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Motorola Solutions

C# Backend Engineer - Remote, Impactful Safety Tech

NewBe an early applicant UK

Motorola Solutions is hiring an experienced backend developer for a distributed UK team building safety technology. Day to day you design, develop and maintain backend software in C# .NET within an agile environment, collaborating with Product Managers and Test Engineers, working remotely with occasional travel to Motorola offices.

full stack developer for Developer Ecosystems

NewBe an early applicant UK

Full stack developer owning technical strategy and architecture for developer ecosystems (iOS, Web, Infra/Automation) at a serverless real-time infrastructure provider — designing APIs and SDKs, leading client-library initiatives, and mentoring engineers. Core stack is Ruby, TypeScript, and React, plus AI tools like Claude and Cursor.

AI API Automation Design Patterns iOS +7 skills

eFinancialCareers

Full Stack Developer - Assistant Vice President - Citi

NewBe an early applicant HybridUKC-level

A full stack developer (Assistant Vice President) on Citi's Risk Data Team in Northern Ireland, building and maintaining Java/Spring Boot microservices, REST APIs, and SQL-based pipelines for enterprise risk data, while leading and mentoring a team of application developers.

AI Bitbucket CI/CD Cloud Cloud Native +17 skills

Senior Backend Engineer, Customer Ops Platform

NewBe an early applicant HybridUKSenior

Senior backend engineer at iwoca (a London fintech lender) owning end-to-end projects on the Customer Operations Platform — designing and shipping production features that power ops teams, collaborating with Operations, Credit, Accounts and Collections, and applying AI to automate routines. Hybrid work in London.

Hybrid Senior Backend Engineer: Python, AWS & Data Systems

NewBe an early applicant UKSenior

Senior Backend Engineer at Experian (hybrid, London) who designs, builds, and operates production backend APIs and data-focused services, owning the full SDLC and collaborating with engineers, product managers, and data scientists. Core stack: Python and AWS.

Senior Backend Engineer

NewBe an early applicant UKFull-timeSenior

Senior Backend Engineer building production Python/FastAPI services and the agentic AI orchestration layer for an alternative-data and private-market intelligence platform used by VC/PE investors. Day to day: APIs, RAG/tool-use features, PostgreSQL and ClickHouse data work, plus mentoring in a small London startup team.

Agentic AI AI Analytics API ClickHouse +9 skills

Tenth Revolution Group

Staff Backend Engineer

NewBe an early applicant HybridUKStaff

Staff-level backend engineer at a high-growth deep-tech company building the orchestration engine for a next-generation physical automation platform. Heavily hands-on Go work on real-time, streaming and distributed systems while making major technical decisions and leading senior engineers; hybrid with 3 days on-site in London.

AI Automation Distributed Systems Go Rust

130K – 170K £

Senior Backend Engineer

NewBe an early applicant UKSenior

Senior Backend Engineer at CCP Games' Fenris Creations team in London building EVE Vanguard, a new game set in the EVE Online universe (rendered in Unreal Engine 5). Day to day: building AWS cloud infrastructure, CI/CD pipelines, monitoring, and game features/tools in Golang, plus joining a paid on-call rota after launch.

AWS CI/CD Cloud Distributed Systems Event Driven Architecture +3 skills

Emma - we are hiring!

Backend Engineer (Node.js/TypeScript) — Scale FinTech & Own Impact

NewBe an early applicant UK

Backend engineer at Emma, a UK finance app, working directly with the CTO on backend infrastructure, data processing, and feature-rich integrations to scale services for millions of users. Core stack includes TypeScript, JavaScript, Node.js, and React.

JavaScript React TypeScript

Alexander Charles

Senior Python Backend Engineer, London (£85-110,000 p.a.)

NewBe an early applicant UKFull-timeSenior

A senior individual contributor designing and owning the Python backend and AWS infrastructure (Terraform, Kubernetes/EKS) for an early-stage AI governance platform, using AI coding agents like Claude Code across the SDLC. Reports to the Director of Technology in a hybrid London-based team.

AI API Api Design AWS CI/CD +14 skills

85K – 110K £

Senior Backend Engineer – Cross-Border Payments Platform

NewBe an early applicant UKSenior

Senior Backend Engineer at Xe in Bracknell owning end-to-end work on a cross-border payments platform: shaping API design and data models, building and modernizing backend services, and owning production reliability while mentoring engineers and partnering with product, compliance, and operations teams.

API Api Design Data Modeling

Senior Backend Engineer - APIs, Reliability & Production

NewBe an early applicant UKSenior

Senior Backend Engineer at Addition, owning production systems and building robust APIs for a well-established SaaS platform used by thousands of customers globally. The role centers on distributed services, cloud-native deployments, and third-party integrations, with a focus on reliability, observability, performance, and mentoring teammates.

API Cloud Cloud Native Observability SaaS

Backend Engineer, Contacts Team

NewBe an early applicant UK

Backend engineer on Wise's Contacts team in London, building the backend services that let customers add, find and manage payment recipients — from the platform securing millions of bank accounts to search algorithms and local integrations. Core stack: Java, large-scale distributed systems, REST APIs, and relational/non-relational databases.

Agile API Distributed Systems Java REST +2 skills

Backend Engineer

NewBe an early applicant UK

A backend engineer will architect and build the entire backend from scratch at a well-funded pre-Series A AI startup — designing APIs, background workers, data pipelines, and AI agent workflows (LLM orchestration, tool calling, RAG) while working directly with the CTO and founders. Core stack: Python, FastAPI/Django, PostgreSQL, AWS, Redis/Celery/Kafka, and vector databases.

Agentic AI AI API AWS Data Pipelines +12 skills

Backend Engineer - Search And Retrieval

NewBe an early applicant UKFull-time

Depop is hiring a backend engineer for its Search and Retrieval team in London to maintain, scale and improve the search system serving 1M+ daily active users, working with mobile, web and ML/data-science teams. Core stack: Scala/Java/Python, Elasticsearch/OpenSearch, AWS datastores (DynamoDB, Athena), Kafka and PostgreSQL.

Agile AI Athena AWS CI/CD +16 skills

Backend Engineer, Contacts Platform

NewBe an early applicant HybridUK

Backend engineer on Wise's Contacts Team building scalable backend services for managing money-transfer recipients, with end-to-end delivery in an autonomous team. Hybrid role in London (teams also operate in Tallinn), paying £68k–£87.5k plus RSUs and benefits.

Cathcart Associates Group Ltd

Software Engineer – Remote First

NewBe an early applicant RemoteUK

Java software developer building large-scale, business-critical platforms in a highly regulated domain for a UK technology business. Remote-first with a monthly office visit near South Manchester; day-to-day work is Agile/XP (TDD, pairing, CI) on a Java 17/Spring Boot stack with React, AWS serverless, Terraform and Kubernetes.

Agile AWS CI/CD Cloud DevOps +10 skills

Software Engineer

NewBe an early applicant HybridUK

Software engineer at a fast-scaling boutique technical consultancy serving national security, policing and central government. Day to day you design resilient backend services, integrate complex data sources and build analyst tooling, with a backend/cloud focus across Python, Java, C++, C#, Rust and AWS/Azure/Kubernetes.

AWS Azure Cloud C++ C# +6 skills

Senior Java Engineer: Scalable Backend Architect (Hybrid)

NewBe an early applicant UKSenior

Ocho People is hiring a Senior Java Engineer (hybrid, Belfast) for a product-led technology company. The engineer designs and scales core Java backend services on AWS, shapes architecture and engineering standards, and mentors other engineers.

AWS Cloud Cloud Native Java

Junior Java Developer — Greenfield, High-Performance Trading

NewBe an early applicant UKJunior

Junior Java developer at LMAX Group in London working on its high-performance, ultra-low latency trading exchange written in core Java. Day to day involves greenfield projects, pair programming, and performance-critical work across the stack with Kubernetes, Nomad, Docker, Kafka, and MySQL.

Docker Java Kafka Kubernetes MySQL