15 of 15 Permanent Java Developer Jobs in Belfast

Java Developer Location: Belfast (Hybrid) Salary: Up to £50,000 Join a forward-thinking consultancy helping clients across industries like Defence, Financial Services, Health, and Government. We are looking for an experienced Java Developer to design and implement innovative solutions, bringing expertise across the full software … development lifecycle. Key Responsibilities: Design scalable solutions using Java OOP principles and leverage Java 8 features like streams and functional interfaces. Develop robust web applications with MVC frameworks and create RESTful APIs. Implement automated testing using JUnit, Mockito, Cucumber, Selenium, and Postman. Build and manage CI/CD … Postgres, RDS, and more. Optimise performance and ensure quality using SonarQube, Kafka, and ELK stack. What Were Looking For: 2+ years of hands-on Java development experience with leadership capabilities. Strong expertise in Java, multi-threading, web application development, and testing frameworks. Familiarity with DevOps tools, cloud solutions More ❯

platform and will include moving from Oracle to big data. The role is active development with no support. We are looking for experienced Bigdata Java/Spark Developers to join the project. This is a multi-years project. Role: Translate application storyboards and use cases into functional applications Design … build, and maintain efficient, reusable, and reliable Java code Ensure the best possible performance, quality, and responsiveness of the applications Identify bottlenecks and bugs, and devise solutions to these problems Develop high performance & low latency components to run Spark clusters Interpreting functional requirements into design approaches that can be … team Processing of data using Hive, Impala & HBASE Performing analysis of large data sets and derive insight Requirements: 5 to 7 Years of strong Java experience with Java 1.8 or higher version Strong Core Java & Multithreading working experience Experience in Big data technologies like HDFS, Hive, HBASE More ❯

Senior Java Developer FinTech | Belfast City Centre | Hybrid (23 Days Onsite) Permanent | Competitive Salary + Benefits Are you a seasoned Java Developer with a background in FinTech, looking to take the next step in your career? Were working with a cutting-edge company in the heart … of Belfast City Centre thats building robust, scalable financial solutionsand theyre on the lookout for a Senior Java Developer to join their growing team. The Role: As a key member of the engineering team, youll drive the design and development of high-performance APIs and cloud-native services. … shaping architecture decisions, mentoring junior developers, and collaborating in a fast-paced Agile environment. What Youll Be Doing: Developing secure and scalable APIs using Java (Spring Boot) Designing containerised services with Docker and deploying via Kubernetes Working cross-functionally with Product and DevOps teams Driving best practices in software More ❯

to be working with an innovative, rapidly scaling technology organisation whose products are used globally across many industries in their search for a Principal Java Developer. The Principal Java Engineer will join an existing, scaling software engineering team to take on responsibility for the a specific function of … role which will encompass development, architecture and the mentoring and coaching of junior software engineers This is a fantastic opportunity for an experienced Principal Java Engineer to join a small, yet hugely successful team headed up an incredibly passionate Head of Engineering. You'll get the chance to work … to scale significantly in 2025 and beyond. The Role: The Principal Engineer will lead the design and architecture of complex, high-scale applications using Java and AWS. Yiu'll set engineering best practices and drive adoption of cloud-native solutions. You'll collaborate with cross-functional teams (interfacing with More ❯

Exclusive Ocho partnership- Golang/Java developers Hybrid roles (***New Cloud Security company that recently set up in NI with 10 staff hired earlier in the year ! ) We are currently seeking to appoint a number of Golang AND Java Developers to the team. In this role you'll … with major cloud platforms (AWS, GCP, Azure) and leverages advanced technologies including Go, Kubernetes, Docker, eBPF, and more. The Role: As a Golang/Java Developer with our client, you'll play a pivotal role in developing and securing their ground breaking products. We're seeking individuals who … understanding of operating system internals, Linux networking, and file systems. 3+ years of experience in software engineering using high-level programming languages (e.g., Golang, Java, C, Python). Proficiency with cloud platforms (AWS, GCP, Azure). Experience building data-intensive systems such as databases, event systems, or messaging systems. More ❯

Core Java Developer (AVP) Belfast Overview Citi is a world-leading global bank. We have approximately 200 million customer accounts and a presence in more than 160 countries and jurisdictions worldwide. We provide consumers, corporations, governments, and institutions with a broad range of financial products and services, including … second line support, including out of hours, for the processes and components you develop. Key Skills and Experience required: Primary development expertise in core Java development, including knowledge of collections, IO, multi-threading and generic You will be a highly motivated self-starter who is comfortable taking on new … will have experience working with build tools such as Gradle and Maven. You will be comfortable working with Linux and be familiar with standard developer tooling, such as Git, BitBucket/GitHub, Jira, Confluence, etc. Bonus points for: Experience or familiarity working on Equities trading platform. What we'll More ❯

Do you dream in Java? Do you get excited about distributed systems? Does the idea of tackling greenfield projects make you excited? The Gig: Were on a mission to build a next-levelplatforma mix of shiny new greenfield work and some exciting enhancements to existing systems. No boring support … workjust pure, hands-on development withcutting-edge tech. The Tech Stack: - Java (11+) Youve got strong, commercial, hands-on experience - Spark Ideally, youve dabbled (or mastered) - Finance/Banking experience? Cool, but not a deal-breaker The Perks: - A modern Belfast office Close to great food, good coffee, and … working together -Top-tier clients Youll be working on high-impact projects with some of the biggest names in finance & tech If you love Java, Big Data, and solving real-world challenges, then this is your chance to make an impact while working with a fantastic, high-performance team. More ❯

Senior Java/Kotlin Developer - Hybrid role - 2 days in the office - £65-71k + market leading package. About the Company: Our client is building a greenfield Vendor Management System (VMS) designed to transform how contingent workforces are managed. This is a rare opportunity to join a … ll work in a modern, containerized microservices architecture built using Kotlin, Spring Boot, MongoDB, and GCP. The Role: We're looking for a Senior Java/Kotlin Developer with a strong backend focus and a passion for clean architecture, scalability, and developer experience. You'll be a … and 1:1 support * Contribute to the engineering culture by improving processes and raising the quality bar Essential Criteria: * 5+ years of experience with Java, Kotlin, or C++ in a production environment * Hands-on experience building microservices within a service-oriented architecture * Practical knowledge of CI/CD pipelines More ❯

Description Are you a technologist who has a hunger to dig deep and get involved in providing first-class solutions to real-world problems? Java Software Engineer - Belfast First Derivative is a people-first company. We are powered by our ever-growing teams of specialist problem-solvers and process … responsible for the ownership of key projects, working across all phases of the SDLC, including analysis, design, development, testing and deployment. As a Senior Developer, you will be accountable for issuing technical guidance to Junior Developers, including overseeing their deliverables and providing architectural guidance. You will work on cutting … a variety of projects across Greenfield, Front Office, Data/Cloud Migration, Regulatory Reporting, Trade Reconciliation and more! Our main tech stack includes: Core Java (version 8 or higher) Spring Framework/Spring Boot Object Oriented design principles and patterns CI/CD tools such as Jenkins Microservices architecture More ❯

Java/Kotlin Developer - Equities Derivatives Strategic Pre-Trade Technology - AVP - (Hybrid) Overview Citi is a world-leading global bank. We have approximately 200 million customer accounts and a presence in more than 160 countries and jurisdictions worldwide. We provide consumers, corporations, governments, and institutions with a broad … in Belfast, specializing in building and supporting the development of derivatives pricing platform to be used by the global Equity Derivatives business. As a developer you will work together with product development teams, end users in Sales and Trading and members of the development team to provide solutions that … efficiency, decrease operational risk, and enable the business to expand and automate their current processes. Role Overview: This role is specifically for a Strong Java/Kotlin Developer within Equity Derivatives strategic pre-trade technology team in Belfast. This is a great opportunity for a self-driven, strong More ❯

priorities quickly as circumstances dictate Demonstrated leadership and project management skills Consistently demonstrates clear and concise written and verbal communication Required Skills: Expertise in Java development, with a strong focus on Spring Boot and REST API architecture Strong experience with Oracle PL/SQL and database performance analysis and More ❯

engage with colleagues and teams in the UK, North America, and India. Key responsibilities: Collaborating with the architecture team to define best practice in Java and Hadoop development paradigms including documentation and system monitoring. Challenging and helping to direct our technical roadmap and proposing the adoption of new technology … data analysts to define logical data structures. Encouraging self-learning among the team. Essential Skills & Qualifications: A confident engineer with an authoritative knowledge of Java and Hadoop including HDFS, Hive, and Spark. Comfortable working with large data volumes and able to demonstrate a firm understanding of logical data structures More ❯

to back office, providing great business benefit. A senior development position responsible for accomplishing results through hands-on development/bug fixes of our Java application. The overall objective of this role is to drive applications development through programming activities. Responsibilities Participate in design sessions with the development team … applications. Ensure applications meet performance and scalability requirements. Stay up to date with the latest technologies and industry trends. Mandatory Skills Experience as a Java software developer. This will be tested at interview. Messaging Systems experience (Kafka, Nats, Solace, TiBCo, RabbitMQ, etc.). Experience working with SQL and databases … such as Oracle, SQL Server, Hadoop, etc. Agile SCRUM. Experience with Java Multithreading/Concurrency, Web Services (SOAP/REST), DB2 Database, JMS, MQ, NDM, SFTP. Acquainted with industry best practices and standards, software development tools, and techniques. Experience in developing distributed systems. Experience in the use of Containers More ❯

roots, this organisation partners with a range of well-known clients while also operating their own internal product arm. They're currently seeking skilled Java Developers to join their close-knit, collaborative team. This client is a leader in digital innovation, dedicated to leveraging technology to deliver meaningful outcomes … no two projects are ever the same, and every day brings fresh opportunities to learn and grow. The Ideal Candidate Strong commercial experience with Java and Spring Boot Knowledge of AWS and container orchestration tools such as Kubernetes is highly desirable Exposure to front-end frameworks like or Vue.js … reasonable adjustment to be considered at any stage of the recruitment process, please contact us and we will endeavour to facilitate the request. Skills: java fullstack react springboot hybrid spring full-stack More ❯

office to back office providing great business benefit. A development position responsible for accomplishing results through hands-on development/bug fixes of our Java application. The overall objective of this role is to drive applications development through programming activities. Responsibilities Participate in design sessions with the development team … applications. Ensure applications meet performance and scalability requirements. Stay up to date with the latest technologies and industry trends. Mandatory Skills Experience as a Java software developer. This will be tested at interview. Messaging Systems experience (Kafka, Nats, Solace, TiBCo, RabbitMQ, etc.). Experience working with SQL and databases … such as Oracle, SQL Server, Hadoop, etc. Agile SCRUM. Experience with Java Multithreading/Concurrency, Web Services (SOAP/REST), DB2 Database, JMS, MQ, NDM, SFTP. Acquainted with industry best practices and standards, software development tools, and techniques. Experience in developing distributed systems. Experience in the use of Containers More ❯