1,176 to 1,200 of 1,334 Senior Software Engineer Jobs

Senior Software Engineer – Python

Location
Greater London, England, United Kingdom
Work with data and platform engineers to develop efficient processes for accessing and handling increasing volumes of data. Collaborate with internal stakeholders to define software requirements and validate features in a fast-paced, iterative environment driven by quality. Other duties may be assigned. Required Knowledge and Experience …/or Scrum environments, along with experience developing SaaS features that leverage LLM agents is preferred. Familiarity with using LLM agents to accelerate software development, as well as experience or knowledge in machine learning, would be advantageous. Experience with infrastructure-as-code tools, such as Terraform, would also ...

Senior Software Engineer — AI-Driven SaaS & APIs

Location
Manchester, England, United Kingdom
Finance 247 is seeking a Senior Full Stack Developer with a backend-leaning focus to build APIs and services using Node, SQL databases, and AI-enhanced workflows. You’ll work on the ArcaneAI CRM platform, scale systems on Cloudflare’s platform, and shape architecture from day one. You should ...

Senior Software Engineer: AI/ML, Full-Stack, Equity, Hybrid

Location
Greater London, England, United Kingdom
Iterum Trading Limited is seeking a Mid‐Level to Senior Full Stack Developer in London to help build Iterum IQ, focusing on AI/ML‐driven features. You’ll work closely with the Head of Product and a Fractional CTO, shaping architecture and mentoring junior developers. The role offers ...

Senior Software Engineer (Full-Stack) New London, UK

Location
Greater London, England, United Kingdom
information to automatically select optimal forecasting algorithms and improve accuracy by over 30%. You’ll work on sophisticated Ruby on Rails and React software that turns diverse financial data into clear analysis, giving customers sharp insight and forecasting through intuitive dashboards. This is a critical platform moving over … build-it-you-run-it), which includes participating in the on-call pager rotation What You’ll Bring: 4-8 years of professional software development experience, ideally including full-stack work with a backend lean Strong SQL fundamentals; hands-on experience with PostgreSQL ideal Comfortable working within large, sophisticated ...

Senior Software Engineer — AI HR Platform (TypeScript)

Location
Greater London, England, United Kingdom
Humaans is seeking a frontend engineer to help shape the product from concept to release. You will write frontend TypeScript in React, build end-to-end features, fix bugs, and expand our integration marketplace while shaping the technical architecture. You’ll collaborate closely with product teams and designers, contributing ...

Senior Software Engineer - PHP

Location
Greater London, England, United Kingdom
experience with Yii2 or willing to learn Experience with frontend development(Typescript, React) Experience designing scalable backend systems with a strong grasp of software architecture and system design principles Strong PostgreSQL experience: schema design, indexing, query optimization, performance tuning Experience designing APIs and service integrations Solid Git workflows, code ...

Senior Software Engineer, C/FICCO Data

Location
Greater London, England, United Kingdom
financial markets, especially in delta one, store of value, and/or FICC options trading Experience with Linux-based, concurrent, high-throughput, low-latency software systems Experience with pipeline orchestration frameworks (e.g. Airflow, Dagster) Experience with streaming platforms (e.g. Kafka), data lake platforms (e.g. Delta Lake, Apache Iceberg ...

Senior Software Engineer — Infra Agent Systems UK

Location
United Kingdom
About the Role Together AI runs one of the largest GPU fleets in the world. The Infra Agent Systems team builds the software systems that power and automate that infrastructure. We develop production AI agents that diagnose hardware failures, investigate incidents, correlate signals across the fleet, and automate operational … production impact. There’s an enormous amount to build, learn, and shape as we define the future of autonomous infrastructure. responsible for delivering the software but also for operating and supporting it in production. Why this Role You’ll work on two hard problems at the same time: making ...

Senior Software Engineer

Location
Belfast City District, Northern Ireland, United Kingdom
individuals who want to know they can trust their devices with their most sensitive information – without sacrificing privacy. Role Overview As a Full Stack Engineer at iVerify, you’ll help build and scale the platform that enables organizations to protect their mobile fleets and detect advanced mobile threats. … deliver features that empower organizations to visualize, manage, and respond to mobile security risks across thousands of devices. We’re looking for an engineer who thrives in a fast-paced, mission-driven environment, enjoys working across the stack, and is passionate about building elegant, secure, and scalable systems that ...

Senior Software Engineer - AI-Driven Networking & Cloud

Location
Greater London, England, United Kingdom
Cisco ThousandEyes is seeking an experienced software engineering leader to drive production-grade applications and large-scale distributed systems. You will partner with product and engineering leaders across ThousandEyes to evolve technologies and ship new features. You will help bring ThousandEyes tech into Cisco wireless and security portfolios ...

Senior Lead Software Engineer- iOS Platform- JPM Personal Investing

Location
Greater London, England, United Kingdom
hands of our customers. We're looking for people who have a curious mindset, thrive in collaborative squads, and are passionate about building quality software that has a big impact in a rapidly changing environment. By their nature, our people are also solution-oriented, commercially savvy and have … decisions, backed by 150 years of trusted heritage. Experience a culture that thrives on smart ideas, teamwork, and continuous improvement. Job Summary: As a Senior iOS Engineer in the Personal Investing Engineering team, you will design, build, and maintain the iOS SDLC toolchain, ensuring compliance and reliability. ...

Senior Software Engineer (Front End)

Location
United Kingdom
RESPONSIBILITIES: Work with UX Designers to ensure the products meet the standards the end user is looking for Translate requirements into elegant, scalable software solutions Work closely with Backend developers on full stack solutions Write maintainable, robust code, with test coverage all to best practices Drive our automation testing ...

Senior Software Engineer | API Enterprise

Location
Greater London, England, United Kingdom
stakeholder teams to make DeepL's API the obvious and safe choice for global enterprises. We are shifting gears. We are moving from "Software-First" to "Product-First." We don't hire engineers to just close tickets or optimize algorithms in isolation. We hire Missionaries — builders who obsess over ...

Senior Software Engineer - London

Location
Greater London, England, United Kingdom
agents yourself. Packaged and run workloads in Docker and on virtual machines. Used Temporal, Dask, FastAPI, PostgreSQL, Grafana or Datadog. Automated web or desktop software with Playwright, Selenium or a browser extension you wrote. Set standards other engineers follow, through code review, design review or mentoring. ...

Senior Software Engineer - Enterprise Systems & APIs

Location
United Kingdom
Belhati in the United Kingdom is seeking an experienced software developer to design, build, test, and maintain enterprise‐level applications. You will translate requirements into scalable code, ensure security and performance, and collaborate with analysts, project managers, clients and cross‐functional teams. A strong background in SDLC, APIs, databases … object‐oriented design and mentoring junior developers is essential as you help deliver high‐quality software and stay current with #J-18808-Ljbffr ...

Senior Software Engineer - Digital Workplace (Remote)

Location
United Kingdom
Canonical is a leading provider of open source software and operating systems for the global enterprise. The role focuses on building internal systems with the same high standards as Canonical's public products, delivering observable, well-documented software for a distributed team. You will design and deliver systems ...

Senior Software Engineer - Wise Platform - API Experience

Hiring Organisation
Wise
Location
London, UK
Employment Type
Full-time
With over 13 million customers and growing fast, we are building an entirely new network for the world's money. Wise Platform enables banks, software companies, and large enterprises to leverage Wise's global infrastructure. Through our public APIs and backend infrastructure, our partners can offer their customers world … Wise visit Wise.Jobs. Keep up to date with life at Wise by following us on LinkedIn and Instagram. SummaryType: Full-timeFunction: EngineeringExperience level: Mid-Senior LevelIndustry: Financial Services ...

Senior Software Engineer II

Location
Greater London, England, United Kingdom
hard for a mission that matters at a company where you matter. Your Impact Axon’s Real Time Operations (RTO) division builds situational awareness software that helps emergency responders manage life-and-death incidents. You will lead the design and scale-out of the cloud control plane that provisions … multi-tenancy. Lead cross-org technical strategy: set engineering standards (APIs, versioning, deprecation, rollout, testing), create long-range roadmaps, and mentor/level-up senior engineers across cloud and device teams. Partner with device teams on transport and protocol choices, schema and API contracts, edge–cloud sync models, staged ...

Senior Software Engineer, AI & Analytics Platform

Location
Greater London, England, United Kingdom
London Stock Exchange Group’s LSEG Data & Analytics team is seeking passionate software engineers from mid-level to lead to build enterprise-grade analytics platforms. You will work across AI-powered data solutions, cloud deployments, and scalable services that power markets worldwide. We value curiosity, collaboration, and continuous learning ...

Founding Senior Software Engineer: AI-Driven Scale

Location
United Kingdom
Clipbook is seeking a backend-focused engineer in the United Kingdom to join a small, high-impact team building and evolving core systems used by 200+ clients. You’ll own feature development end-to-end, design scalable services, and help shape the platform’s evolution. You’ll work ...

Senior Software Engineer I - Backend (Java)

Hiring Organisation
Rightmove
Location
London, UK
Employment Type
Full-time
billion minutes on Rightmove each month and our website and apps receive over 140 million visits per month. To support our mission, we need software engineers with vision and passion to deliver innovative and exciting solutions for our internal users, working on in house applications and microservices integrated with … committed to sharing knowledge, fostering team ownership, and contributing to a psychologically safe and inclusive environment. Our Approach to AIAt Rightmove, we believe software and product are ultimately people problems, and everything we build aims to improve the lives of others. We see AI as a helpful ...

Senior Software Engineer

Location
Greater London, England, United Kingdom
team called - Kraken Utilities. Over the last 3 years we have built this team from scratch to re-architect, design, and develop our Kraken software platform to solve complex industry wide problems within the water and broadband sectors (such as customer experience & water leak detection). The Kraken Utilities … diligent and thoughtful. Experience with the following: Python Django (or equiv. web framework) Domain modelling HTTP and REST APIs Writing robust and fault-tolerant software Celery and async processing Postgres Plus experience in the following would be a bonus: AWS Terraform, Packer, Consul React and Redux At Kraken ...

Senior Software Engineer II, Endpoint - ThousandEyes

Location
Greater London, England, United Kingdom
segment as well as becoming part of the fabric of Cisco’s wireless, security and collaboration systems. We are a small team where every engineer is hands-on and has a voice in where the product and technology goes. This creates a rare opportunity for you to work with ...

Senior Software Engineer - Quantum-Safe & AI-Driven Cloud

Location
Belfast City District, Northern Ireland, United Kingdom
Arqit Limited, a global pioneer in quantum-safe encryption, seeks engineers to join a fast-moving product team. You will contribute to scalable enterprise software, mentor peers, and apply AI tooling across design to deployment. The role involves customer interaction, agile delivery, and ensuring system resilience. Candidates should have ...

Senior Software Engineer — Multimodal AI Platform

Location
Greater London, England, United Kingdom
Adarga is seeking an experienced generalist engineer to advance the design and implementation of our multimodal data fusion platform. You will take components from design to production, contribute to architectural decisions, and ship, working with our Chief Architect and a growing team across data ingestion, transformation pipelines, semantic data ...