Backend Jobs in United Kingdom

Junior Cloud Backend Engineer for Industrial IoT

New UKJunior

CI/CD Cloud C# Data Pipelines .NET +2 skills

Spirax Group in the United Kingdom is seeking a Junior Developer to join the team building the cloud platform behind our connected industrial products. The role offers production code work with guidance from senior…

Bluestorm Limited

Senior Backend Engineer, Digital Health APIs (NodeJS)

Bluestorm Limited is building a cutting-edge digital health platform to revolutionize how businesses provide and pay for digital therapeutics. The platform aims to be the world’s most user-friendly healthcare…

Senior Backend Engineer: Architect Data Pipelines & APIs

Data Pipelines Distributed Systems

Senior Backend Engineer at Publicis Media who designs, builds, and evolves backend systems and data pipelines for the OneSuite platform, tackling distributed systems challenges and mentoring engineers. Work centers on scalable, secure APIs and service architecture supporting Search and Social.

TRIVXA

Senior Backend Engineer - Restaurant Tech (Hybrid)

TRIVXA is seeking a Senior Software Engineer to build and improve the platform, focusing on backend services, APIs, integrations, and databases. You will take ownership of technical decisions and help shape the…

HireHi

Backend Engineer (Go) - Geospatial Microservices

Data Science MongoDB PostgreSQL Redis

Backend engineer at Wheely (posted via HireHi) in London building new Go microservices for geospatial data and migrating away from legacy services, collaborating closely with product, design and data science teams. Core stack: Go, PostgreSQL, MongoDB, Redis and message brokers; OSRM/OpenStreetMap knowledge is a plus.

Backend Engineer: Real-Time, Secure & Scalable with Equity

Agentic AI AWS Azure Cloud C# +3 skills

Backend engineer in London building core platform capabilities for real-time control, security, and observability of agentic systems. Day to day you work with .NET (C#), SQL, and Azure or AWS cloud, collaborating with senior engineers and taking on increasing ownership over time.

Referment

Backend Engineer: Scalable Microservices & Production

Cloud Cloud Native Microservices Test Automation

Referment is partnering with a banking technology company to build cloud-native core banking and payments software. They seek a back-end Software Engineer to develop services behind the platform with emphasis on…

Senior Backend Engineer

Agentic AI AI API Authentication AWS +15 skills

Senior Backend Engineer at Outerlimit, a startup building a decentralised security and authorisation layer for agentic AI. Day to day you design and build high-performance backend services in the request path — enforcement logic, real-time decisioning, OAuth-based identity and integrations — using .NET (C#), SQL, and Azure or AWS, from their London office.

Canaan Partners

Senior Backend Engineer - Payments & Remittance

Ansible API AWS Data Engineering Fintech +15 skills

Senior Backend Engineer at Taptap Send (London) building the unified backend integration layer that connects dozens of third-party payment/remittance providers for a cross-border money-transfer app. Day-to-day is backend-heavy work in Kotlin on AWS with PostgreSQL, Terraform and Ansible, shipping resilient, secure payment flows with Product and Operations.

SJIT

AWS Java Backend Engineer – IaC & Migration

Automation AWS CDK CloudFormation Infrastructure as Code +3 skills

SJIT in London is hiring a Java back-end engineer for a 12-month onsite assignment focused on migrating an AWS-based environment. Day to day, the person delivers scalable Java/Kotlin services, upgrades the stack to JDK17, and automates infrastructure using CloudFormation, CDK, and Terraform.

Bauer Media Outdoor UK

Backend Engineer - Platform Modernization & Real-Time Data

A backend engineer in London helping Bauer Media Outdoor UK sunset a legacy system and move to a modern platform, building scalable real-time features alongside product, UX, and data teams. The work emphasizes design, performance, security, and automated deployments in a hybrid London model.

Pertemps London

Go Backend Engineer — Hybrid (Scale Microservices)

New HybridUK

A Go (GoLang) Backend Engineer role via Pertemps London, working hybrid from Central London. Day to day: designing, building and maintaining scalable backend microservices and APIs for high-volume digital products used by millions, with a focus on reliability, architecture and automated testing.

API Go Test Automation

Medialake Inc

Hybrid Laravel Backend Engineer – Scalable APIs & Growth

New UKMiddle

Medialake Inc. is seeking a Mid-Level Backend Engineer in London to help scale and enhance our media platforms. You will report to the CTO and work with senior developers to deliver robust, production-grade features.…

API Laravel

BPM Tech #BecausePeopleMatter

Cloud Backend Engineer – Node.js/TypeScript

BPM Tech in London is hiring an experienced backend/cloud developer to build scalable, secure and reliable cloud-based applications and APIs. Day to day the role centres on Node.js/TypeScript back-end development and cloud infrastructure, working closely with front-end and wider technology teams.

Harrington Starr

Senior Python Backend Engineer – Greenfield Fintech

API AWS CI/CD Django Docker +4 skills

Join a small, collaborative fintech team to design, build and maintain scalable Python backend applications and REST APIs, taking features from concept to production. Core stack: Python, Django, AWS, Docker, Git and CI/CD, based in London.

Advancedphotonix

Senior Backend Engineer - Real-Time Edge Platform (C++, Docker)

Luna Innovations is seeking a Senior Software Backend Developer in Elstree, London. You will design, develop, and scale backend systems powering our sensing and monitoring platform, handling live data from distributed…

Referment

Senior Backend Engineer, Post-Trade & Reporting

Event Driven Architecture

Referment is hiring a Senior Software Engineer for the post-trade and reporting team. You will build backend services used by operations and fund accounting, combining backend engineering with deep business process…

Senior Backend Engineer: Real-Time, Secure Platform

Agentic AI DevOps Machine Learning Observability

Outerlimit Group is hiring a Senior Backend Engineer (London King's Cross / New York City) to build high-performance backend services for real-time control, security, and observability in its agentic-systems platform. The role owns features end-to-end, mentors peers, and collaborates with frontend, ML, DevOps, and platform teams.

HireHi

backend engineer for marketplace

Kafka Microservices MongoDB NoSQL PostgreSQL +2 skills

Backend engineer at Wheely (premium chauffeur/ride-hailing platform) writing Go microservices, migrating legacy services, and optimizing latency and reliability under heavy load alongside product, design, and data science teams. Office-based in West London four days a week, salary from £90,000 with visa sponsorship.

from 90K £

Backend Engineer

New UKMiddle

Agentic AI AI API Authentication AWS +15 skills

Junior-to-mid-level backend engineer building high-performance services in the critical request path of a security platform that protects agentic AI — handling enforcement logic, real-time decisioning, and OAuth/OIDC identity integrations. Core stack is .NET (C#), SQL, and Azure/AWS, based in London (King's Cross).