26 to 50 of 91 Senior Developer Jobs in East Sussex

Job Title: Senior Business Central Developer/Architect Location: Northampton (Hybrid – 3 days in-office per week) Employment Type: Full-time, Permanent Salary: Up to 85k Overview: A leading Microsoft Dynamics 365 Business Central partner is seeking an experienced Senior BC Developer/Architect to join More ❯

Senior Full Stack Developer - UK Based Only 💻 React | TypeScript | Python | Django 💸 Up to £75,000 🌍 Fully Remote (UK-Based) | Occasional Team Meetups Are you a seasoned Full Stack Developer who enjoys taking technical ownership and driving architectural decisions? A fast-growing tech company is hiring a Senior Full Stack Developer to join their collaborative team working on cutting-edge, data-driven platforms. You’ll play a pivotal role in both hands-on development and leading best practices across the engineering function. 🔧 The Stack: Frontend: React, TypeScript Backend: Python, Django DevOps/Infra: CI/CD More ❯

Job Title: Senior Java Developer Location: Primarily Remote (with meet ups twice a month) Salary: £80,000 - £90,000 (Flexible based on experience) Are you an experienced Java developer looking for a new challenge? Do you thrive in an environment where you can take ownership of key … exciting? Then this may be for you: Mostyn Chase are conducting an exclusive search for a well-established fintech in the payments space for Senior Java Developers to join this growing and dynamic team. The roles are designed to bring in developers who can work independently, solve complex problems … building scalable and secure web applications, and participating in the entire software lifecycle—from gathering requirements to deploying solutions. If you are an experienced developer who enjoys working autonomously and is comfortable working in a flexible, remote-first environment, this could be the perfect opportunity for you. The ideal More ❯

Job Title: Senior Salesforce Developer Location: Remote (UK-based) with occasional client site visits Salary: £85,000 - £100,000 An established digital consultancy is seeking a Senior Salesforce Developer to join a high-performing UK-based engineering team. This is a hands-on, client-facing role … Experience with version control (Git/SVN) and DevOps pipelines. - Solid grasp of Agile methodologies. - Confident communicator with stakeholder-facing experience. Preferred: - Salesforce Platform Developer I/II - Salesforce Platform App Builder - Salesforce Administrator - JavaScript Developer I More ❯

Senior Java/Golang Developer - Salary: £75,000 - £85,000 + Package - Hybrid role - 2-3 days in the Belfast office. About the Company This is an opportunity to join a small, high-performing engineering team building a network automation platform used across global financial services. With a … on solving complex, meaningful problems, this is a role for passionate technologists who value autonomy and variety in their work. The Role: As a Senior Java or Golang Developer, you'll join the Operations Engineering team and take a lead in designing and implementing backend services that underpin More ❯

Senior Salesforce Developer £60,000 per annum Central London (2 days/week onsite, remainder remote) Full time hours, permanent contract Professional/Membership Body Key Responsibilities: Lead the development, improvement, and support of a major organisation's Salesforce platform Drive adoption and optimise the use of Salesforce … the in-house Salesforce technical expert, overseeing implementation, integration, and support Define and design Salesforce application and data architecture Line manage the Junior Salesforce Developer and Salesforce Administrator Collaborate with Membership, Exams, Events, and third parties to ensure smooth CRM operations Lead on system upgrades, enhancements, and testing to … and Digital planning and resource allocation Champion collaborative working across internal teams for seamless delivery of systems and services Key requirements: Salesforce Administrator and Developer certifications (essential) 2+ years' experience in Salesforce project development Strong experience with Apex, Lightning Web Components, SOQL, Flows, and Salesforce APIs Proven ability to More ❯

Senior Looker BI Developer (Fixed-Term Contract) - Marketing Analytics Location: Flexible within the UK Contract Duration: 12 Months Fixed-Term Anticipated End Date: December 2025 Salary: £60,000 - £80,000 per annum The Opportunity We're recruiting on behalf of a prominent global technology company , a leader in … BI solutions primarily within Looker , translating complex marketing data into actionable insights. A key part of your role will be mentoring a junior LookML developer . This is a hands-on role focused on empowering data-driven decision-making. Responsibilities Design, develop, and maintain Looker dashboards, reports, and explorations. … provide user training. Contribute to BI development standards and stay updated on Looker/GCP trends. Qualifications and Experience Extensive experience as a BI Developer/Analytics Engineer, specialising in Looker (dashboarding, advanced LookML). Proven experience mentoring junior developers in LookML/BI development. Strong SQL proficiency with More ❯

Senior Frontend Developer Ready to solve a $600B problem affecting millions of lives across Africa? I'm partnering with a rapidly scaling fintech startup that's revolutionizing cross-border payments for African businesses. They're tackling the massive challenge of expensive, slow international transactions that currently cost merchants More ❯

My client, a reputable cyber security vendor with a global presence and excellent product recognition, is seeking a Senior Backend PHP Developer to join their team. This is a permanent role and this client is open to a fully remote candidate based in the UK or someone based … in London who is open to hybrid work. Your Responsibilities : As Senior Backend PHP Developer, you will be working closely with the Development Team and Infrastructure Team to work on their tech stack and projects. What you'll be doing: • Design, develop, and maintain scalable, secure, and high … backend development, cloud computing, and DevOps to enhance system design and team capabilities. What You Should Bring? We're looking for a hands-on Senior Backend Developer with DevOps experience, possessing the following: • Proven expertise (5+ years) in backend development with proficiency in PHP and experience in Python More ❯

Do you have 6+ years commercial experience working as a Full Stack Developer using Java and Vue/React/Angular? Are you looking for a new challenge where you can capitalise on your proactiveness, taking initiative and ownership of your work? Senior Full Stack Developer – World … the world in nearly 200 countries. As they continue to grow, both as a business and in reputation, they are looking for a talented Senior Full Stack Developer to join the team and contribute to the greenfield development of various new projects as well as maintaining and improving … current products. As a Senior Full Stack Developer, you must have experience with: Java Spring Vue ideally on the frontend They are open to React or Angular , as long as you are willing to learn and work in Vue SQL Understanding of the whole Software Development Life Cycle More ❯

Senior Openlink Endur developer - Commodity Trading - London **open to contractors as well as perm** Cititec Talent has partnered with a global commodity trading firm about to embark on an exciting multi-year greenfield program to implement Openlink Endur. They are looking for multiple Senior Developers with hands More ❯

Senior Full Stack Developer - .NET, Blazor Fully remote working (UK based ) Salary paying £65,000-£70,000 Our client in the retail space are a market leader in providing warehousing, manufacturing and logistic services across the UK. This is a great opportunity to work on a migration piece … Blazor as they look to roll out a new system. They are also undergoing a migration to .NET 9. They are looking for a Senior Full Stack Developer who has experience with .NET Framework/Core and Blazor. Tech Stack: C#, .NET Core, SQL, Blazor, Rest APIs, ASP.NET … role. Salary is paying £65,000-£70,000 Working hours: 9am-5pm Monday-Friday Please apply now if you are interested in hearing more Senior Full Stack Developer - .NET, Blazor More ❯

Capital, Apexon now has a global presence. The ideal candidate is a self-motivated, multi-tasker, and demonstrated team-player. You will be a senior developer responsible for the development of new software products and enhancements to existing products. You should excel in working with large-scale applications More ❯

Senior Software Developer (.Net 8/Azure/React/Blazor/SQL) £60,000 - £65,000 Basic + Bonus | Liverpool (Hybrid) The role here is all about modern tech. Within a company that thrives on innovation. A Liverpool city centre based company. Their platform uses data driven … developing both internal and external facing systems. Following a modern approach to CI/CD and Infrastructure as Code (IaC) Skills Needed Skilled .Net Developer - modern with .Net Core SQL Database Experience with Event Driven Design (like Rabbit MQ) Cloud would be ideal - they use Azure The work is More ❯

Senior Full Stack C# .NET DeveloperFully Remote (UK Residents Only) About WebX Systems At WebX, we specialise in technical publishing and content management solutions for the aerospace and defence sectors worldwide. Our flagship products— UltraCSDB®, UltraAuthorTM, UltraXMLTM , and UltraPortalTM —are used globally and combine proven legacy systems with cutting … us on our journey to become the global leader in aerospace and defence content management. Role Overview We're looking for a proactive, experienced Senior Full Stack .NET Developer to help evolve our product suite. You’ll work across both legacy Windows desktop applications and modern web-based … Blazor, Minimal APIs Entity Framework, Redis, RabbitMQ Aspire (.NET), Cloud-Native development Key Responsibilities Project Leadership – Lead projects from concept to deployment, collaborating with senior developers and the technical director to design and implement architectural and technical solutions. Full Stack Development – Maintain and enhance both legacy desktop applications and More ❯

Job Description: Senior Full Stack Developer at everyLIFE The Senior Full Stack Developer at everyLIFE Technologies will come with 5+ years of experience in commercial full stack development. They will be passionate not just about writing code but contributing to a project which makes a difference. … tests Awareness and passion for working in an agile environment Experience of modern web and server-side RESTful development Experience with Git Experience of developer testing approaches Experience of build and Continuous Integration pipelines and tools Experience of TDD and BDD You may have: Knowledge of NestJS framework Experience More ❯

Senior Ruby on Rails Developer (Remote - UK) | £60,000–£70,000+ DOE I am working with a client in the Ecommerce/SaaS space who is rapidly scaling and growing, who is looking for a Senior Ruby Developer who is passionate about working with the latest … Rails frontend. About the client: They are a growing startup looking for a Senior Ruby Developer who’s excited to wear multiple hats and grow with them. You’ll play a key role in shaping their product, working closely with end users, and delivering features that make a More ❯

Senior Android Developer - Outside of IR-35 I am on the search for a Senior Android Engineer to join a trusted client in the iGaming space. This is an urgent contract role & they are looking to kick off IV's next week. Kotlin, Compose, Geo location (Bonus … Per day Please can you apply with your up to date CV, I will follow up if your CV aligns with my clients needs. Senior Android Developer - Outside of IR More ❯

Senior Python Engineer – Cloud & Data Orchestration 📍 Hybrid (1–2 days/week in office) | 💼 £140k+ Package | 🕵️‍♂️ Security-Cleared or Security Clearable required Location: London | Sector: Intelligence, Analytics & Secure Data | Process: 3 stages Our client is a mission-driven consultancy delivering high-impact intelligence, research, and technical services to governments … modernisation Collaborating with a multidisciplinary group including intelligence analysts, researchers, and domain specialists Supporting clients working in highly sensitive and secure environments Ideal Background Senior/Lead/Founding Software Engineer, startup/hands on CTO, or Lead Architect experience, ideally in cloud-native or high-scale data environments More ❯

We are seeking a skilled and experienced Senior React Developer to join a high-performing data and digital engineering team on a strategic project for a leading UK bank. This role is delivered via a top-tier consultancy and involves the development of enterprise-grade web applications within More ❯

Senior Frontend Engineer Fully Remote (EU) SalesTech, SaaS £80,000 p/a + Equity We’re working with a high-growth, product-led SaaS company in the SalesTech space that’s looking for a Senior Frontend Engineer with a passion for architecture, scale, and smart collaboration. This … features with impact, and thrives in a cross-functional product team. You are not afraid to challenge the surrounding structure to bring the entire developer experience/product up to the next level. What you’ll bring as the Senior Front End Engineer: 6+ years in software development More ❯

A global commodity trading organisation that is investing heavily in technology to support its growing trading operations are offering the opportunity for a Senior OutSystems Developer to join their growing OutSystems team. This is a fantastic opportunity for an experienced developer to take ownership of critical application … performance, and scalability across the platform Play a key role in the ongoing digital transformation of trading workflows The Requirements: Proven experience as a developer working with OutSystems, ideally within financial services, trading, or energy sectors Strong hands-on knowledge of SQL, particularly around stored procedures, performance tuning, and … to £85k with flexibility to £90k for the right candidate. The wider package includes bonus, pension, Bupa healthcare and more. If you’re a Senior OutSystems Developer seeking a technically challenging role with real business impact, this is an outstanding opportunity to work in a front-office aligned More ❯

If this sounds like an environment that you believe could work for you then read on to find out more. The role: As a Senior Go Developer at Tyk, you will play a key role in designing and building compelling solutions for our Dashboard and API Gateway products. … ll collaborate closely with cross-functional teams to deliver high-quality, efficient solutions, while championing continuous improvement across our software engineering lifecycle. As a Senior Go Developer you will be passionate about backend development, distributed systems, and driving engineering excellence. Here’s what you’ll be responsible for More ❯

Senior Frontend Engineer | FinTech/DeFi | Up to £120,000 p/a + Bonus + Liquid Equity 💻 Senior Frontend Engineer - Up to £120,000 per annum 🚀Rising player in Decentralised Finance (DeFi) 💰Up to £120,000 p/a + 20% Bonus + Liquid Equity ⭐Stack: Typescript … to take advantage of the digital transformation and establish themselves as a leader in the Decentralised Finance sector. They are looking to hire a Senior React Engineer to join their team and work closely with the Founder as they grow from 13 to 30+. They are looking for Frontend More ❯

Senior React Native Engineer With a global team of 300+ employees across ten countries, this software suite supports the operational core of many international federations. The platform is a flagship mobile-first product designed to enhance engagement, communication, and scheduling. My client are seeking a pragmatic and experienced Senior … empower users and solve real problems. This opportunity sits at the intersection of elite platform optimsation and cutting-edge technology. If you're a senior React Native engineer ready to make meaningful impact in a product-led environment we'd love to hear from you. Apply via the Link More ❯