Back End Developer

Back End Developer

City of London Full-Time 64000 - 76000 £ / year (est.) No home office possible
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At a Glance

  • Tasks: Build and scale core systems for payments, impacting small businesses across the UK.
  • Company: Join a fast-growing fintech on a mission to empower small business owners.
  • Benefits: Enjoy hybrid work, competitive salary, and influence over technical decisions.
  • Why this job: Make a real difference in how small businesses get paid, with a collaborative culture.
  • Qualifications: 5+ years backend experience with Node.js, TypeScript, and PostgreSQL required.
  • Other info: Ideal for those passionate about financial empowerment and working in dynamic environments.

The predicted salary is between 64000 - 76000 £ per year.

Role: Senior Backend Engineer

Salary range: £80,000 – £90,000

Location: Hybrid, 2 days pw, London

Tech stack includes: Node.js, TypeScript, PostgreSQL, AWS

As a Senior Backend Engineer, you’ll be building and scaling the core systems that power payments for thousands of small businesses across the UK. You'll work closely with the product, frontend, and operations teams to deliver secure, high-performance services that are reliable at scale.

Your work will directly impact how small businesses get paid – faster, cheaper, and with more control. This is a great opportunity to join a fast-growing fintech with a mission to level the playing field for small business owners. You'll have significant influence over our architecture and technical decisions as we scale our platform.

Essentials for this role:

  • 5+ years backend development experience, with Node.js and TypeScript
  • Strong understanding of distributed systems, APIs, and microservices
  • Experience working with relational databases, particularly PostgreSQL
  • Familiarity with cloud infrastructure (AWS) and CI/CD pipelines
  • Security-conscious mindset, especially working with financial or sensitive data
  • Clear communicator with a collaborative, product-first approach

Desirables:

  • Experience with event-driven architecture and queues (e.g. SQS, Kafka)
  • Previous work with payment platforms, Open Banking, or fintech APIs
  • Understanding of data privacy and compliance (e.g. PCI-DSS, GDPR)
  • Experience in startup or high-growth environments
  • Interest in financial empowerment and supporting small businesses
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Contact Detail:

Gravitas Recruitment Group (Global) Ltd Recruiting Team

StudySmarter Expert Advice 🤫

We think this is how you could land Back End Developer

✨Tip Number 1

Familiarise yourself with our tech stack, especially Node.js and TypeScript. Consider building a small project or contributing to open-source projects using these technologies to showcase your skills.

✨Tip Number 2

Highlight your experience with distributed systems and APIs in conversations. Be prepared to discuss specific challenges you've faced and how you overcame them, as this will demonstrate your problem-solving abilities.

✨Tip Number 3

Show your understanding of cloud infrastructure, particularly AWS. If you have any certifications or completed courses, mention them during discussions to reinforce your expertise.

✨Tip Number 4

Express your passion for fintech and supporting small businesses. Share any relevant experiences or projects that align with our mission, as this will resonate well with our team and culture.

We think you need these skills to ace Back End Developer

Node.js
TypeScript
PostgreSQL
AWS
Distributed Systems
APIs
Microservices
CI/CD Pipelines
Security Best Practices
Event-Driven Architecture
Message Queues (e.g. SQS, Kafka)
Payment Platforms
Open Banking APIs
Data Privacy Compliance (e.g. PCI-DSS, GDPR)
Collaboration Skills
Product-First Approach
Startup Experience
Financial Empowerment Awareness

Some tips for your application 🫡

Tailor Your CV: Make sure your CV highlights your experience with Node.js, TypeScript, and PostgreSQL. Include specific projects where you've built or scaled backend systems, especially in a fintech context.

Craft a Compelling Cover Letter: In your cover letter, express your passion for supporting small businesses and how your skills align with the company's mission. Mention any relevant experience with payment platforms or cloud infrastructure.

Showcase Your Technical Skills: Be prepared to discuss your technical expertise in distributed systems, APIs, and microservices during the application process. Consider including links to your GitHub or portfolio that demonstrate your work.

Highlight Collaboration Experience: Since the role involves working closely with product and frontend teams, emphasise your collaborative experiences. Provide examples of how you've effectively communicated and worked within cross-functional teams.

How to prepare for a job interview at Gravitas Recruitment Group (Global) Ltd

✨Showcase Your Technical Skills

Be prepared to discuss your experience with Node.js, TypeScript, and PostgreSQL in detail. Highlight specific projects where you've successfully implemented these technologies, and be ready to solve coding challenges or technical questions related to backend development.

✨Demonstrate Your Understanding of Distributed Systems

Since the role involves working with distributed systems and microservices, make sure you can explain how these architectures work. Discuss any relevant experience you have, particularly in building scalable applications and managing APIs.

✨Communicate Your Collaborative Approach

As a Senior Backend Engineer, you'll need to work closely with product, frontend, and operations teams. Be ready to share examples of how you've effectively collaborated in past roles, focusing on your communication skills and product-first mindset.

✨Highlight Your Security Awareness

Given the importance of security in fintech, demonstrate your understanding of data privacy and compliance standards like PCI-DSS and GDPR. Share experiences where you prioritised security in your development process, especially when handling sensitive financial data.

Back End Developer
Gravitas Recruitment Group (Global) Ltd
Location: City of London
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