Top Software Engineer Jobs in Belfast

Design and develop secure payment gateway software using object-oriented languages (primarily C#). Implement secure end-to-end transactions, integrate with partners via SOAP/JSON, apply cryptographic techniques and hardware security modules, participate in full SDLC, troubleshoot defects, and improve technical methodologies within a collaborative team.

Develop, test and maintain modern responsive web applications for client onboarding. Collaborate with stakeholders, QA and ops to automate workflows, ensure regulatory compliance, design scalable API-driven platforms, and support production systems with DevOps and cloud practices.

As a Software Engineer, you'll develop software for Ceph and distributed storage, collaborating with a global team to enhance cloud solutions.

Canonical is hiring a Software Engineer to develop features for Kubernetes, focusing on operators and integrations while collaborating in a distributed team.

Backend engineer working on core product pillars within cross-functional teams. Build banking domain features (onboarding, transaction monitoring, ledgers, payment rails) and SaaS features. Collaborate with Product and Design, ship well-tested API-first systems, and optionally progress into people leadership.

Build and optimize Alpaca's algo trading platform, focusing on high-performance brokerage services while leveraging frontend and backend engineering skills.

As a Mid-Level Backend Engineer, you'll enhance the reliability, observability, and scalability of the EVC platform by building API integrations, improving system performance, and strengthening infrastructure.

The Senior Software Engineer will develop systems for compliance in driving operations, work with diverse technologies, and mentor junior team members.

Help train large-language models to write production-grade code by comparing, ranking, repairing, and refactoring AI-generated code, while providing feedback for reinforcement learning.

The AI Software Engineer will train large-language models, compare code snippets, and provide feedback to improve AI-generated code. Requires strong C++ skills and attention to detail.

Help train large-language models to write production-grade code by ranking, repairing, and providing feedback on AI-generated code snippets, with a focus on logical correctness and performance.

Join our team to help train large-language models by evaluating and improving AI-generated code, leveraging your coding and communication skills.

The role involves training large-language models by evaluating and refining code snippets, providing feedback, and maintaining an RLHF pipeline. Candidates need strong Python skills and code review expertise.

As an AI Software Engineer, you'll help train large-language models in Rust by comparing code snippets, repairing AI-generated code, and providing feedback to enhance model learning.

This role involves training large language models to improve code through evaluation and feedback, focusing on correctness, efficiency, and communication.

As an Infrastructure Software Engineer, you will install and deploy Imogen into client cloud environments, lead technical discovery, apply XP practices, and collaborate closely with clients and team members.

The Software Developer will collaborate on new software applications using JavaScript and AgilePoint, providing support, documentation, and managing enhancements.

Lead the architecture of the developer ecosystem at Samsara, focusing on large-scale data streaming systems, serverless computing, and API management. Drive technical vision and mentorship for engineering teams, ensuring consistency and scalability in solutions related to transport, construction, and utilities.

As a Software Engineer (GenAI-Focused), you will enhance the DoiT Cloud Intelligence product, implement features, review code, and improve code health, focusing on AI and cloud technologies for cost optimization and performance.

The role involves creating and automating infrastructure features for data platforms using Python, with a focus on distributed systems and collaboration within a global team.

Join Canonical's OpenStack Engineering team to develop and manage Charmed OpenStack and Ceph, focusing on Python code and infrastructure automation.

The role involves automating OpenSearch operations by developing features in Python, collaborating with an international team, and providing expertise on data platforms.

The role involves collaborating with a distributed team to develop and debug software for Linux, focusing on high-quality code and system-level issues.

As a Software Engineer on the data platform team, you'll automate data platform operations, write Python code, and collaborate on solutions within a distributed team.

Develop and maintain system-level Go code, model data, and design database schema for cloud infrastructures. Collaborate with a distributed team to ensure code quality.