Principal Backend Engineer - Java
Principal Backend Engineer - Java

Principal Backend Engineer - Java

City of London Full-Time 48000 - 72000 ÂŁ / year (est.) No home office possible
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At a Glance

  • Tasks: Lead the design of secure, scalable backend systems using Java and mentor teams.
  • Company: Join Capco, a forward-thinking tech consultancy shaping digital financial services.
  • Benefits: Enjoy competitive pay, flexible holidays, mental health support, and continuous learning opportunities.
  • Why this job: Make a real impact in the financial sector while growing your skills in a collaborative environment.
  • Qualifications: Expertise in Java, Spring Boot, and cloud solutions; leadership experience is a plus.
  • Other info: Be part of a culture that values individuality and encourages personal growth.

The predicted salary is between 48000 - 72000 ÂŁ per year.

The Role

We’re looking for a Principal Backend Engineer (Java) to join our Technology & Engineering team. This leadership-level role calls for deep technical acumen, a security-first mindset, and strong coaching capabilities. You’ll architect cloud-native backend systems, shape our engineering standards, and mentor teams to deliver high-performance platforms for global financial clients.

What You’ll Do

Lead the design and development of secure, scalable backend systems using Java 11+ and Spring Boot

Architect distributed microservices and event-driven systems deployed to public cloud (preferably AWS)

Guide technical decision-making across teams and align solutions to enterprise strategies

Champion engineering excellence, continuous improvement, and a test-first culture

Coach developers, shape delivery processes, and influence broader engineering practices across Capco

What We’re Looking For

Expertise in Java 11/17+, Spring Boot, and AWS-based enterprise cloud solutions

Proven track record architecting secure, scalable services using microservices and CQRS patterns

Strong experience in CI/CD pipelines, SQL/NoSQL, Kafka, CloudFormation, and streaming frameworks

Advanced understanding of system security protocols (e.g., OAuth, IAM, TLS, encryption)

Leadership capability to manage and mentor teams while driving technology strategy

Bonus Points For

Contributions to thought leadership, mentoring, or RFPs within consultancy or tech environments

Hands-on experience with GitLab CI/CD, Cucumber, and Behaviour Driven Design

AWS Certified Solutions Architect (Associate or Professional)

History of delivering large-scale customer-facing applications

Passion for experimenting with new tools and approaches within backend engineering

Why Join Capco

Deliver high-impact technology solutions for Tier 1 financial institutions

Work in a collaborative, flat, and entrepreneurial consulting culture

Access continuous learning, training, and industry certifications

Be part of a team shaping the future of digital financial services

Help shape the future of digital transformation across FS & Energy.

We offer a competitive, people-first benefits package designed to support every aspect of your life:

  • Core Benefits:Discretionary bonus, competitive pension, health insurance, life insurance and critical illness cover.
  • Mental Health:Easy access to CareFirst, Unmind, Aviva consultations, and in-house first aiders.
  • Family-Friendly:Maternity, adoption, shared parental leave, plus paid leave for sickness, pregnancy loss, fertility treatment, menopause, and bereavement.
  • Family Care:8 complimentary backup care sessions for emergency childcare or elder care.
  • Holiday Flexibility:5 weeks of annual leave with the option to buy or sell holiday days based on your needs.
  • Continuous Learning:Your growth, your way – minimum 40 hours of training annually. Take your pick; workshops, certifications, e-learning. Also, Business Coach assigned from Day One: Get one-on-one guidance to fast-track your goals and accelerate your development.
  • Extra Perks:Gympass(Wellhub), travel insurance, Tastecard, season ticket loans, Cycle to Work, and dental insurance.

Inclusion at Capco
We’re committed to making our recruitment process accessible and straightforward for everyone. If you need any adjustments at any stage, just let us know – we’ll be happy to help. We value each person’s unique perspective and contribution. At Capco, we believe that being yourself is your greatest strength. Our #BeYourselfAtWork culture encourages individuality and collaboration – a mindset that shapes how we work with clients and each other every day.

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Principal Backend Engineer - Java employer: Capco

Capco is an exceptional employer that fosters a collaborative and entrepreneurial culture, perfect for a Principal Backend Engineer looking to make a significant impact in the financial services sector. With a strong emphasis on continuous learning and personal development, employees benefit from a comprehensive training programme, competitive benefits, and a supportive environment that values individuality and inclusion. Join us to shape the future of digital transformation while enjoying a flexible work-life balance and a people-first approach to employee wellbeing.
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Contact Detail:

Capco Recruiting Team

StudySmarter Expert Advice 🤫

We think this is how you could land Principal Backend Engineer - Java

✨Tip Number 1

Network like a pro! Reach out to your connections on LinkedIn or at industry events. Let them know you're on the lookout for a Principal Backend Engineer role, and who knows? They might just have the inside scoop on openings at Capco or elsewhere.

✨Tip Number 2

Show off your skills in real-time! Consider participating in hackathons or coding challenges. This not only sharpens your Java and Spring Boot skills but also gives you a chance to showcase your expertise to potential employers.

✨Tip Number 3

Prepare for those interviews! Brush up on your knowledge of microservices, CI/CD pipelines, and system security protocols. Practise common interview questions and be ready to discuss how you've led teams and driven technology strategies in the past.

✨Tip Number 4

Don’t forget to apply through our website! It’s the best way to ensure your application gets noticed. Plus, it shows you’re genuinely interested in joining Capco and being part of our awesome team.

We think you need these skills to ace Principal Backend Engineer - Java

Java 11/17+
Spring Boot
AWS-based enterprise cloud solutions
Microservices architecture
CQRS patterns
CI/CD pipelines
SQL/NoSQL databases
Kafka
CloudFormation
Streaming frameworks
System security protocols (OAuth, IAM, TLS, encryption)
Leadership and mentoring
Technical decision-making
Behaviour Driven Design
GitLab CI/CD

Some tips for your application 🫡

Tailor Your CV: Make sure your CV is tailored to the Principal Backend Engineer role. Highlight your experience with Java, Spring Boot, and AWS, and don’t forget to showcase any leadership or mentoring roles you've had. We want to see how you can bring your unique skills to our team!

Craft a Compelling Cover Letter: Your cover letter is your chance to shine! Use it to tell us why you're passionate about backend engineering and how your experience aligns with our needs. Be sure to mention any specific projects that demonstrate your expertise in microservices and cloud-native architectures.

Showcase Your Technical Skills: In your application, make sure to highlight your technical skills clearly. Mention your experience with CI/CD pipelines, system security protocols, and any relevant tools like GitLab or Kafka. We love seeing candidates who are not just experienced but also enthusiastic about technology!

Apply Through Our Website: We encourage you to apply directly through our website for the best chance of getting noticed. It’s straightforward and ensures your application goes straight to the right people. Plus, we’re excited to see what you can bring to the table!

How to prepare for a job interview at Capco

✨Know Your Tech Inside Out

Make sure you’re well-versed in Java 11/17+, Spring Boot, and AWS. Brush up on your knowledge of microservices and CQRS patterns, as these will be crucial in the interview. Be ready to discuss your past projects and how you’ve implemented these technologies.

✨Showcase Your Leadership Skills

As a Principal Backend Engineer, you'll need to demonstrate your ability to lead and mentor teams. Prepare examples of how you've guided technical decision-making and influenced engineering practices in previous roles. Highlight your coaching experiences and how they’ve shaped team performance.

✨Emphasise Security Awareness

With a security-first mindset being essential for this role, be prepared to discuss system security protocols like OAuth, IAM, and encryption. Share any experiences where you’ve implemented security measures in your projects, showcasing your proactive approach to safeguarding systems.

✨Prepare for Scenario-Based Questions

Expect scenario-based questions that assess your problem-solving skills and technical acumen. Think about challenges you've faced in backend development and how you overcame them. Practising these scenarios can help you articulate your thought process clearly during the interview.

Principal Backend Engineer - Java
Capco

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  • Principal Backend Engineer - Java

    City of London
    Full-Time
    48000 - 72000 ÂŁ / year (est.)

    Application deadline: 2027-10-17

  • C

    Capco

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