how Dev and Ops is working in the industry. With us our customers, like the UK's Home Office & Bank of England, are harnessing cloudânative technologies, limiting the challenges of infrastructure management and rapidly delivering digital products.
Whatâs on offer?
- Workâlife balance
- Flexible working with core hours of 10-4pm because we know life happens outside of work
- Hybrid working - only one compulsory office day per month
- 25 days' holiday a year, plus bank holidays
- An additional day off for your birthday
- Enhanced maternity and paternity to full pay
- Workplace Nursery Benefit to help working parents
For your wellâbeing
- Full Private Healthcare cover for you with partners and children covered 50%
- Death in Service
- Cycle to Work scheme
- Electric Car Scheme
- Pension plus a salary sacrifice option for even greater savings
- Employee Assistance Programme
- Free hygiene products available in the London office
- Mental health support
- Free therapy through AXA
- Access to the Headspace App
- Trained Mental Health First Aiders
Other fun perks
- Learning budget of ÂŁ1,000 a year
- Your own MacBook Pro while you work at Appvia
- Dog friendly office
- Wear what makes you comfortable
- Free snacks in the office
- Pool table & ping pong table
- Regular team socials, board game nights, industry meetups and more!
But donât just take our word for it, you can check out what our Appvians say about us on Glassdoor and by following us on LinkedIn, Twitter and TikTok.
We are proud to be an equal opportunities employer and actively encourage, respect, and recognise diversity of thought and background throughout the business. All applicants will be considered for employment without attention to age, ethnicity, religion, sex, sexual orientation, gender identity, family or parental status, national origin, or veteran, neurodiversity, and disability status.
Note: While all roles are active and approved at the time of posting, the dynamic nature of our startâup means some applications may be processed to pipeline talent for future opportunities rather than current openings. We will strive to keep you informed of any changes to the status of your application.
Principal Software Engineer - UK Security Clearance eligibility required. in London employer: Appvia
Contact Detail:
Appvia Recruiting Team
StudySmarter Expert Advice đ¤Ť
We think this is how you could land Principal Software Engineer - UK Security Clearance eligibility required. in London
â¨Tip Number 1
Network like a pro! Reach out to your connections on LinkedIn or at industry events. A personal introduction can make all the difference when you're trying to land that Principal Software Engineer role.
â¨Tip Number 2
Prepare for those interviews! Brush up on your technical skills and be ready to discuss your experience with microservices and DDD. We want to see how you can lead teams and influence delivery decisions.
â¨Tip Number 3
Show off your hands-on experience! Be ready to share examples of how you've improved engineering effectiveness through testing strategies and automation. This is key for us at Appvia!
â¨Tip Number 4
Donât forget to apply through our website! Itâs the best way to ensure your application gets the attention it deserves. Plus, we love seeing candidates who are genuinely interested in joining our mission.
We think you need these skills to ace Principal Software Engineer - UK Security Clearance eligibility required. in London
Some tips for your application đŤĄ
Tailor Your CV: Make sure your CV reflects the skills and experiences that match the Principal Software Engineer role. Highlight your experience with microservices, DDD, and any relevant technologies like React and Java.
Craft a Compelling Cover Letter: Use your cover letter to tell us why you're passionate about software engineering and how you can contribute to our mission at Appvia. Share specific examples of your past work that align with our values.
Showcase Your Leadership Skills: As a Principal Software Engineer, you'll be leading teams. Make sure to highlight your mentoring experience and any instances where you've influenced technical decisions or improved processes.
Apply Through Our Website: We encourage you to apply directly through our website for the best chance of getting noticed. Itâs the quickest way for us to see your application and get the ball rolling!
How to prepare for a job interview at Appvia
â¨Know Your Tech Stack
Make sure youâre well-versed in the core technologies mentioned in the job description, like Java, Spring, and React. Brush up on your knowledge of microservices and Domain Driven Design, as these will likely come up during technical discussions.
â¨Showcase Your Leadership Skills
As a Principal Software Engineer, you'll be expected to lead teams and influence decisions. Prepare examples from your past experiences where you've successfully guided a team or made impactful architectural decisions. This will demonstrate your capability to take on a senior role.
â¨Understand the Consulting Mindset
Since this role involves working closely with customers, think about how you can translate complex technical concepts into practical solutions for business problems. Be ready to discuss how you've done this in previous roles, especially in regulated environments if applicable.
â¨Prepare for Behavioural Questions
Expect competency-focused questions that assess your problem-solving skills and teamwork. Use the STAR method (Situation, Task, Action, Result) to structure your answers, highlighting your contributions to successful projects and how youâve handled challenges.
