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Top Software Engineer Jobs in Belfast

337+ Job Results
25 Days Ago
Belfast, Northern Ireland
Remote
416 Employees
3-5 Years of Experience
416 Employees
3-5 Years of Experience
Software
Looking for a Senior Full Stack Engineer to join our team at Dotmatics. Responsibilities include developing and maintaining software products, collaborating with stakeholders, front-end development using Javascript and React, writing automated tests, and mentoring developers.
25 Days Ago
Belfast, Northern Ireland
Remote
715 Employees
3-5 Years of Experience
715 Employees
3-5 Years of Experience
Artificial Intelligence • Software • Analytics
Join an existing Scrum team in the AppSec division, developing application protection technology for over 1 billion devices. Obfuscate code and inject security mechanisms to defend against reverse engineering and data theft.
3 Days Ago
Belfast, Northern Ireland
Remote
6,766 Employees
1-3 Years of Experience
6,766 Employees
1-3 Years of Experience
Software
Seeking a Staff Software Engineer with a passion for machine learning operations and data engineering to join the ML Data team at HubSpot. Responsibilities include leading and innovating in machine learning data infrastructure, providing strategic direction, collaborative problem-solving, and mentorship. Looking for candidates with a track record in AI/ML system projects, ability to collaborate across the organization, industry best practices, and commitment to data quality, security, and privacy.
3 Days Ago
Belfast, Northern Ireland
Remote
10,000 Employees
5-7 Years of Experience
10,000 Employees
5-7 Years of Experience
Information Technology • Marketing Tech • Social Media
Join the Global Security Products group at GoDaddy as a Senior Software Engineer to work on rebuilding products and migrating to AWS. Collaborate with cross-functional teams, solve technical challenges, mentor team members, and ensure high-quality, scalable solutions. Experience with backend RESTful API development and expertise in Go, Python, PHP, or Java is required.
Top Benefits:
401-K
Adoption Assistance
Child Care Benefits
+24 More
3 Days Ago
Belfast, Northern Ireland
1,168 Employees
7+ Years of Experience
1,168 Employees
7+ Years of Experience
Big Data • Cloud • Software • Database
Senior Software Engineer responsible for implementing functionality, improving software architecture, and maintaining reliable operation of services at Fivetran. Required skills include Java programming, experience in distributed systems, cloud platforms, and problem-solving abilities.
Top Benefits:
401-K
401-K Matching
Adoption Assistance
+54 More
3 Days Ago
Belfast, Northern Ireland
Hybrid
1,422 Employees
5-7 Years of Experience
1,422 Employees
5-7 Years of Experience
Software
Join the Bazaarvoice engineering team to work on the Product Catalog platform, managing data for over 2.2 billion client products and powering syndication networks, social commerce, and smarter shopping experiences. Required skills include Java, Scala, Javascript, Typescript, AWS, GCP, Azure, NoSQL databases, CI/CD, DevOps, Agile, Git, and more.
Top Benefits:
401-K
Company Outings
Dental Insurance
+17 More
16 Days Ago
Belfast, Northern Ireland
Remote
132 Employees
3-5 Years of Experience
132 Employees
3-5 Years of Experience
Fintech • Information Technology
As a Senior Software Engineer at Alpaca, you will be responsible for building and scaling systems for identity verification, risk evaluation, and account management. You will work on a global financial identity service and design reliable architectures. Your role will involve contributing to core systems, implementing backend services, and collaborating with other teams to enhance system interactions and overall software quality.
3 Days Ago
Belfast, Northern Ireland
Remote
6,766 Employees
7+ Years of Experience
6,766 Employees
7+ Years of Experience
Software
Senior Software Engineer role at HubSpot focusing on building tools and components to drive product adoption and enhance user experience. Responsibilities include writing production code, collaborating with cross-functional teams, and implementing user experiments. Strong frontend development and user-centric mindset are key qualifications.
3 Days Ago
Belfast, Northern Ireland
1,354 Employees
7+ Years of Experience
1,354 Employees
7+ Years of Experience
Gaming • eSports
The Senior Software Engineer - Frontend at EFG (ESL FACEIT Group) is responsible for building large-scale applications using React, Redux, and Next.js. They should have experience with WebSockets, real-time messaging, and a passion for video games and esports. Ideal candidates will have knowledge of Webpack, testing frameworks, optimization strategies, web best practices, and scalable architecture systems.
8 Days Ago
Belfast, Northern Ireland
Remote
79 Employees
7+ Years of Experience
79 Employees
7+ Years of Experience
Information Technology • Marketing Tech • Sales • Consulting
SciLeads is seeking an experienced Senior Software Engineer with a strong background in software development and data engineering to lead technical initiatives at a fast-growing SaaS company focused on market and sales intelligence for the life science and pharmaceutical industry.
3 Days Ago
Belfast, Northern Ireland
Remote
151 Employees
7+ Years of Experience
151 Employees
7+ Years of Experience
Healthtech
Senior Software Engineer - Front End role at Doccla, responsible for building the Virtual Ward and clinician portal to improve clinical outcomes for patients across the UK. Requires self-motivation, experience with Elm language, and strong UX/UI design skills. Experience with web components and quality management system IEC-62304 is a plus.
17 Days Ago
Belfast, Northern Ireland
880 Employees
5-7 Years of Experience
880 Employees
5-7 Years of Experience
Cloud • Software
This is an exciting opportunity for a software engineer passionate about open source software, Linux, and Data Centre automation. Come build a rewarding, meaningful career working with the best and brightest people in technology at Canonical, a growing international software company.
Top Benefits:
401-K
Dental Insurance
Health Insurance
+3 More
19 Days Ago
Belfast, Northern Ireland
65 Employees
7+ Years of Experience
65 Employees
7+ Years of Experience
Artificial Intelligence • Software • Automation
Lead/Senior Software Engineer role with a focus on developing and evolving core components for an automation software. Responsibilities include capturing user interactions, debugging client Windows environments, refactoring components, testing environment setup, and platform maintenance. Strong emphasis on technical ownership, mentorship, and leadership within the engineering team.
5 Days Ago
Belfast, Northern Ireland
Remote
4,900 Employees
7+ Years of Experience
4,900 Employees
7+ Years of Experience
Fintech • Payments
Seeking a Senior Software Engineer to work on server-side microservice development and architectures using NodeJs, JavaScript, TypeScript, C#, Java, and various cloud technologies. Responsibilities include working on front-end web code, back end services, data stores, and infrastructure systems. The candidate must be experienced in Agile methodologies and possess skills in encryption schemes, modern APIs, and front-end frameworks.
Top Benefits:
401-K
Adoption Assistance
Company Equity
+18 More
16 Days Ago
Belfast, Northern Ireland
Remote
116 Employees
7+ Years of Experience
116 Employees
7+ Years of Experience
Software
Mixmax is hiring a Senior Software Engineer for the Communicate team to work on communication features within the product. Responsibilities include improving infrastructure, contributing to critical projects, and enhancing architectural patterns and scalability. The tech stack includes Node, React, Elasticsearch, Terraform, Redis, and AWS.
20 Days Ago
Belfast, Northern Ireland
Remote
578,950 Employees
5-7 Years of Experience
578,950 Employees
5-7 Years of Experience
Big Data • Cloud • Logistics • Machine Learning • Retail
Seeking a Staff Software Engineer with 5+ years of software development and architecture experience to lead the design of complex software changes and develop new features in a dynamic engineering environment. Responsibilities include providing technical leadership, crafting high-quality software, driving innovation, and fostering a culture of accountability and inclusivity within the team.
Top Benefits:
401-K
Commuter Benefits
Company Equity
+21 More
13 Days Ago
Belfast, Northern Ireland
Remote
35 Employees
3-5 Years of Experience
35 Employees
3-5 Years of Experience
Software • Automation
Ground floor opportunity for a Senior Software Engineer at Rootly to shape the international trajectory of the incident management platform. Responsibilities include end-to-end feature sets, infrastructure architecture, new initiatives, engineering standards improvement, front-end design, and customer collaboration. Ideal candidate has 3+ years of experience with modern programming languages, cloud services, and SaaS products.
20 Days Ago
Belfast, Northern Ireland
2,800 Employees
7+ Years of Experience
2,800 Employees
7+ Years of Experience
Information Technology • Security • Software
A Sr Software Developer position at Entrust, working on a major crypto-security product. Responsibilities include design and development of full-stack systems, software coding, testing, and review. Qualifications include experience in software development, C, Python, Golang, and familiarity with complex, multi-component projects.
19 Days Ago
Belfast, Northern Ireland
Remote
1,485 Employees
7+ Years of Experience
1,485 Employees
7+ Years of Experience
Internet of Things
Senior Staff Software Engineer at Mozilla Corporation working on privacy-respecting and value-aligned advertising systems for Firefox, MDN, Pocket, and more. Leading projects, providing technical leadership, and collaborating with multiple teams.
Top Benefits:
401-K
Commuter Benefits
Company Outings
+15 More
12 Days Ago
Belfast, Northern Ireland
Remote
4,900 Employees
5-7 Years of Experience
4,900 Employees
5-7 Years of Experience
Fintech • Payments
Design, implement, and maintain robust and scalable full-stack components, integrate AI components and models, design and implement REST APIs, manage version control using GitHub, balance rapid development with regulatory compliance, collaborate with cross-functional teams, and communicate solutions to stakeholders.
Top Benefits:
401-K
Adoption Assistance
Company Equity
+18 More
6 Days Ago
Belfast, Northern Ireland
Remote
50 Employees
7+ Years of Experience
50 Employees
7+ Years of Experience
Blockchain • Web3
Senior Software Engineer specializing in Rust development for Aurora Labs. Responsible for maintaining and improving business-critical infrastructure services written in Rust. Must have experience in blockchain industry, smart contract development, and technical governance of OSS projects around NEAR ecosystem. Collaboration with a distributed team and active participation in Ethereum engineering forums are key responsibilities.
7 Days Ago
Belfast, Northern Ireland
Remote
132 Employees
3-5 Years of Experience
132 Employees
3-5 Years of Experience
Fintech • Information Technology
Lead all Crypto related engineering including spot and derivatives exchanges. Architect, implement, and maintain systems for Alpaca Crypto. Design and build high-performance matching engine, regulatory reporting, banking integrations, and more. Remote position reporting to Head of Crypto initially and CTO later.
7 Days Ago
Belfast, Northern Ireland
Remote
6,766 Employees
7+ Years of Experience
6,766 Employees
7+ Years of Experience
Software
As a Senior Backend Engineer at HubSpot, you will write and ship production code with meaningful impact, build new features, collaborate with cross-functional teams, and contribute to company growth. This role requires backend development experience with a focus on users and technical challenges.
7 Days Ago
Belfast, Northern Ireland
880 Employees
7+ Years of Experience
880 Employees
7+ Years of Experience
Cloud • Software
Seeking an experienced Python developer with a background in MongoDB to help build a fully managed MongoDB solution based on Juju. Key responsibilities include operating and managing MongoDB clusters, infrastructure deployment automations, and ensuring quality and automated testing. Remote-first culture with competitive salary and impactful open source projects.
Top Benefits:
401-K
Dental Insurance
Health Insurance
+3 More
7 Days Ago
Belfast, Northern Ireland
Remote
1,348 Employees
5-7 Years of Experience
1,348 Employees
5-7 Years of Experience
Marketing Tech • Software
Seeking a Senior Cloud Developer experienced in cloud development, reverse engineering, and collaboration. Responsibilities include architectural design, cross-team collaboration, application development, code reviews, and participation in the software development life cycle.
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