Backend Engineer Pythonjava Apis Scalable Systems Jobs in UK

Professional job seekers finding United Kingdom jobs through Expertini
750,000+ professionals on Expertini 750,000+ Candidates
Join our global community
Expertini Penguin Mascot Resume Score™
Resume Score™ Instantly
Upload Your CV
Quick 30-second process

Apply Today & Jumpstart Your Career on Expertini, Trusted Since 2008.

Reset

Create Job Alert

 
   
Reset

Backend Engineer – APIs, Payments & Scalable Systems

A technology firm in Greater London is seeking a skilled Backend Developer to build and maintain their platform infrastructure. The role involves designing robust APIs using Node.js and TypeScript, integrating payment solutions like Stripe, and ensuring scalable database performance. Ideal candidates should have ...

Senior Backend Engineer — Scalable APIs & Systems

A leading marketing firm in Greater London seeks a Senior Backend Engineer to design and develop scalable backend systems. You will write production-grade code, solve distributed systems challenges, and collaborate with cross-functional teams. The ideal candidate has expertise in Python and frameworks like FastA ...

Senior Backend Engineer Scalable APIs & Reliable Systems

Omaze is seeking a Software Engineer to join their backend team in the United Kingdom. The role involves enhancing backend systems, engaging in cross-functional collaboration, and mentoring fellow engineers. Ideal candidates will have experience with backend technologies, API and database design, as well as a st ...

Backend Engineer: Python/Java APIs & Scalable Systems

ELLIOTT MOSS CONSULTING PTE. LTD. is seeking a skilled Backend Developer in Penarth, Wales. The successful candidate will design, develop, and maintain scalable backend services using Python and Java. Responsibilities include implementing RESTful APIs, integrating backend services with front-end applications, an ...

Backend Engineer – Scalable Data & APIs

A leading software company based in Greater London is seeking a passionate Backend Software Engineer to architect, develop, and maintain high-performance backend systems. You will collaborate with cross-functional teams to create sophisticated data solutions, optimize code for speed, and build robust APIs. The i ...

Go Backend Engineer — Scalable APIs & Cloud

A leading software provider in the UK is seeking a Software Engineer (Golang) to design and develop scalable backend systems. You will work closely with cross-functional teams to identify business solutions. The ideal candidate will have proficiency in Golang, experience in RESTful APIs, and familiarity with clo ...

.NET Backend Engineer — Build Scalable APIs

Recipero is seeking a talented Software Engineer with strong .NET experience to join its growing engineering team. The role involves building and maintaining applications in the .NET ecosystem, collaborating in an agile environment, and troubleshooting various systems. Ideal candidates will have 3+ years of .NET ...

Senior Backend Engineer — Scalable APIs & Services

A leading cybersecurity company is seeking a Senior Software Engineer to develop server-side applications and APIs for their FortiDLP platform. This role involves implementing new functionalities, maintaining existing features, and ensuring code quality. Candidates should have 3-5 years of experience in software ...

Senior Backend Engineer: Node.js & Scalable APIs

A leading tech startup in the UK is looking for a Backend Engineer with strong Node.js programming skills to develop scalable backend services. Responsibilities include designing and maintaining RESTful APIs, optimizing database performance, and collaborating with cross-functional teams. The ideal candidate hold ...

Senior Backend Engineer — Scalable APIs & Services

A leading cybersecurity company is seeking a Senior Software Engineer to develop server-side applications and APIs for their FortiDLP platform. This role involves implementing new functionalities, maintaining existing features, and ensuring code quality. Candidates should have 3-5 years of experience in software ...

Senior Backend Engineer: Build Scalable APIs & Microservices

Burns Sheehan is looking for a Senior Backend Engineer for a rapidly scaling iGaming platform in the United Kingdom. This role involves owning the APIs and contributing to systems architecture while migrating from a Python monolith to resilient services. Ideal candidates have strong experience in backend enginee ...

Senior Backend Engineer: Build Scalable APIs & Microservices

Burns Sheehan is looking for a Senior Backend Engineer for a rapidly scaling iGaming platform in the United Kingdom. This role involves owning the APIs and contributing to systems architecture while migrating from a Python monolith to resilient services. Ideal candidates have strong experience in backend enginee ...

Node.js Backend Engineer Build Scalable, Secure APIs

A recruitment agency in the tech sector is seeking a Back End Developer (Node.js) for a leading cybersecurity client in the UK. In this role, you will design and maintain scalable APIs, enhance data feeds, and ensure secure integrations. The ideal candidate has a bachelor’s degree in Computer Science and over th ...

Flask Backend Engineer (Entry) – Build scalable APIs

Backend Development: Set up and maintain the backend server using Flask to support the application, ensuring scalability, security, and efficiency Seniority level Entry level Employment type Full-time Job function Engineering and ...

Remote First Backend Engineer for Scalable APIs

Develop is looking for a Backend Engineer to join their forward-thinking team in the United Kingdom. This role involves designing and optimizing backend systems for a modern cybersecurity platform. You will engage in creating APIs, writing maintainable code, and troubleshooting backend issues. The position suppo ...

Backend Engineer: Build Scalable APIs & Services (Hybrid)

Nottingham Building Society is looking for a Backend Engineer to design and deliver secure and scalable services. In this hybrid role based in Nottingham, you'll work with cross-functional teams to build high-performance APIs and contribute to technical discussions. Key qualifications include strong backend fund ...

AI Driven Backend Engineer: Scalable Node.js APIs

Compare The Market Limited is seeking a Software Engineer for their Customer Capabilities team in London. You will build and maintain scalable backend services and APIs using Node.js, collaborate across teams, and engage with AI-enabled engineering practices. The ideal candidate will have strong Node.js skills, ...

Backend Engineer (C#) — Remote Ready, Scalable APIs

A cybersecurity solutions provider in Greater London is seeking a skilled Backend Engineer to design and develop backend systems. The ideal candidate will have experience with .NET and C#, API development, and cloud services. The role offers flexibility with remote working options and an inclusive workplace cult ...

Senior Java Backend Engineer — Build Scalable APIs

A leading technology company in Southampton is seeking a Senior Backend Engineer to evolve its Unified Profile service. The successful candidate will design and build robust, API-driven services, ensuring a seamless experience across multiple products. With an attractive salary range of £75,000-90,000, the role ...

AI Backend Engineer: Scalable APIs & LLM Workflows

PIXEL1 PTE. LTD. is looking for a Backend Developer based in the Greater London area. You'll build robust API infrastructures and business logic for innovative AI solutions, working alongside Frontend Developers and AI Engineers. The ideal candidate should have a Bachelor's degree in a technical field and strong ...

Senior Java Backend Engineer Scalable APIs & Microservices

Vallum Associates is seeking an experienced Backend Developer to build and maintain scalable, high-performance backend services and APIs for a microservices-based trading platform. The ideal candidate will have over 5 years of experience in backend development with Core Java, strong skills in building scalable A ...

Senior Backend Engineer: AI APIs & Scalable Infra

A leading technology company in Greater London is seeking a Senior Backend Engineer to work on advanced AI systems. The role involves building scalable APIs and improving inference infrastructure while collaborating with AI researchers. The ideal candidate will have strong skills in Python and Go, along with kno ...

Senior Backend Engineer AI Powered, Scalable APIs

Preply is looking for a Senior Engineer to develop and own backend features using Python/Django, enhance customer solutions, and guide team decisions. The role requires expertise in AI tools and troubleshooting, alongside a great collaborative spirit. The position also offers various benefits, including a learni ...

Backend Engineer (Python/Django) Build Scalable APIs

Stars Arena is seeking a Midlevel Backend Engineer to join their team in Sheffield, United Kingdom. The ideal candidate will have over 3 years of experience developing backend systems and 4+ years with Python and Django, plus strong SQL skills. This full-time role offers a competitive compensation package, focus ...

Java Backend Engineer – Scalable APIs on Azure

JACOBS in Bristol is seeking a Java Software Engineer to design and deliver innovative software solutions across various sectors including transportation and government. This full-time, permanent position offers flexible working arrangements and emphasizes work-life balance. The ideal candidate will ha ...

Flask Backend Engineer (Entry) – Build scalable APIs

Backend Development: Set up and maintain the backend server using Flask to support the application, ensuring scalability, security, and efficiency Seniority level Entry level Employment type Full-time Job function Engineering and ...

Senior Backend Engineer AI Powered, Scalable APIs

Preply is looking for a Senior Engineer to develop and own backend features using Python/Django, enhance customer solutions, and guide team decisions. The role requires expertise in AI tools and troubleshooting, alongside a great collaborative spirit. The position also offers various benefits, including a learni ...

Senior Backend Engineer: AI APIs & Scalable Infra

A leading technology company in Greater London is seeking a Senior Backend Engineer to work on advanced AI systems. The role involves building scalable APIs and improving inference infrastructure while collaborating with AI researchers. The ideal candidate will have strong skills in Python and Go, along with kno ...

Senior Backend Engineer Core Systems & APIs

Wizinc is hiring an Advanced Delivery Architect in Japan. This role focuses on advanced services and requires expertise in delivering complex technical solutions. Manager, Solutions Support Engineering - East US This role involves providing support within Solutions Support Engineering f ...

Backend Engineer Own Production APIs & Systems

A leading technology firm in the UK is seeking an experienced Backend Engineer to design and develop APIs and backend services. You will manage infrastructure involving cloud platforms and ensure production-level software delivery. The ideal candidate has at least 2 years of experience, strong problem-solving sk ...

Senior Software Engineer: APIs, Cloud & Scalable Systems

A leading investment platform company in Manchester is seeking a Senior Software Engineer to join their Operational and Regulatory Technology department. This role involves guiding a cross-functional development team in using Agile methodologies, focusing on high-quality product design and delivery. Candidates s ...

Senior Software Engineer: APIs, Cloud & Scalable Systems

A leading investment platform company in Manchester is seeking a Senior Software Engineer to join their Operational and Regulatory Technology department. This role involves guiding a cross-functional development team in using Agile methodologies, focusing on high-quality product design and delivery. Candidates s ...

Senior Java Backend Engineer: Scalable APIs & CI/CD

A leading technology firm in the United Kingdom is seeking a Senior Software Engineer to design and maintain backend services for transaction-driven platforms. The role requires 6-8+ years of experience in software engineering and expertise in languages like Java or C#. Candidates should possess strong problem-s ...

Backend Engineer III (Java & Spring) for Scalable APIs

LexisNexis Risk Solutions in Oxford is looking for a Software Engineer III specializing in Java and Spring Boot. This role involves designing and improving services for document transformation and semantic enrichment, working in a collaborative environment with technologies like AWS and Kafka. The company promot ...

Senior Backend Engineer Build Scalable APIs for Fans

A tech startup in London is seeking a Senior Software Engineer, Backend to build and maintain the backend services for a football fan platform. The ideal candidate will have strong proficiency in TypeScript and Node.js, with extensive experience in AWS and database management. Responsibilities include designing ...

Backend Engineer – Scalable APIs for 3D Viz (Hybrid)

A leading tech firm in the UK is looking for a Back End Developer to strengthen its engineering team. This role involves building and maintaining the backend services for a visualization platform, ensuring data flows efficiently in a complex ecosystem. Candidates should be passionate about server-side logic and ...

Senior Backend Engineer Scalable APIs & AI Infra (London)

Cavendish Professionals is looking for a Senior Backend Engineer in London to help scale high-growth systems. You will focus on building reliable, secure, and high-performing backend services for new features. The role involves designing APIs, optimizing database performance, and collaborating with cross-functio ...

Senior Python Backend Engineer — Scalable APIs & AI Workflows

A dynamic scale-up in the fintech space is looking for a Senior Python Developer to join their team in Greater London. In this role, you'll implement robust solutions, design REST APIs, and ensure code quality through testing and reviews. The company offers a competitive salary between £70,000 and £95,000, hybri ...

Backend Engineer III (Java & Spring) for Scalable APIs

LexisNexis Risk Solutions in Oxford is looking for a Software Engineer III specializing in Java and Spring Boot. This role involves designing and improving services for document transformation and semantic enrichment, working in a collaborative environment with technologies like AWS and Kafka. The company promot ...

Staff .NET Engineer: Lead Scalable Backend & APIs (Remote)

Ocho People is seeking a Staff Software Engineer specializing in C# / .NET to join a high-performing team in Belfast. This remote-first role offers a salary of £65k-£70k along with a strong overall package, including private medical and pension contributions. The successful candidate will lead the design and dev ...

Senior Backend Engineer Build Scalable APIs for Fans

A tech startup in London is seeking a Senior Software Engineer, Backend to build and maintain the backend services for a football fan platform. The ideal candidate will have strong proficiency in TypeScript and Node.js, with extensive experience in AWS and database management. Responsibilities include designing ...

Remote Backend Engineer Scalable Distributed Systems

A tech company specializing in internet intelligence is seeking a Software Engineer in the UK to build scalable services and APIs that leverage large datasets. The role requires 3+ years of experience in software engineering and knowledge of distributed systems, particularly using Go. This remote position offers ...

Backend Engineer Remote, Scalable Systems & Impact

A circular fashion marketplace is seeking an experienced Backend Software Engineer to join their team in London. You will work with cross-functional teams, ensuring high-quality code is produced for over 1 million daily users. Responsibilities include designing solutions, collaborating with Product Managers and ...

Senior Backend Engineer Scalable AI Systems

A pioneering technology start-up is seeking a Senior Backend Engineer to build and scale its innovative software infrastructure in London. The successful candidate will be responsible for designing robust web applications and managing cloud-based infrastructures on Azure. Essential skills include expertise in Ku ...

Senior Backend Engineer: Scalable Systems & Tools

APPLE is looking for a software engineer to join their documentation engineering team in Greater London. This role focuses on backend technologies, API design, and improving existing systems. Candidates should have experience with web applications, a passion for product development, and strong communication skil ...

Senior Backend Engineer Scalable Distributed Systems

Wise is looking for a Senior Software Engineer I to work on Account Communications in London. You'll improve delivery reliability and evolve platform infrastructure. Ideal candidates will know backend languages like Java, Kotlin, Python, or Go. Strong experience in designing scalable systems is required. Compens ...

Senior Backend Infra Engineer Scalable Systems

A leading software company in Greater London is searching for a Software Engineer to develop scalable and reliable infrastructure systems. You will be engaged in diverse tasks such as building a search ecosystem, contributing to open-source libraries, and crafting distributed systems. The position demands over 6 ...

Senior Backend Engineer — Scalable Systems, Remote

A cybersecurity intelligence platform is seeking a Senior Software Engineer to design, build, and scale core systems for their vulnerability intelligence platform. The role is remote-friendly, with a preference for candidates in Cheltenham, UK. Responsibilities include owning critical services and developing sca ...

Senior Backend Engineer Scalable Systems (Remote)

A dynamic software development firm seeks a Senior Back End Software Engineer to design and maintain high-quality software solutions. Candidates should have over 7 years of experience, particularly with Python and FastAPI, alongside strong skills in AWS and Kubernetes. This role offers remote work flexibility an ...

Senior Backend Engineer Scalable Systems (Remote)

A dynamic software development firm seeks a Senior Back End Software Engineer to design and maintain high-quality software solutions. Candidates should have over 7 years of experience, particularly with Python and FastAPI, alongside strong skills in AWS and Kubernetes. This role offers remote work flexibility an ...

🚀 Boost Your Hiring Chances with Our AI-Powered Tool-Kit

Stand out from thousands of applicants. Use our proven career tools to optimize your applications and land your dream job faster.

To-Do Planner

Organize your job search and personal tasks. All data is confidential.

Open Planner

Wellbeing Center

Access your confidential wellness report and resources to manage job search stress.

Check Wellbeing

Skill Coach

Plan your skill development with O*NET support to stay competitive in your field.

Start Coaching

Outfit Helper

Get AI-powered suggestions on what to wear for your next interview.

Find Outfit

Income Tax Calculator

Plan your finances with our calculator, updated for 2025 tax regulations.

Calculate Tax

Salary Benchmark

Get accurate, AI-supported salary trends to know your worth and negotiate better.

Check Salaries

Interview Practice

Practice for any interview with AI-enabled Q&A sessions. All data is private.

Start Practicing

Interview Predictor

Use our AI-supported tool to predict potential interview questions based on your resume.

Predict Questions

Interview Practice Timer

Use our mock interview trainer to perfect your answers under timed conditions.

Start Timer

Behavioral Mastery

Ace tricky behavioral interviews with our AI-powered practice module.

Master Answers

Question Journal

Confidentially record interview questions you were asked for future reference.

Open Journal

Interview Ace

A comprehensive tool to help you master every aspect of your interviews.

Become an Ace

Q&A Logs

Confidentially track your answers to common questions and refine them over time.

View Logs

Application Planner

Schedule and organize your job applications in one confidential planner.

Open Planner

Cover Letter Tool

Create perfect, tailored cover letters for each application with AI support.

Generate Letter

Resume Score

Get instant feedback on your resume with our NLP-supported analysis tool.

Check My Score

ATS Score

Check your resume's compatibility with Applicant Tracking Systems (ATS).

Check ATS Score

Application Analyzer

Use AI to analyze job descriptions and optimize your application materials.

Analyze Application

Career Visualizer

Confidentially plan and visualize your long-term career path and goals.

Visualize My Career

Offer Genius

Get intelligent insights and strategies to confidently negotiate job offers.

Negotiate Offers

JobFlow

Track your entire job search progress from application to offer with this intelligent tool.

Track My Flow

JobSense

Our intelligent matching engine that provides smart job recommendations.

Get Smart Matches

Networking Toolkit

Tools to build and manage your professional connections. All data is confidential.

Build Network

Professional CV

A classic, O*NET supported template for corporate and professional roles.

Use This Template

Executive CV

A premium, O*NET supported template designed for senior and C-level positions.

Use This Template

Modern CV

A fresh, stylish, O*NET supported template perfect for tech and modern industries.

Use This Template

Creative CV

A visually distinct, O*NET supported template for design and artistic roles.

Use This Template

Minimalist CV

A clean, simple, O*NET supported template that focuses purely on content.

Use This Template

Europass CV

The standard European Union recommended format for wide compatibility.

Use This Template

Student CV

An institution-recommended template perfect for internships and first jobs.

Use This Template

Graduate CV

An institution-recommended template for recent graduates entering the workforce.

Use This Template

Academic CV

The researcher-recommended format for roles in academia and research.

Use This Template

Developer/IT CV

A tech-savvy recommended template to highlight your technical skills.

Use This Template

Skilled Worker CV

A trades-recommended template to showcase hands-on skills and experience.

Use This Template

Monochrome CV

A sleek, black-and-white, O*NET supported template for a professional look.

Use This Template

Art CV

An artist-recommended template that allows your creativity to shine.

Use This Template

Harvard CV

A researcher-recommended template based on the classic Harvard format.

Use This Template

Volunteer Research

Help us improve our platform by joining our community research program.

Join Research

Review Us

Share your experience with our tools to help other job seekers.

Share Experience

Register

Create your free account to save jobs, build your profile, and track applications.

Create Account

Login

Access your dashboard, manage applications, and continue your job search.

Access Your Account

Profile Builder

Create a comprehensive professional profile that attracts recruiters and showcases your skills.

Build Your Profile

View Profile

See your public profile exactly as employers will see it. Make sure it's perfect.

Preview Profile

Bookmarked Jobs

Keep track of all your saved job opportunities in one organized place.

View Saved Jobs

Your Reviews

View and manage all the company reviews you've submitted.

See Your Reviews

Following

Manage the list of companies you follow to stay updated on their new openings.

Manage Following

Find Companies

Discover and research top employers in your country and industry.

Discover Employers

Standalone CV Builder

Use our O*NET supported CV builder to create a professional resume from scratch.

Build Your CV

PDF to DOC (Beta)

Convert your PDF resumes or documents into editable Word (DOC) format.

Convert PDF

DOC to PDF (Beta)

Create universally compatible PDF documents from your Word (DOC) files.

Create PDF

General FAQ

Find answers to common questions about our job site and platform.

Read FAQ

Job Seekers FAQ

Get help and find answers to questions specifically for job seekers.

Get Help

Job Matching

Learn about the technology and algorithms behind how we match you to jobs.

Learn How

Personalized Matching

Discover how we use your profile and activity to provide customized job suggestions.

Learn More

Quick Apply

Understand our fast application process and how to make the most of it.

Learn More

Alert Frequency

Learn how to manage your job alert settings so you get the updates you want.

Manage Settings

Job Alerts Guide

A complete guide to understanding how job alerts work and how to use them effectively.

Read Guide

Resume Matching

Learn how our system matches your resume to job requirements.

Learn More

Ethical Branding

Read our guide to building a professional and ethical personal brand.

Read Guide

Candidate Visibility

Learn how to increase your visibility to recruiters on our platform.

Increase Visibility

Verified Badge

Find out how you can get a verified badge to build trust with employers.

Get Verified

AI ATS Technology

Learn about the advanced AI and ATS technology that powers our platform.

Learn More

ATS Ranking

Understand how Applicant Tracking Systems rank you as an applicant.

Learn More

Semantic Matching

Learn how our AI-powered semantic matching goes beyond keywords.

Learn More

    Backend Engineer Pythonjava Apis Scalable Systems Jobs in United Kingdom Job Search Guide, Trends and Insights