8,456 Senior Backend jobs
Senior backend engineering roles owning server-side systems and APIs.
Ref. 21417: Desarrollador Backend Java Senior / Híbrido Parque Patricios CABA / 3 vacantes
Senior Java backend developer (3 openings, placed via recruiter ADN RH for a major company): designing and maintaining Spring Boot microservices with Kafka event-driven flows and MongoDB, deployed on OpenShift/AWS with Docker, Kubernetes and CI/CD. Hybrid role based in Parque Patricios, Buenos Aires; bilingual English required.
Senior Backend Software Engineer
Senior backend engineer on Spire's Sat OS team builds the satellite-side operating system and Rust-based file transfer services moving data to and from the nanosatellite fleet, plus ground/cloud (AWS) services with observability and security. Hybrid role in Boulder, CO with at least 3 days per week in office.
Senior Backend Developer – Rust / C++ / Python / Java
About Justera Group Justera Group AB is a leading Swedish IT consulting firm with great experience specializing in building high-performing technology teams and delivering end-to-end IT solutions. Led by dynamic female…
Développeur Java Senior / Expert Backend – Refactoring & Migration PHP vers Java – AWS / GCP (H/F)
Dans le cadre d'un important programme de modernisation de son système d'information, l'un de nos clients grands comptes, recherche un Développeur Java Senior / Expert Backend pour accompagner la refonte et la…
Senior Backend Engineer
Build and maintain scalable backend systems for SumUp’s Bookings product, collaborating with frontend and mobile teams to deliver features using Kotlin, Spring Boot, PostgreSQL, Kafka, and AWS.
Senior Backend Engineer – Data & AI, Hybrid London + Equity
Senior backend engineer at Deducta, a data intelligence platform startup in London, owning end-to-end architecture for reliable, scalable systems and pushing applied AI into the product while collaborating directly with customers. Hybrid role (two office days weekly), £120k base plus equity, visa sponsorship available.
Senior Backend Engineer - Python, ML & AWS (Remote UK)
Senior backend engineer working in Python on AWS, partnering with data scientists and ML engineers to deploy machine-learning models into production for insurance-tech projects. Remote UK-wide role in an international team, with opportunities to mentor junior engineers.
Senior C++ Backend Engineer – Linux & Multithreaded
Senior engineer leading backend development of a multithreaded C++/Linux system for a UK scientific-instrument manufacturer in Oxford: designing APIs for the web GUI, mentoring the team, and working with scientists to install and support instruments. Hybrid on-site/remote, salary up to £75,000.
Senior C# Backend Engineer – .NET Core, FinTech (Newcastle)
Senior C# developer building the backend platform on-site in Newcastle for a FinTech role, working in a small startup-style team and taking ownership of technical projects across the full development lifecycle, using C# and .NET Core.
Senior Endpoint Backend Engineer (Java/Kotlin)
Senior backend engineer on Cisco ThousandEyes' Endpoint team, building and scaling distributed Java/Kotlin backend systems that ingest and store telemetry from endpoint agents, helping customers troubleshoot network issues and analyze end-user experience.
Senior Backend Engineer: Marketing Platforms & Pipelines
Publicis Media is hiring a senior backend engineer to design and evolve backend systems and data pipelines for OneSuite, its marketing platform. The role involves hands-on coding in distributed systems, service architecture, mentoring, and contributing to CI/CD and infrastructure as code.
Senior Backend Engineer - Credit Card Payments
Senior backend engineer on iwoca's Payments Infrastructure team, designing and running the card payments platform behind iwoca's business credit card: real-time payment authorisation, fraud/transaction monitoring, cashback rewards, and ledger migration. Team works mainly in Python with microservices, REST APIs and PostgreSQL.
Senior Backend Engineer – Real-Time Card Payments Platform
Senior backend engineer on iwoca's Payments Infrastructure team, designing and running the real-time payment platform behind the iwoca card — payment approval, fraud analytics, and cashback payouts — owning services from design to production using PostgreSQL, REST APIs, and asynchronous messaging.
Senior Backend Engineer, Endpoint Platform (Java/Kotlin)
Senior backend engineer on Cisco ThousandEyes' Endpoint Platform in London, designing and operating scalable, event-driven Java/Kotlin (Spring Boot) services on Docker, Kubernetes, and AWS to process large network-visibility data sets, with on-call rotations and a strong reliability focus.
Backend engineer for marketing platforms
Senior backend engineer on Publicis Media's OneSuite marketing platform: designs distributed Python/FastAPI services and large-scale data pipelines (PySpark, Databricks, medallion architecture) on AWS/GCP, plus CI/CD, observability, and mentoring other engineers. Office-based in London four days per week.
Senior Backend Java Engineer - Spring Boot & Microservices
Senior backend developer at Omnicom Group (Interpublic) in London building scalable Java Spring Boot microservices and REST APIs backed by MongoDB or MySQL for a large automotive brand client, working across multiple projects on demanding delivery timelines.
Senior Backend Software Engineer - Kalepa for Operations
Senior backend engineer who designs and builds scalable Python/AWS services, async pipelines, external APIs, and LLM-powered document processing for Kalepa's AI-driven insurance operations platform. Day to day: own services and data models, drive architecture, and mentor engineers on a remote-first team.
Senior Backend Developer
We are seeking a highly skilled Senior Backend Developer to join our dynamic team in Karnataka. The ideal candidate will have a strong background in backend development, with a focus on Python, AWS, and SQL. As a…