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Top Software Engineer Jobs in Belfast

6 Days AgoSaved
In-Office
Belfast, Northern Ireland
Entry level
Entry level
Security • Cybersecurity
The Associate Software Engineer will develop integrations, work on MTA server optimization for email traffic, and embrace DevOps culture. Responsibilities include coding, troubleshooting, and collaborating with senior engineers.
Top Skills: .NetAws LambdaCircleCICloudwatchDockerDynamo DbEc2EcsGitGitNode.jsPostgresTerraformTypescript
7 Days AgoSaved
In-Office or Remote
Belfast, Northern Ireland
Senior level
Senior level
HR Tech • Other • Professional Services
The role involves training LLMs to generate code, comparing and ranking snippets, and providing feedback for reinforcement learning, requiring strong software engineering skills.
Top Skills: JavaScriptNext.JsNode.jsPostgresReactTypescript
7 Days AgoSaved
In-Office
Belfast, Northern Ireland
Mid level
Mid level
Financial Services
Develop and maintain proprietary RegTech software solutions using PHP and Symfony in an Agile environment, focusing on microservices and REST APIs.
Top Skills: BitbucketJIRALampLaravelNoSQLPHPRabbitMQRelational DatabasesRest ApiSymfony
8 Days AgoSaved
In-Office or Remote
Belfast, Northern Ireland
Mid level
Mid level
HR Tech • Other • Professional Services
The Python Software Engineer will train large-language models by comparing and ranking code snippets, repairing AI-generated code, and providing feedback to improve model outputs.
Top Skills: Python
Reposted 4 Days AgoSaved
Easy Apply
Remote or Hybrid
Belfast, Northern Ireland
Easy Apply
Senior level
Senior level
Artificial Intelligence • Cloud • Software • Cybersecurity
Join Datadog as a Staff Engineer for Application Performance Monitoring, leading technical initiatives and collaborating on complex systems design and solutions.
Top Skills: Backend Programming
Reposted 8 Days AgoSaved
In-Office
Belfast, Northern Ireland
Mid level
Mid level
Industrial • Manufacturing
Seeking a Software Engineer to develop and maintain features for a SystemOperations application, integrate devices, and ensure security compliance. Knowledge in various technologies like GraphQL, SQL, Angular, and Docker is essential.
Top Skills: AngularCi/CdDhcpDockerEvent-Driven CommunicationGraphql ApisMdnsMqttNest.JsSql Databases
3 Hours AgoSaved
In-Office or Remote
Belfast, Northern Ireland
Mid level
Mid level
Other
Responsible for leading technical and business development of IDTPay, managing full software development life-cycle, ensuring system reliability, and driving technical excellence.
Top Skills: AWSCSSDockerGitGoHTMLJavaScriptJenkinsMongoDBNoSQLReact
Reposted 14 Days AgoSaved
In-Office
Belfast, Northern Ireland
Senior level
Senior level
Fintech • HR Tech • Payments • Social Impact • Financial Services
Seeking a Senior Frontend Engineer to build and maintain mobile and web applications, mentor junior engineers, and improve technical strategies using React, TypeScript, and JavaScript.
Top Skills: Aws LambdaCSSDetoxExpressGoogle Cloud FunctionsHTMLJavaScriptMongoDBNode.jsPlaywrightPostgresReactReact NativeRestful ApiTypescript
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7 Hours AgoSaved
Remote
Belfast, Northern Ireland
Mid level
Mid level
Blockchain • Software
As a Software Engineer in Test for Lace Wallet, you will ensure the quality and performance of mobile applications through automated testing and CI/CD optimization, collaborating with software and product teams.
Top Skills: AppiumDetoxEspressoGithub ActionsJavaJavaScriptJenkinsKotlinPythonSentrySwiftXctest
10 Days AgoSaved
In-Office or Remote
Belfast, Northern Ireland
Mid level
Mid level
HR Tech • Other • Professional Services
This role involves training large-language models by evaluating, repairing, and refactoring AI-generated code, providing detailed feedback on coding quality.
Top Skills: Python
Reposted 20 Hours AgoSaved
Remote or Hybrid
Belfast, Northern Ireland
Senior level
Senior level
Energy
Build and maintain systems for electric car leasing, developing APIs and frontend applications, while collaborating cross-functionally to improve user experiences.
Top Skills: AWSGraphQLNoSQLPostgresPythonReact
Reposted 20 Hours AgoSaved
Remote
Belfast, Northern Ireland
Mid level
Mid level
Security • Cybersecurity
You will develop streaming infrastructure, handle large-scale data processing, and collaborate with teams on product requirements and talent acquisition.
Top Skills: APIsDistributed SystemsKafkaPythonSpark
Reposted 20 Hours AgoSaved
Remote
Belfast, Northern Ireland
Mid level
Mid level
Security • Cybersecurity
As a Software Engineer II, you'll design critical software projects, resolve performance issues, mentor juniors, and enhance portal architecture for enterprise readiness.
Top Skills: AWSGoK8PostgresPythonPython/DjangoReactTypescript
Reposted 6 Days AgoSaved
Remote or Hybrid
Belfast, Northern Ireland
Senior level
Senior level
Cloud • Fintech • Information Technology • Machine Learning • Software
As a Senior Software Engineer, you'll integrate Syft Analytics, develop scalable software solutions, mentor junior engineers, and uphold engineering standards.
Top Skills: AnalyticsAutomationCloud-Based ReportingCode ReviewExpressJavaScriptNode.jsReact
16 Days AgoSaved
Hybrid
Belfast, Northern Ireland
Senior level
Senior level
Fintech • HR Tech • Payments • Social Impact • Financial Services
The Senior Software Engineer will lead technical efforts in the Site Reliability Engineering team, mentor juniors, and ensure operational excellence.
Top Skills: AWSDatadogGoTerraform
Reposted YesterdaySaved
Belfast, Northern Ireland
Senior level
Senior level
Greentech • Energy
As a Staff Backend Software Engineer, you will build platform infrastructure for real-time data processing, solve optimization problems, and design APIs using advanced programming techniques.
Top Skills: AWSInfrastructure As CodeMachine LearningPythonRustServerless ComputingTypescriptUnix
2 Days AgoSaved
Remote
Belfast, Northern Ireland
Mid level
Mid level
Software
Lokalise seeks a Staff Full Stack Engineer to lead complex projects, mentor engineers, and enhance product architecture and performance. Responsibilities include technical decision-making, cross-team collaborations, and optimizations for scalability and maintainability.
Top Skills: DockerElasticsearchGraphQLJavaScriptMongoDBMySQLPostgresRabbitMQReactRedisRest ApisSqsTypescript
2 Days AgoSaved
Remote
Belfast, Northern Ireland
Senior level
Senior level
Software • Consulting
The Senior Software Engineer will develop scalable mobile applications using React Native, optimizing performance, resolving bugs, and mentoring junior developers in an Agile environment.
Top Skills: GitGraphQLJavaScriptMobxReact NativeReduxRestful Apis
2 Days AgoSaved
In-Office or Remote
Belfast, Northern Ireland
Mid level
Mid level
Software
The role involves enhancing CI systems, building internal tools, hardening CI infrastructure, and resolving low-level Linux bugs.
Top Skills: AWSBashC++DockerLinuxRustSolidityTerraformTypescript
2 Days AgoSaved
In-Office or Remote
Belfast, Northern Ireland
Junior
Junior
Software
The Graphics Software Engineer develops the graphics stack for SUSE Linux, enhancing remote desktop applications and collaborating with communities.
Top Skills: CEglMesaOpenglPythonShellVulkanWayland
Reposted 7 Days AgoSaved
Belfast, Northern Ireland
Senior level
Senior level
AdTech • Digital Media • eCommerce • Marketing Tech • Sales
Senior Engineers engage in code reviews and discussions, develop high-performance software, troubleshoot technical challenges, and lead project delivery while collaborating with teams.
Top Skills: AWSMySQLNode.jsReactTypescript
Reposted 7 Days AgoSaved
Easy Apply
In-Office or Remote
Belfast, Northern Ireland
Easy Apply
Senior level
Senior level
Cloud • Security • Software • Cybersecurity • Automation
This role involves leading the design and evolution of GitLab’s multi-tenant platform, ensuring high availability and performance while mentoring team members. Responsibilities include backend API design and fostering a collaborative engineering culture.
Top Skills: Cloud ComputingGoRuby
Reposted 7 Days AgoSaved
Easy Apply
Hybrid
Belfast, Northern Ireland
Easy Apply
Senior level
Senior level
Big Data • Cloud • Software • Database
The Senior Software Engineer will design and develop features for MongoDB Atlas, manage database clusters' infrastructure, and collaborate on complex technical projects.
Top Skills: AWSAzureC#GCPGoJavaReactTypescript
13 Days AgoSaved
In-Office
Belfast, Northern Ireland
Entry level
Entry level
Security • Cybersecurity
Join as a Backend Software Engineer to build and run services, analyze data, improve security, and enhance user experience with mentorship support.
Top Skills: AWSCircleCIDockerDynamoDBGitGitPostgresPythonTerraform
Reposted 3 Days AgoSaved
Remote
Belfast, Northern Ireland
Senior level
Senior level
Machine Learning • Software
The Staff Frontend Software Engineer will lead software development projects, overseeing code reviews and architectural design, while collaborating closely with a small engineering team. Responsibilities include developing strategic features for web applications, proposing improvements, and solving complex technical problems.
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