core java developer jobs in Belfast

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 play a key role in developing tooling for the Citi developer community using a range of technologies including Java and SpringBoot microservices on Linux on OpenShift.

You will provide expert guidance, facilitating their onboarding and maximizing their utilization of the innovative tools and platforms you help create.

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.

You will be working in a Scrum Team of cross-functional skills in tight collaboration practising Agile.

You will be contributing to real decisions about technology to create maintainable solutions for our customers and participating in a highly collaborative group of software engineering professional’s.

Principal Java Developer - Fully Remote The Opportunity Ocho is partnering with a fast-growing, product-led fintech that's building out a brand-new Development Centre from the ground up to deliver an innovative Greenfield platform. As a Principal Java Developer, you'll be hands-on in designing and developing backend, service, and portal systems that power secure, scalable payment processing....

You should have a strong background in Java development with experience in designing and delivering enterprise-grade applications. You’ll combine solid technical capability with collaboration and communication skills to drive successful client outcomes. Essential qualifications:

The Engineering Manager will be responsible for managing the day-to-day operations and output of several core development pods. Key duties involve performance management, goal setting, resource allocation, and maintaining high standards of code quality and system architecture. Successful candidates must demonstrate a proven ability to scale engineering talent and infrastructure while proactively...

You will design, build and maintain high-quality software solutions using Java, Spring Boot and microservices. The work focuses on solving real problems for financial services clients, delivering secure, reliable and scalable systems.

You will work closely with cross-functional teams, contribute to design discussions, and play a key role in delivering production-ready solutions.

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...

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.

Position Sales Development Executive (SDR) Cybersecurity UK Remote, with regular travel to Surrey About us Talanos Cybersecurity is a values led Managed Security Service Provider trusted by organisations to help defend against modern cyber threats. Our core offering is Managed Detection and Response, delivered through our in‑house Security Operations Centre operating 24/7 across the UK, South...

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...

Responsibilities: Market development and relationship establishment: - Deeply integrated into the local business environment. - Systematically search, screen and contact local project development companies, EPC contractors and power trading companies according to the established plan. - Core indicators: Within the first month of employment, you must efficiently complete the on-site visit...

Department: Support Reports To: Application Software Support Manager Location: Remote Salary: £55k - £60k /yr (depending on experience) Contract Type: Permanent – Full Time Role Summary We're looking for an experienced full-stack .NET developer to join our team in a new and exciting role. This role will initially be supporting an array of clients, helping our support team to continue to...

Job Description Discover your future at Citi Working at Citi is far more than just a job. A career with us means joining a team of more than 230,000 dedicated people from around the globe. At Citi, you'll have the opportunity to grow your career, give back to your community and make a real impact. Job Overview We're looking for multiple talented engineers Server Side , to join one of our...

Mid-Level Software Engineer (Java) Exciting new FDI About the Company: Our client is a global leader in digital asset innovation, building technology that bridges traditional finance and the emerging crypto economy. Their mission is to create trusted, high-performance systems that enable institutions to seamlessly integrate digital assets into their portfolios and operations. As part of their...

You will have a truly global reach, which will provide you with new experiences and development opportunities right here in Belfast's iconic Titanic Quarter.

You will need to employ strong communication skills, necessary to effectively produce client solutions. This job description provides a high-level review of the types of work performed.

You will work in an agile software development environment, developing quality and scalable software solutions using leading-edge technologies. Based on business requirements, you will develop code consistent with quality standards and offer support during testing cycles and post-production deployment.

Job Description Discover your future at Citi Working at Citi is far more than just a job. A career with us means joining a team of more than 230,000 dedicated people from around the globe. At Citi, you'll have the opportunity to grow your career, give back to your community and make a real impact. Job Overview About the Department Developer Engineering & Engineering Excellence Tech is a function...

You will work in an agile software development environment, developing quality and scalable software solutions using leading-edge technologies. Based on business requirements, you will develop code consistent with quality standards and offer support during testing cycles and post-production deployment.