Permanent 'Senior Software Engineer' Job Vacancies

351 to 375 of 894 Permanent Senior Software Engineer Jobs

Senior Software Engineer

London Area, United Kingdom
Hybrid/Remote Options
SR2 | Socially Responsible Recruitment | Certified B Corporation™
Senior Software Engineer – Trading Systems | Clean Energy | Remote | €85 + Bonus Ready to use your software skills to power the next generation of clean energy ? 🌍 This leading Greentech scale-up (backed by £250m+ in funding) is building trading and monitoring systems that optimise how clean energy is traded, stored, and delivered across global markets. They’re … open to people within ±3 hours of London – including Portugal, Poland, Serbia, Romania, Moldova, and beyond. 💡 The Tech: Python is the core language, but if you’re a strong engineer from another stack, they’ll give you 3–4 weeks to upskill – they hire for capability, not just code syntax. What you’ll be doing Designing automated trading systems … pipelines using Kafka & TimescaleDB Creating microservices that connect trading platforms and grid operators Building monitoring dashboards for grid stability and energy storage operations What they’re looking for Strong software fundamentals — ideally Python , Rust is a bonus Experience with distributed systems, REST APIs, and microservices Knowledge of Kafka (or similar), PostgreSQL , and time-series data Familiar with Docker, monitoring More ❯
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Senior Software Engineer

City of London, London, United Kingdom
Hybrid/Remote Options
SR2 | Socially Responsible Recruitment | Certified B Corporation™
Senior Software Engineer – Trading Systems | Clean Energy | Remote | €85 + Bonus Ready to use your software skills to power the next generation of clean energy ? 🌍 This leading Greentech scale-up (backed by £250m+ in funding) is building trading and monitoring systems that optimise how clean energy is traded, stored, and delivered across global markets. They’re … open to people within ±3 hours of London – including Portugal, Poland, Serbia, Romania, Moldova, and beyond. 💡 The Tech: Python is the core language, but if you’re a strong engineer from another stack, they’ll give you 3–4 weeks to upskill – they hire for capability, not just code syntax. What you’ll be doing Designing automated trading systems … pipelines using Kafka & TimescaleDB Creating microservices that connect trading platforms and grid operators Building monitoring dashboards for grid stability and energy storage operations What they’re looking for Strong software fundamentals — ideally Python , Rust is a bonus Experience with distributed systems, REST APIs, and microservices Knowledge of Kafka (or similar), PostgreSQL , and time-series data Familiar with Docker, monitoring More ❯
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Senior Software Engineer

England, United Kingdom
Trustpilot, Inc
s still so much exciting work to do. Come join us at the heart of trust! We are growing our engineering teams at Trustpilot and are looking to welcome Senior Software Engineers into the Enterprise + App and the Growth Adoption teams! You will join a cross-functional team with full ownership of our products and codebase, where … ideation to maintenance. A place where you can grow as an individual, while also having an influence (or even lead) the direction of projects and technological choices. As a Senior Software Engineer, you will leverage your extensive knowledge and experience to spearhead the development of our products. You'll be instrumental in the technical direction of projects … to use our platform efficiently and with ease. We make data-driven decisions and love experimenting to test our hypotheses. This team is for you if you're an engineer with a drive to delight your users! To ensure we deliver products that not only meet but exceed customer expectations, our teams collaborate closely with other departments, including product More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Senior Software Engineer

Manchester, England, United Kingdom
Candour
Senior Software Developer - Manchester (Hybird-very flexible) - C#, .Net Core, Angular, Typescript, Azure, Python - £50,000-£70,000 plus fantastic benefits I’m currently hiring for a Senior Software Developer on behalf of a Manchester-based client. They’re open to strong mid-level engineers ready to step up into a senior role too. This More ❯
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Senior Software Engineer

Edinburgh, Midlothian, United Kingdom
Trustpilot, Inc
s still so much exciting work to do. Come join us at the heart of trust! We are growing our engineering teams at Trustpilot and are looking to welcome Senior Software Engineers into the Enterprise + App and the Growth Adoption teams! You will join a cross-functional team with full ownership of our products and codebase, where … ideation to maintenance. A place where you can grow as an individual, while also having an influence (or even lead) the direction of projects and technological choices. As a Senior Software Engineer, you will leverage your extensive knowledge and experience to spearhead the development of our products. You'll be instrumental in the technical direction of projects … to use our platform efficiently and with ease. We make data-driven decisions and love experimenting to test our hypotheses. This team is for you if you're an engineer with a drive to delight your users! To ensure we deliver products that not only meet but exceed customer expectations, our teams collaborate closely with other departments, including product More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Senior Backend Software Engineer – Node.JS

City of London, London, United Kingdom
Experis UK
Senior Backend Software Engineer – Node.JS About the Opportunity An innovative, fast-growing technology company is searching for a Senior Backend Software Engineer to join its core engineering team. This organisation is building next-generation automation and intelligence solutions, and you will play a key role in developing the backend systems that power a high More ❯
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Senior Backend Software Engineer – Node.JS

London Area, United Kingdom
Experis UK
Senior Backend Software Engineer – Node.JS About the Opportunity An innovative, fast-growing technology company is searching for a Senior Backend Software Engineer to join its core engineering team. This organisation is building next-generation automation and intelligence solutions, and you will play a key role in developing the backend systems that power a high More ❯
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Senior Software Engineer

Edinburgh, Midlothian, Scotland, United Kingdom
Hybrid/Remote Options
Cathcart Technology
World-Class Technology company in Edinburgh are looking for a talented Senior Software Engineer (Android , Kotlin) to join one of their core mobile platform squads. Hybrid working , modern tech, and great culture on offer. The company has been growing steadily and is now recognised as a leader in their field . They're scaling multiple engineering squads … Native performance and maintainability. You'll regularly participate in design discussions and technical decisions, with the freedom to propose solutions and help shape the team's approach. As a Senior Engineer, you'll also mentor and support other Engineers , sharing expertise in Kotlin , native Android optimisation, and cross-platform integration. You'll ideally have good experience with most More ❯
Employment Type: Permanent, Work From Home
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Senior Software Engineer

Edinburgh, Scotland, United Kingdom
Hybrid/Remote Options
Cathcart Technology
World-Class Technology company in Edinburgh are looking for a talented Senior Software Engineer (Android/Kotlin) to join one of their core mobile platform squads. Hybrid working , modern tech, and an outstanding culture on offer. The company has been growing steadily and is now recognised as a leader in their field . They’re scaling multiple … Native performance and maintainability. You’ll regularly participate in design discussions and technical decisions, with the freedom to propose solutions and help shape the team’s approach. As a Senior Engineer, you’ll also mentor and support other Engineers , sharing expertise in Kotlin , native Android optimisation, and cross-platform integration. You’ll ideally have good experience with most More ❯
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Senior Software Engineer

Edinburgh, Midlothian, Scotland, United Kingdom
Hybrid/Remote Options
Cathcart Technology
World-Class Technology Company in Edinburgh are looking for a skilled Senior Software Engineer ( iOS ) to join one of their core product engineering squads. Hybrid working, cutting-edge tech, and a brilliant culture on offer. They've been steadily growing for several years and have established themselves as one of the key players within their field - they … regularly involved in design discussions and technical decisions , where you'll have the freedom to suggest solutions and help contribute to the team's wider technical vision. As a Senior Engineer, you'll also play an active role in mentoring others, sharing best practices , and helping strengthen the foundations of the mobile platform. You'll ideally have good More ❯
Employment Type: Permanent, Work From Home
Posted:

Senior Software Engineer

Amsterdam, Noord-Holland, Netherlands
Search X Recruitment B.V
All in the same browser session. Indeed very useful! Tell me more These experts created a co-browsing and collaboration platform that's lightweight, secure, and doesn't require software installation. It lets people interact online in real time by sharing their browser sessions. This means you can browse a website together, see what they see, and even interact … of it like screen sharing, but smarter. You can scroll, click, and fill out forms together, while also chatting via video or voice. All kinds of businesses use their software to improve customer support, sales, and remote collaboration. To keep it all rumbling and bumbling, they need you! What can I do for them? As a Senior Software Engineer, you'll be responsible for developing and maintaining the core sandboxing proxy that powers the products. You'll work on HTTP and WebSocket proxies to enable real-time content rewriting and seamless co-browsing functionality. On the frontend, you'll apply your advanced JavaScript skills to optimize performance, debug minified code, and tackle cross-browser compatibility issues. More ❯
Employment Type: Permanent
Salary: EUR 78,000 - 85,000 Monthly
Posted:

Senior Software Engineer

England, United Kingdom
Hybrid/Remote Options
Stott and May
Senior Software Engineer (C#/.NET) 📍 Remote-first (UK) | 💰 Up to £100k + benefits | 🕓 Permanent We’re supporting a fast-growing fintech fx platform that builds institutional-grade trading and risk-management systems used by global corporates and investment managers. Their engineering teams are scaling out the core trading backbone , a .NET-based microservices environment powering billions … join a small, high-impact engineering group responsible for modernising and extending their event-driven trading architecture - working across 40+ services, solving complex asynchronous communication challenges, and driving clean software design. What you’ll do Design and build distributed microservices in C#/.NET Core Contribute to architecture and design decisions around messaging, scaling, and reliability Develop across the … .NET Core | SQL Server | RabbitMQ/Azure Service Bus | React | Azure + AWS | DDD | Microservices | Async/Multithreading What they’re looking for 5+ years in C#/.NET software engineering Experience with asynchronous, event-driven microservice architectures Confident with queues, concurrency, and threading concepts SQL Server expertise Cloud exposure (Azure or AWS) Understanding of modern engineering principles (testing More ❯
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Senior Software Engineer

Gloucester, Gloucestershire, United Kingdom
Hybrid/Remote Options
Howden Group
have been turning down headhunters for years. Whatever your priorities - work/life balance, career progression, sustainability, volunteering - you'll find like-minded people driving change at Howden. Role : Senior Software Engineer. Team : Web Development. Location : Remote first; with fortnightly to monthly face-to-face in Gloucester. Tech : Blazor, C#, Azure, ADO, HTML, CSS. Moq, NUnit, bUnit, Automapper … of clients across a wide range of product offerings and our development team work on solutions that innovate and put the users' needs at the forefront. Role As a Senior Software Engineer at Howden, you will join one of our agile teams. You will harness the capabilities of Microsoft Azure, Blazor and C# to develop our front … skills. You will influence and encourage best practice. Our environment promotes cross-team learning and collaboration, ensuring you have opportunities to share knowledge and grow alongside your peers.As a senior you will be comfortable and committed to coaching and mentoring less experienced colleagues to help them progress towards senior. You will help drive up standards and quality as well More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Senior Software Engineer

City of London, London, United Kingdom
Understanding Recruitment
Senior Software Engineer (Kotlin) 💰 £80,000 - £95,000 + bonus + excellent Benefits 📍 Hybrid - 2 days onsite in Central London (Zone 1) Are you a JVM engineer curious about Kotlin – or already loving it? Want to solve complex problems that contribute to a greener, more sustainable world? 🌍🌱 Join a high-calibre engineering team building modern, customer More ❯
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Senior Software Engineer

London Area, United Kingdom
Understanding Recruitment
Senior Software Engineer (Kotlin) 💰 £80,000 - £95,000 + bonus + excellent Benefits 📍 Hybrid - 2 days onsite in Central London (Zone 1) Are you a JVM engineer curious about Kotlin – or already loving it? Want to solve complex problems that contribute to a greener, more sustainable world? 🌍🌱 Join a high-calibre engineering team building modern, customer More ❯
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Senior Software Engineer

City Of London, England, United Kingdom
Hybrid/Remote Options
Harrington Starr
Software Engineer London/Hybrid | Perm Role £80,000 - £100,000 Harrington Starr has partnered with a fast-growing fintech that’s transforming how businesses manage foreign exchange and treasury operations. Their technology enables clients to access institutional-grade execution, automate manual workflows, and gain greater transparency across their financial processes. Handling billions in transactions each year, they … continue to expand their product offering and deliver cutting-edge solutions that help clients manage risk more effectively. The Role This is an excellent opportunity for an experienced Software Engineer — ideally with a background in financial technology or FX — to join a high-performing engineering team within a scaling fintech. You’ll be instrumental in developing and enhancing … the company’s core trading and treasury systems, building new features, improving performance, and driving integration across their technology stack. Key Responsibilities Develop and maintain software across the full stack Contribute to architecture and design decisions Support, optimise, and maintain production code Research and integrate new technologies Foster a culture of engineering excellence and continuous improvement Key Requirements 5+ More ❯
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Senior Software Engineer

City of London, London, United Kingdom
Premier Group
Senior Software Developer London – Twice a week in the office £70,000-£90,000 C#/Python/Azure I’m currently working for a well-established tech consultancy business of over 70 years who are based in Central London and looking for a Senior Software Developer , paying up to £90,000 and requiring office working More ❯
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Senior Software Engineer

London Area, United Kingdom
Premier Group
Senior Software Developer London – Twice a week in the office £70,000-£90,000 C#/Python/Azure I’m currently working for a well-established tech consultancy business of over 70 years who are based in Central London and looking for a Senior Software Developer , paying up to £90,000 and requiring office working More ❯
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Senior Software Engineer

belfast, antrim, united kingdom
Cpl
Software Engineer (C#, Java, Server-Side Development) Location: Belfast/Remote (Onsite for the odd get together a few times a month) Employment Type: Full-time, Permanent Salary: Competitive, DOE About The Role We're looking for an experienced Software Engineer with strong C#, Java, and server-side development skills to join a global fintech company. … problem-solving skills Self-motivated, proactive, and comfortable working under pressure Effective communicator and team collaborator Eligible to work full-time in the UK Desirable Skills Experience in a senior or lead engineering role Web client development (HTML, JavaScript, CSS) Exposure to cloud platforms such as AWS or GCP More ❯
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Senior Embedded Software Engineer

Oxford, Oxfordshire, South East, United Kingdom
ZENOVO LTD
Job Title : Senior Embedded Software Engineer Location : Oxford Salary : £55,000 - £70,000 (Depending on Experience) Job Overview: We are seeking an experienced Senior Embedded Software Engineer to join a multidisciplinary design and engineering team developing high-quality, safety-critical embedded systems. The successful candidate will take technical ownership of embedded software development … across multiple concurrent projects, working closely with hardware, systems, and test engineers to deliver robust and compliant solutions. This role will suit a hands-on engineer with strong experience in C/C++, ARM microcontrollers (STM32), and communication protocols such as CANbus and RS-485. Experience within regulated industries—ideally aerospace or similarly safety-critical environments—and familiarity with … DO-178C processes is highly desirable. This is a full-time, on-site role based in Oxford, offering the opportunity to influence software design and development across several innovative platforms. Required Skills & Experience Proven experience (5+ years) developing embedded software in C and C++. Strong working knowledge of ARM Cortex-M (STM32) microcontrollers. Experience with CANbus and RS More ❯
Employment Type: Permanent
Salary: £65,000
Posted:

Senior Software Engineer

Dublin, Ireland
Hybrid/Remote Options
Alldus International Consulting Ltd
Senior Software Developer (Backend) Location: Dublin; Hybrid Type: Permanent Start Date: September Our client, an AI-driven organization who have recently opened a new EU HQ, are hiring a Senior Software Developer to join their backend development team in Dublin. The successful candidate will play a key role in delivering innovative projects and scalable backend solutions … clean, maintainable, and well-tested code following industry standards. Stay current with emerging technologies and recommend improvements to enhance system efficiency and scalability. Skillset 7+ years of experience in software development using Python and C++. Understanding of backend development principles and database management. Strong problem-solving skills and attention to detail. Experience working on AI projects advantageous. Please note More ❯
Employment Type: Permanent
Salary: EUR 125,000 - 150,000 Annual
Posted:

Senior Python Software Engineer

United Kingdom
Hybrid/Remote Options
Burns Sheehan
Senior+ Software Engineer - Python | FastAPI | AWS 💵 £90,000-120,000 + Bonus and Stock 📦 Flexible benefits | 90 day work-from-anywhere perk 💻 Python, FastAPI, gRPC, PostgreSQL, DynamoDB, AWS 📍 Remote first or hybrid (London) InsurTech | high traffic, scalable, event-driven, microservices development We’ve partnered with one of the UK’s most exciting scale-ups in the Insuretech space … over the past few years. Following a successful profitability push, they’re now entering a growth phase and expanding their product offering. As a Lead/Senior+ Software Engineer you'll help drive technical direction and architecture within a product-led squad environment, rotating across business domains. This is an opportunity to gain exposure to cloud-native architecture … across rotating product squads with full domain exposure ✅ Deploying and owning your code in production (AWS EKS) ✅ Collaborating with other product and engineering leads to solve complex problems Senior+ Software Engineer - Python | FastAPI | AWS More ❯
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Senior Software Engineer

Peterborough, England, United Kingdom
The Engage Partnership Recruitment
Senior Software Engineer Peterborough (Hybrid, 3 days per week in office) £70,000 - £75,000 You would be joining a SaaS company that pride themselves the culture they’ve created. It’s very supportive, collaborative and diverse with a unique family feel that is driven from the top by the CEO - something that usually gets lost in … APIs, and event-driven architectures (MSMQ, RabbitMQ, Kafka). Security-first mindset with experience in threat modelling and vulnerability management. This is a super technical role with very complex software so your problem solving skills will be challenged every day. The Perks Salary: Up to £75,000 5% bonus 7% pension 25 days holiday + bank hols (plus buy More ❯
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Senior Software Engineer

City Of London, England, United Kingdom
Harrington Starr
Senior C# Engineer City of London (On-site) Permanent | £90,000 – £120,000 We’re partnered with an innovative proprietary trading firm in the City of London that is hiring a Senior C# Software Engineer . You’ll work on greenfield projects, cutting-edge technology, and play a key part in shaping systems that directly More ❯
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Senior Software Engineer

Leeds, England, United Kingdom
Hybrid/Remote Options
Fruition Group
Senior Software Engineer Full Stack - Ruby on Rails, React Up to £85k Fully Remote - must be UK based A fast-growing sports tech company building high-performance, data-driven products for a rapidly expanding global user base are searching for a Senior Fullstack Engineer. As part of a cross-functional Product Team , you'll work closely More ❯
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Senior Software Engineer
10th Percentile
£60,000
25th Percentile
£65,000
Median
£80,000
75th Percentile
£105,000
90th Percentile
£122,500