core java developer jobs in Cardiff

C# Developer / Full Stack Engineer (.Net Core JavaScript) St Albans / WFH to £100k Do you have expertise with C# .Net backend development combined with JavaScript skills? You could be progressing your career in a senior hands-on role at a technology driven trading company that invest in Sports betting markets with a flat structure where you will get your voice heard and can make a real impact...

You will work across cutting‑edge platforms including Payment Networks, Digital Banking, Emerging Payments, and highly scalable data and analytics environments built on Google Cloud Platform, Data Lakes and Power BI. This role involves modern engineering, integration, testing, and hands‑on development within a high‑impact digital landscape.

Our client is a mission-led consultancy delivering secure, modern software solutions that support the UK Government and Defence sector. They’re growing fast and looking for talented Java Developers who want to make an impact on projects that matter. You’ll work in a high-trust, agile environment, building scalable systems and progressive applications that directly contribute to national security...

Our client is a fast-growing SaaS company building web and mobile products used worldwide for organising, engagement, and field operations. They’re small, sharp, and engineering-led — shipping fast, solving real problems, and working in a genuinely collaborative environment. They’re now adding a fourth A-player Full-Stack Developer to their tight 3-person engineering team. If you want real...

About Prighter Prighter is a fast-growing LegalTech company building productised services and SaaS solutions for compliance with data protection as well as AI & digital governance regulations. With the mission to enable companies around the world to comply with regulatory requirements for their digital business, our services and SaaS solutions guide our global clients through the increasingly...

React Native Developer (Tech for Good) (Social Education Learning) Remote Work 3-month Voluntary Work Experience Opportunity London Are you a React Native developer with mobile app experience, and a desire to put your skills toward positive social impact? Want hands-on experience designing and building intuitive mobile interfaces for learners around the world? If yes, this could be the...

You must speak, write and be able to understand fluent English. - Deep knowledge and regular usage of Firebase suite, especially Firestore. - Strong proficiency in TypeScript and modern JavaScript (ES6+).

You must enjoy constantly learning and researching to improve your level of expertise.

UX/UI + Frontend Developer Thursday Salary: £40-£50K Thursday is a singles IRL events company that organises singles events, trips, dinners, activities, education and media. We're building technology to scale our operations and enhance the experience for our members. We value equality and inclusion as core principles - our diverse audience deserves technology that serves everyone well, and...

Job Title Development Executive Contract Type Permanent c. 30 hours per week (negotiable with postholder) Salary £30,000 - £34,000 FTE Location Remote (home based), but able to attend meetings and events throughout the UK as required. Reports to Director of Development Key Relationships BCA Staff; BCA Board; BCA Committees; Corporate Partners; Colleges delivering chiropractic...

BRAND NEW ROLE - Senior Exec Level - Marine Geo Director of Business Development - Geotechnical Engineering & Geoscience Consulting About the Company Our client are a growing offshore geotechnical services and consulting unit, focused on delivering high-quality, technically robust solutions across the offshore, nearshore, and onshore environments. While offshore geotechnical investigations...

You will be working with and have the support of an experienced Operational team to provide the necessary support. This core role will focus on identifying, sourcing, developing and securing new business opportunities with customers who are importing and exporting goods across border via Road Freight.

🚀 About Webigence and Spark Travel Webigence has 25 years of experience crafting UX‑first, often highly complex software. Our engineers pair forward‑thinking agile practices with an obsession for intuitive design, shipping products that feel effortless even when the logic underneath is anything but. Alongside a handful of long‑standing third‑party clients, we’re scaling our own SaaS...

About Sirion Sirion is the world’s leading AI–native Contract Lifecyle Management (CLM) platform, transforming the end-to-end contracting journey for enterprises. With Agentic AI at the core, the platform’s extraction, conversational search, and AI-enhanced negotiation capabilities have revolutionized contracting across Fortune 500 companies like IBM, Coca Cola, Citi and GE. With more than 800...

Software Engineer – PHP & Golang Fully Remote – Within UK PHP / Golang / JavaScript £60,000-£65,000 I’ve recently partnered with a leading Prop-Tech business in London who are looking to add a Software Engineer to their team who specialises in PHP & Golang! The company have seen rapid success over the past 10 years and have built an advanced platform used by their expanding portfolio of...

Job Description About Us Emérique & Partners is a fast-growing, award-winning recruitment firm, recognized for its deep expertise within Financial Services. We operate across highly specialized niches including Banking, Insurance & Asset Management through niche recruitments: Actuarial Science, Quantitative Finance, Risk management, Compliance, Audit and Risk. Since our creation, we have built...

Our client, a top-tier global law firm, is seeking a Business Development Manager to support key global clients within its Private Capital Industry Group. This role sits within the Global Clients & Industries team and focuses on driving revenue, strengthening strategic client relationships and executing go-to-market initiatives across an international platform. Key Responsibilities: - Act as...

Want to take your sales career to the next level? Look no further than memoryBlue, the fastest-growing sales development company in B2B tech. With clear pathways to help you climb the ladder and plenty of opportunities for growth, we offer careers, not just jobs. In fact, we promoted 50 team members in just an 18-month timeframe. Want to take your sales career to the next level? Look no further...

You will be working with a modern microservices tech stack, using Go / Golang. There are challenges around scalability and robustness, you'll be continually learning and progressing your career within a supportive Agile team environment.

Want to take your sales career to the next level? Look no further than memoryBlue, the fastest-growing sales development company in B2B tech. With clear pathways to help you climb the ladder and plenty of opportunities for growth, we offer careers, not just jobs. In fact, we promoted 50 team members in just an 18-month timeframe. Who are we? At memoryBlue, we’re more than just a sales...

C++ Developer / Backend Software Engineer Cambridge / WFH to £75k Are you a C++ technologist looking for an opportunity to progress your career whilst working on complex and interesting systems with continual learning opportunities? You could be joining a market leading software house that's remote access product is used by hundreds of millions of users worldwide. What's in it for you: -...