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Top Software Engineer Jobs in Belfast

338+ Job Results
13 Days Ago
Belfast, Northern Ireland
Remote
13,042 Employees
7+ Years of Experience
13,042 Employees
7+ Years of Experience
Fintech
Reporting to the Senior Manager, the Senior Software Engineer designs, develops, analyzes, and maintains high-quality software product applications for the financial industry. Responsibilities include participating in design meetings, developing code, testing, debugging, and resolving issues. Desired competencies involve technical project leadership, providing thought leadership, and working on complex issues. Desired domain experience includes building multi-channel solutions and cloud-hosted applications.
3 Days Ago
Belfast, Northern Ireland
3,780 Employees
7+ Years of Experience
3,780 Employees
7+ Years of Experience
Security • Cybersecurity
Seeking a highly motivated Senior Software Engineer to work on leading Email Security product suite, contributing to ambitious new features and products. Collaborate with cross-functional teams and play a major role in high-value projects. Requires expertise in a wide range of technologies and extensive experience in Linux environments.
Top Benefits:
401-K
Commuter Benefits
Company Outings
+14 More
2 Days Ago
Belfast, Northern Ireland
Remote
151 Employees
7+ Years of Experience
151 Employees
7+ Years of Experience
Healthtech
Join Doccla, a virtual ward company revolutionizing healthcare. Build and maintain virtual ward platform for remote patient monitoring. Work with functional programming (Clojure, Elixir) for backend and React/TypeScript for frontend. Drive engineering standards, automation, and growth in a B2B healthcare setting.
14 Days Ago
Belfast, Northern Ireland
3,366 Employees
7+ Years of Experience
3,366 Employees
7+ Years of Experience
Software
Seeking a talented Senior Software Engineer to lead the development of an innovative platform designed to streamline organizational meeting and decision management. Responsibilities include leading design and implementation, mentoring software engineers, and staying current with emerging technologies.
2 Days Ago
Belfast, Northern Ireland
Remote
248 Employees
1-3 Years of Experience
248 Employees
1-3 Years of Experience
Artificial Intelligence • Software
Lead the development of dynamic tracing for JavaScript applications, contribute to backend services optimization, resolve performance issues, engage in code design, collaborate with clients, mentor developers, and promote best software development practices.
8 Days Ago
Belfast, Northern Ireland
Remote
40 Employees
7+ Years of Experience
40 Employees
7+ Years of Experience
Blockchain
Join our team as a Senior Software Engineer in Platforms at OP Labs, where we are working on scaling Ethereum's performance through open-source innovation. Responsibilities include supporting developer productivity, optimizing build and test times, contributing to the Optimism protocol development, and ensuring a reliable development stack. Skills required include experience with Docker, Kubernetes, Go, platform compatibility, and willingness to learn and adapt.
7 Hours Ago
Belfast, Northern Ireland
Remote
133 Employees
5-7 Years of Experience
133 Employees
5-7 Years of Experience
Artificial Intelligence • Edtech
Design, build, and implement backend services in microservice architecture using Go programming. Write high-quality, scalable code and collaborate with cross-functional teams to ship new features. Improve maintainability and performance of services. Resolve complex product issues reported by customers.
15 Days Ago
Belfast, Northern Ireland
Hybrid
634 Employees
5-7 Years of Experience
634 Employees
5-7 Years of Experience
Healthtech • Software
The Software Development Engineer will work on a Greenfield Application used by Hospitals to record patient journeys and provide healthcare insights. Responsibilities include engaging with client behavior, building compliance, expanding registry beyond Trauma, and working on in-house tooling. The role involves working across the stack with technologies like C#, .NET Core, Angular, Azure DevOps, Terraform, SQL Server, and more. The ideal candidate has 3+ years of experience in software engineering, problem-solving skills, and proficiency in C# .NET.
Top Benefits:
401-K
401-K Matching
Child Care Benefits
+31 More
15 Hours Ago
Belfast, Northern Ireland
Remote
3,222 Employees
7+ Years of Experience
3,222 Employees
7+ Years of Experience
Cloud • Software
Seeking a Senior Software Engineer to join Elasticsearch Performance Engineering team, focusing on developing automated tooling for benchmarking Elasticsearch workloads at scale in the cloud. Responsibilities include designing tooling, defining best practices, developing methodologies for benchmarking, architecting solutions, and investigating performance issues. Required skills include Python, Java, Linux shell scripting, Kubernetes, and cloud architectures.
Top Benefits:
401-K
401-K Matching
Company Equity
+27 More
16 Hours Ago
Belfast, Northern Ireland
Remote
6,766 Employees
1-3 Years of Experience
6,766 Employees
1-3 Years of Experience
Software
Join HubSpot as a Staff Software Engineer on the Forms Frontend team within Marketing Hub. Help build the future of the Forms product, write and ship production code, collaborate with cross-functional teams, and contribute to product innovation. Experience with React and TypeScript is preferred. Passion for clean code, product development, and mentoring is essential.
22 Days Ago
Belfast, Northern Ireland
Remote
578,950 Employees
7+ Years of Experience
578,950 Employees
7+ Years of Experience
Big Data • Cloud • Logistics • Machine Learning • Retail
As a Staff Software Engineer, you will design and engineer integrations for complex enterprise systems, collaborate with cross-functional teams, and provide insights to think beyond the status quo. The tech stack includes React Native, React.js, Angular, .Net C#, Kafka, SQL, CosmosDB, Azure, and more.
Top Benefits:
401-K
Commuter Benefits
Company Equity
+21 More
8 Days Ago
Belfast, Northern Ireland
Remote
10,000 Employees
3-5 Years of Experience
10,000 Employees
3-5 Years of Experience
Cloud • Information Technology • Sales • Security • Cybersecurity
Lead backend engineering efforts, build cloud-based systems for cyber threat detection, collaborate with multiple teams, mentor developers, improve product architecture and performance, contribute to the open-source community.
Top Benefits:
401-K
401-K Matching
Adoption Assistance
+47 More
22 Hours Ago
Belfast, Northern Ireland
Remote
250 Employees
5-7 Years of Experience
250 Employees
5-7 Years of Experience
Blockchain • Software • Cryptocurrency • NFT • Web3
Seeking a Senior Software Engineer to join the AvaCloud team at Ava Labs. Responsibilities include developing scalable backend systems, collaborating with infrastructure and frontend teams, implementing best practices for distributed systems, and partnering with product teams for new feature development. Requires expertise in Golang, Typescript, AWS Cloud Stack, and a passion for blockchain technology.
Top Benefits:
401-K
Commuter Benefits
Company Equity
+34 More
22 Hours Ago
Belfast, Northern Ireland
Remote
23 Employees
7+ Years of Experience
23 Employees
7+ Years of Experience
Security
Stacklok, a software supply chain security startup, is seeking a Senior Software Engineer experienced in Go language, Docker, Linux, and Git. Responsibilities include developing high-quality software, collaborating with teams, and enhancing system-level security. Desired skills include proficiency in secure coding practices and open-source projects.
Yesterday
Belfast, Northern Ireland
14 Employees
7+ Years of Experience
14 Employees
7+ Years of Experience
Artificial Intelligence • Information Technology • Software
Looking for a Principal Software Engineer with 7+ years of professional experience in Python to lead the design and development of a cutting-edge AI-centric platform. Responsibilities include architecting and developing scalable solutions, mentoring the engineering team, driving innovation, advising on technical considerations, and ensuring code quality through best practices.
Yesterday
Belfast, Northern Ireland
Remote
39 Employees
7+ Years of Experience
39 Employees
7+ Years of Experience
Security • Software
Join the Analysis Engineering team at ForAllSecure to work on enhancing the analysis engine behind Mayhem, focusing on discovering bugs and security vulnerabilities. Collaborate with local and remote teammates, develop new features, fix bugs, and improve software security. Ideal candidate has strong computer science fundamentals and experience with systems-level programming in Linux, Rust, Python, and/or C/C++. Knowledge of compiler concepts, binary execution, operating system concepts, vulnerability research, and program analysis is preferred.
23 Days Ago
Belfast, Northern Ireland
Remote
3,222 Employees
3-5 Years of Experience
3,222 Employees
3-5 Years of Experience
Cloud • Software
Shape the technical aspect of Elastic’s observability solution, collaborate with engineering teams, evolve the architecture, and lead a large team with a coherent vision.
Top Benefits:
401-K
401-K Matching
Company Equity
+27 More
2 Days Ago
Belfast, Northern Ireland
Remote
60 Employees
7+ Years of Experience
60 Employees
7+ Years of Experience
Software
We are seeking a strong Python backend engineer to work on our SaaS offering. The role involves discussing and researching issues, taking ownership of the development lifecycle, being hands-on with technical expertise, and documenting code.
2 Days Ago
Belfast, Northern Ireland
Remote
60 Employees
7+ Years of Experience
60 Employees
7+ Years of Experience
Software
Seeking a Senior Software Engineer with strong Python knowledge and excellent coding culture. Must have excellent communication skills and remote work self-discipline. Great to have experience working remotely and open source contributions.
23 Days Ago
Belfast, Northern Ireland
Remote
33 Employees
3-5 Years of Experience
33 Employees
3-5 Years of Experience
Database
We are looking for a Software Engineer to guide customers with technical onboarding and product adoption. You will build features, provide technical guidance, troubleshoot issues, collaborate with teams, contribute to documentation, and maintain communication with key customers.
13 Days Ago
Belfast, Northern Ireland
Remote
145 Employees
1-3 Years of Experience
145 Employees
1-3 Years of Experience
Blockchain • Consulting
The Senior Software Engineer at MultiversX will work on pioneering blockchain solutions, collaborate with teams, and contribute to protocol development. Responsibilities include solving complex software problems, analyzing and implementing solutions, and designing new products. The ideal candidate has 2+ years of Golang experience and a strong background in software development practices and multiple programming languages.
24 Days Ago
Belfast, Northern Ireland
Remote
490 Employees
3-5 Years of Experience
490 Employees
3-5 Years of Experience
Software
Testlio is hiring Software Engineers to help deliver solutions that harness data & AI advancements for quality software testing services.
24 Days Ago
Belfast, Northern Ireland
Remote
1,151 Employees
5-7 Years of Experience
1,151 Employees
5-7 Years of Experience
Other
Senior Golang Software Engineer role at IDT, responsible for full software development life-cycle, working on high-performing applications, and driving technical excellence. Requires 5+ years of production experience, deep knowledge of Golang, and proficiency in modern design patterns.
14 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, you will help build and scale the systems and services that form the foundation of Alpaca and empower millions of users that are trading billions of dollars worth of assets. You will be responsible for building a modern clearing and settlements platform and contribute to architectural decisions for designing scalable and reliable systems.
2 Days Ago
Belfast, Northern Ireland
Remote
6,766 Employees
7+ Years of Experience
6,766 Employees
7+ Years of Experience
Software
As a Senior Engineer on Growth Adoption Core team at HubSpot, you will write and ship production code, build new features and tools, collaborate with cross-functional teams, and help thousands of customers meet their goals and grow their companies.
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