Founding Back-End Engineer in City of London

Founding Back-End Engineer in City of London

City of London Full-Time 36000 - 60000 £ / year (est.) No home office possible
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At a Glance

  • Tasks: Lead the design and development of scalable backend services and APIs.
  • Company: Join an innovative UK tech startup focused on optimising clinical trials with AI.
  • Benefits: Competitive salary, growth opportunities, and a chance to shape the product from the ground up.
  • Why this job: Make a real impact in a fast-paced environment and influence engineering culture.
  • Qualifications: 5+ years of backend experience and strong skills in languages like Java, Python, or Node.js.
  • Other info: Collaborative team atmosphere with visible impact on projects.

The predicted salary is between 36000 - 60000 £ per year.

I am partnering with an early-stage UK tech startup focused on using data and AI to optimise and accelerate the design of clinical trials.

About the Role

I am seeking a highly experienced Senior Back-End Engineer to join a fast-growing, deep-tech venture at an early stage. As a key member of the founding engineering team, you will shape and build the core server-side architecture that underpins their next-generation platform. You’ll work closely with product and engineering leadership to design, implement, and scale reliable backend services, APIs, and systems — helping to turn cutting-edge ideas into real-world products.

What You’ll Do

  • Lead the design, development, and maintenance of scalable, secure, and high-performance backend services and APIs.
  • Collaborate across the engineering team — including frontend, product, and QA — to architect solutions that address business needs and technical challenges.
  • Drive the full development lifecycle: requirements, design, implementation, testing, deployment, and support.
  • Improve and optimise existing systems for performance, reliability, and maintainability.
  • Conduct code reviews, provide technical leadership, and mentor junior engineers to uphold best practices.
  • Identify and address security, performance, and scaling bottlenecks.

What We’re Looking For

  • 5+ years of hands-on experience building backend systems in a production environment.
  • Strong experience with backend languages and frameworks (e.g., Java, Spring, Python, Go, Node.js — adaptable to your stack).
  • Proven track record designing and implementing RESTful APIs and microservices.
  • Solid understanding of databases (SQL and NoSQL) and effective data modeling.
  • Familiarity with cloud platforms (AWS, GCP, Azure) and CI/CD pipelines.
  • Experience with performance optimisation, security best practices, and scalable architectures.
  • Excellent communication skills and ability to work effectively in an agile, cross-functional team.

Nice-to-Have

  • Experience with distributed systems and asynchronous architectures.
  • Knowledge of observability tools, testing frameworks, and containerisation (Docker, Kubernetes).
  • Previous involvement in early-stage or founding engineering teams.

Why Join?

  • Play a pivotal role in shaping a product from the ground up.
  • Influence technical direction and engineering culture.
  • Work in a collaborative, fast-paced environment where your impact is visible.
  • Competitive compensation and growth opportunities.

Following your application, Jay Robins, a specialist AI Recruitment consultant, will discuss the opportunity with you in detail. He will be more than happy to answer any questions relating to the industry and the potential for your career growth. The conversation can also progress further to discussing other opportunities, which are also available right now or will be imminently becoming available. This position has been highly popular, and it is likely that it will close prematurely. We recommend applying as soon as possible to avoid disappointment.

Please contact Jay Robins for any further information.

Email: jrobins@barringtonjames.com

Founding Back-End Engineer in City of London employer: Barrington James

Join a pioneering tech startup in London, where you will play a crucial role in shaping innovative solutions that leverage data and AI to transform clinical trials. With a collaborative work culture and a focus on employee growth, this position offers competitive compensation and the opportunity to influence both technical direction and engineering culture as part of a founding team. Embrace the chance to make a tangible impact in a fast-paced environment while advancing your career in a meaningful way.
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Contact Detail:

Barrington James Recruiting Team

StudySmarter Expert Advice 🤫

We think this is how you could land Founding Back-End Engineer in City of London

✨Tip Number 1

Network like a pro! Reach out to your connections in the tech industry, especially those who might know about early-stage startups. A personal introduction can make all the difference in landing that interview.

✨Tip Number 2

Show off your skills! Create a portfolio or GitHub repository showcasing your best backend projects. This gives potential employers a taste of what you can do and sets you apart from the crowd.

✨Tip Number 3

Prepare for technical interviews by brushing up on your coding skills and system design knowledge. Practice common backend problems and be ready to discuss your past experiences in detail.

✨Tip Number 4

Don’t forget to apply through our website! It’s the best way to ensure your application gets seen. Plus, it shows you’re genuinely interested in joining our team and contributing to something amazing.

We think you need these skills to ace Founding Back-End Engineer in City of London

Back-End Development
API Design and Implementation
Microservices Architecture
Database Management (SQL and NoSQL)
Cloud Platforms (AWS, GCP, Azure)
CI/CD Pipelines
Performance Optimisation
Security Best Practices
Scalable Architectures
Java
Spring
Python
Go
Node.js
Communication Skills

Some tips for your application 🫡

Tailor Your CV: Make sure your CV is tailored to the role of Founding Back-End Engineer. Highlight your experience with backend languages and frameworks, and don’t forget to showcase any relevant projects that demonstrate your skills in building scalable systems.

Craft a Compelling Cover Letter: Your cover letter is your chance to shine! Use it to explain why you’re excited about this opportunity and how your background aligns with the company’s mission. Be genuine and let your personality come through!

Showcase Your Technical Skills: In your application, be specific about your technical expertise. Mention the backend languages you’ve worked with, your experience with RESTful APIs, and any cloud platforms you’re familiar with. This will help us see how you can contribute to our team.

Apply Through Our Website: We encourage you to apply directly through our website for a smoother process. It helps us keep track of applications and ensures you get the attention you deserve. Don’t wait too long; this position is popular!

How to prepare for a job interview at Barrington James

✨Know Your Tech Stack Inside Out

Make sure you’re well-versed in the backend languages and frameworks mentioned in the job description, like Java, Python, or Node.js. Be ready to discuss your past projects and how you’ve used these technologies to solve real-world problems.

✨Showcase Your Problem-Solving Skills

Prepare to talk about specific challenges you've faced in previous roles, especially around performance optimisation and security. Use the STAR method (Situation, Task, Action, Result) to structure your answers and demonstrate your thought process.

✨Understand the Company’s Vision

Research the startup's mission and how they use data and AI in clinical trials. This will help you align your answers with their goals and show that you’re genuinely interested in contributing to their vision.

✨Ask Insightful Questions

Prepare thoughtful questions about the team dynamics, the tech stack, and the company culture. This not only shows your enthusiasm but also helps you gauge if the company is the right fit for you.

Founding Back-End Engineer in City of London
Barrington James
Location: City of London

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