126 to 141 of 141 Java Jobs in Northern Ireland

Principal Engineer (Java | Microservices | Event-Driven Systems) Belfast/Hybrid | Scale-Up | Leadership Role | £85,000 - £95,000 plus bonus We’re working with a fast-growing technology scale-up that’s building next-generation, real-time software products used across complex, high-impact environments. They’re now hiring a Principal Java Engineer to take ownership of their backend evolution … as they transition from a legacy monolith to a scalable, event-driven microservices architecture. 🔍 What You’ll Do Architect and build high-performance Java-based microservices Lead the technical transformation of core systems from monolith to distributed architecture Work cross-functionally with product, design, and platform teams to translate business goals into scalable backend solutions Mentor engineers, shape coding standards … and champion technical excellence across the team Balance short-term delivery with long-term platform stability and innovation ✅ What You Bring 6–10+ years of hands-on Java development experience Deep expertise in building and deploying microservices within event-driven systems Strong understanding of distributed systems, system design, and cloud-first infrastructure Experience modernizing legacy platforms Proven ability to lead More ❯

and designing for cost efficiency—experience in regulated domains Deep knowledge of distributed and event-driven systems, like Kafka, AWS SNS/SQS, and development in languages such as Java and Python. Strong understanding of data-centric architecture principles, including data governance, data Lakehouse, and AI-driven platforms. Excellent communication skills and the ability to influence at all levels—from More ❯

The Role As a Data Engineer , you will: Design and deploy production data pipelines from ingestion to consumption within a big data architecture. Work with technologies such as Python, Java, Scala, Spark, and SQL to extract, clean, transform, and integrate data. Build scalable solutions using AWS services like EMR, Glue, Redshift, Kinesis, Lambda, and DynamoDB. Process large volumes of structured More ❯

/Windows platforms, with a focus on experience in: - Oracle SQL troubleshooting skills - query building and data extraction for verification of issues with trade data flow and processing. - Understanding java apps to read log files and troubleshoot application flow issues. - Strong communication skills are required candidate typically works with internal teams for support/escalation and new initiatives. Principal Accountabilities More ❯

solutions for customers/clients located in different time zones Experience of implementing security standards that meet privacy requirements for web/portal/mobile applications Other valuable technologies: Java, REST-based API, object-oriented concepts, and GIT Experience with Pega Rules Process Commander Experience with different types of Agile project delivery So that's us. Thanks for taking the More ❯

pay for your certifications across our Partner Network: UK & Ireland’s premier Microsoft, AWS & Oracle partner , and many more... The last 4-weeks will specialise in a specific technology - Java, .NET, DevOps, AWS Cloud etc Upon graduating from our academy, we guarantee you an exclusive offer of permanent employment where you can put your new skills and qualifications into practice More ❯

pay for your certifications across our Partner Network: UK & Ireland’s premier Microsoft, AWS & Oracle partner , and many more... The last 4-weeks will specialise in a specific technology - Java, .NET, DevOps, AWS Cloud etc Upon graduating from our academy, we guarantee you an exclusive offer of permanent employment where you can put your new skills and qualifications into practice More ❯

ability to influence technical decisions in a collaborative manner by questioning and considering implications Essential Skills Be able to demonstrate 5+ Years of designing and implementing enterprise software frameworks. (Java etc ) 5+ Years Influencing architectural standards based on engineering learnings. 5+ years working in a product driven model . 5+ years writing Java based software products. 10+ years practical coding More ❯

or cloud-based environment Excellent ability to translate customer needs into actionable technical requirements Experience managing multiple concurrent implementation projects with enterprise customers Knowledge of APIs & software development (Python, Java), data pipelines, and enterprise integration architectures Proven success in enterprise software implementations, balancing technical execution with customer business needs Experience leading technical enablement, training, or technical workshops Strong problem-solving More ❯

team members about blockchain features Qualifications At least 2-4 years of experience as a blockchain developer Strong background in software development Advanced proficiency in programming languages like C++, Java, JavaScript, or C# Full-Stack development experience Knowledge of cryptography and blockchain protocols Advanced analytical and problem-solving skills Superb organizational skills and keen attention to detail Excellent communication and More ❯

Android Developer, certain essential professional experiences and skills are typically required: Extensive experience in Kotlin is crucial, as it's the primary language for modern Android development. Knowledge of Java is also beneficial for maintaining and updating legacy code. Deep familiarity with the Android SDK and its components, including different versions and how to deal with different screen sizes. Experience More ❯

on end-to-end delivery. You’ll be building UIs from the ground up with React, Next.js, and Ag-Grid . You’ll also contribute to backend functionality using Java , integrating complex workflows with real-time data feeds. What they’re looking for: Extensive React/Next.js development in production environments - Strong Frontend bias UI development for complex, data-heavy … systems — ideally in trading or finance Have solid Java fundamentals Front Office experience is essential Knowledge of real-time communications Familiarity with trading concepts is a big plus Why this role? High-performance environment #J-18808-Ljbffr More ❯

You will take an active role in the hiring process and conducting engineering interviews. Expectations: 3+ years of experience in building Android applications at scale Kotlin and/or Java experience Accomplished in scaling Android architecture 3+ years of experience with Android development tools like Android Studio Knowledge of the Android SDK and AndroidX Interested in writing Kotlin Workplace & Diversity More ❯

for tasks. Maintain a focus on customer needs and satisfaction, setting high standards for quality and quantity. Desired Skills and Experience: Dynamics 365 Accreditations Proficiency in C#, ASP.Net, Python, Java, JSON Experience with enterprise CRM systems Proven track record in delivering complex projects Strong customer engagement and management skills If the above opportunity is of interest, and you have the More ❯

degree or equivalent experience in a relevant field. 10+ years in application and enterprise architecture roles. Proven experience designing SaaS-based systems and external-facing APIs. Proficiency in .NET, Java, or similar languages, with a broad technical skillset spanning frontend and backend development. Strong understanding of systems integration, middleware, caching, databases, and web performance optimisation. Experience within the payments space More ❯

build vs. buy decisions. What you will need: 10 plus years of experience in Software design and coding experience with external API platforms. Experience with C#/.NET or Java Experience with System Integration Experience identifying and resolving performance and scalability issues for both web-based applications and databases. Payments experience would be a huge plus Find out more If More ❯