Tech jobs

Senior DevOps Engineer

Agile Argo CD Automation AWS Bash +30 skills

Senior DevOps Engineer at TP ICAP's ICAP Energy in Belfast, designing and automating secure, scalable AWS and on-premise infrastructure. Day to day: building CI/CD pipelines and IaC (CDK/Terraform), running Kubernetes/container platforms, and improving observability and production resilience.

Tesco

Senior Python Backend Engineer: End-to-End & AI-Driven

Tesco is hiring a Software Development Engineer III (Senior Python Backend Engineer) in London to own end-to-end backend delivery with startup-style urgency — building scalable services in Python, experimenting rapidly, and collaborating with enterprise architects and API teams.

The Sage Group plc

NewBe an early applicant HybridUKSenior

Senior Scala Backend Engineer - Hybrid, Enterprise Cloud

Cloud Observability Scala

Senior backend engineer on Sage's HCM Localisation team, building scalable cloud services in Scala (Play Framework, Pekko) that power complex HR workflows, while driving platform modernisation with best-practice engineering and observability. Hybrid: 3 days weekly in Newcastle or London.

Python Software Foundation

Remote Senior Python Backend Engineer

API Api Design DevOps Python

Senior Python backend engineer at Webbyfox, a UK-based Python web development agency, who designs, builds and scales backend services end to end — architecture, API design, deployment and monitoring — while mentoring engineers and working with product, data and DevOps teams.

Client Server Limited

NewBe an early applicant HybridUK

Remote Backend Engineer - Distributed Systems (Go/Node)

AI Event Driven Architecture Node.js

Design and build distributed, real-time messaging systems in Go and Node.js on a scalable platform serving developers and businesses worldwide, working with Pub/Sub, event-driven architecture, and AI-enabled infrastructure. Remote or hybrid from the London area, with equity and a competitive package.

Software Directory

Senior Backend Engineer - Go, Distributed Systems, Remote

AWS Cassandra Docker GCP Kafka +2 skills

Senior Backend Engineer at Monzo (London office or UK remote) building and supporting the bank's in-house banking platform, collaborating across squads in Core Banking, Payments, and Security. Core stack is Go with distributed systems tech including Cassandra, Kafka, Kubernetes, Docker, and AWS/GCP.

Devconnectplatform

NewBe an early applicant RemoteUKPart-timeSenior

Senior Backend Engineer — Remote, Flexible Hours

AWS Cassandra Distributed Systems GCP Java +3 skills

Senior Backend Engineer at Monzo building parts of its UK banking platform with Go, Java or Scala, plus Cassandra and Kafka, deployed on Kubernetes and AWS/GCP. UK-based remote role with flexible hours, collaborating with product, design and ops to deliver robust, scalable services.

Addepar1

Senior Backend Engineer — Portfolio Data (Europe)

Senior backend engineer at Addepar maintaining and evolving the API services behind its financial/portfolio data platform, scaling them for the European market, modeling complex financial products, and ensuring regulatory compliance. Core work is backend API development.

Software Directory

Senior Backend Engineer

Open 1d UKSenior

AI AWS Cassandra Distributed Systems Docker +8 skills

Senior backend engineer at Monzo, a UK digital bank, joining a cross-disciplinary squad to build and support parts of its in-house banking platform. Day-to-day is backend product work using Go, Cassandra, Kafka, Kubernetes and AWS/GCP; role is London-based or remote anywhere in the UK.

105K – 135K £

Searchability NS&D

NewBe an early applicant HybridUKSenior

Security-Cleared Python Backend Engineer | ML Ready

AI API Cloud Docker Kubernetes +2 skills

Senior Python backend engineer in London (hybrid, 2-4 days on-site) building scalable backend services that power AI/ML solutions: productionising ML models with data scientists, building robust APIs, and deploying to cloud platforms with Docker and Kubernetes. Active SC or DV security clearance is required.

SpaceX Super Intelligence

NewBe an early applicant UK

Backend Engineer for Global Payments & AI Platforms

Backend engineer on the X Money team building a global payments network for hundreds of millions of users. Day to day you design backend services, microservices, and data models for scalability, security, and reliability, collaborating across payments, fraud detection, and compliance in a startup-like environment.

AI Microservices

Square One Resources

Senior Java Backend Engineer — IAM & Cloud (Hybrid)

AWS Azure Cloud GCP IAM +4 skills

Senior backend engineer building high-scale Java (Spring Boot) services for a regulated financial services environment in Essex, focused on secure IAM (OAuth/Azure) and high-volume transactional workloads using TDD. Hybrid role requiring 4 days per week in the Essex office, with mentoring of junior engineers.

83zero Ltd

NewBe an early applicant UKContract

Python Backend Engineer - Wireshark Automation

API Automation Linux Python REST +1 skills

Python backend developer on a 6-month London contract, turning manual packet capture into a 'Wireshark-as-a-Service' self-service web app. Day to day: automating network sniffing and packet capture with Python, REST APIs and Linux servers, working with Wireshark/TShark and PCAP workflows.

Tantilium

NewBe an early applicant UK

Backend Engineer

Agentic AI AI API Argo CD AWS +22 skills

Backend engineer building the Go services behind Tantilium Cloud Runner — APIs, Kubernetes controllers and event pipelines that provision AWS/GCP clusters, deploy apps via GitOps and run AI agents for incident response. Stack: Go (Chi), PostgreSQL (Bun), RabbitMQ, client-go, Prometheus/Grafana.

Searchability NS&D

NewBe an early applicant HybridUKContract

eDV-Cleared Java Backend Engineer (On-Site Cheltenham)

Agile API Docker Java Kubernetes +3 skills

24-month contract for a Java backend developer with eDV (Enhanced DV) clearance, based in Cheltenham with three days per week on-site, designing and maintaining secure Java services for a UK government environment. Core stack is Java, microservices and RESTful APIs in Agile teams; Spring Boot, Docker and Kubernetes are desirable.

up to 700 £ / day

Tantilium

NewBe an early applicant UK

Go Backend Engineer - Cloud Runner & Kubernetes

API Cloud Kubernetes PostgreSQL RabbitMQ

Build Go backend services for Tantilium Cloud Runner, a platform that provisions Kubernetes clusters and ships applications. You design APIs, controllers, and event pipelines using Chi, Bun on PostgreSQL, RabbitMQ, and Kubernetes client-go, while keeping the system maintainable as it grows.

Response Informatics Limited.

NewBe an early applicant UKContract

Java Full Stack Developer

AI CI/CD CockroachDB Java Microservices +2 skills

Senior contract role in London for a Java full-stack developer with 8+ years' experience: designing scalable applications with Java, Spring Boot and microservices, applying AI-assisted and Spec-Driven Development, maintaining CI/CD pipelines (Jules), managing GKP/FID setup, and integrating databases such as CockroachDB and MongoDB.

Love2shop

Senior Java Engineer - Hybrid, Mentoring & Platform Growth

Cloud Java Salesforce Spring

Senior Java Engineer building Love2shop's web and mobile digital platforms using Java/Spring in a payments and loyalty domain. You'll collaborate with Product and Design, mentor colleagues, and support a Salesforce-based transformation and cloud initiatives, working hybrid with weekly on-site days in the Liverpool office.

Searchability NS&D

NewBe an early applicant UKFull-timeSenior

Senior Full-Stack Java Engineer – Hybrid, Bristol