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Top Software Engineer Jobs in Belfast

Reposted 6 Days AgoSaved
In-Office or Remote
Belfast, Northern Ireland
Senior level
Senior level
Artificial Intelligence • Real Estate • Software
As a Senior Software Engineer, you'll design, build, and scale the core systems and APIs of The Flex platform, focusing on automation, reliability, and performance.
Top Skills: AWSFastapiNode.jsPythonReact
Reposted 6 Days AgoSaved
In-Office
Belfast, Northern Ireland
Senior level
Senior level
eCommerce • Fintech • Payments
Lead design and implementation of C++ software for secure embedded payment terminals, handling EMV/contactless/mobile transactions, cryptography and POS integrations. Drive full SDLC delivery, mentor engineers, improve CI/CD and tooling, troubleshoot embedded stacks, and collaborate with product and test teams to deliver production-grade solutions.
Top Skills: AndroidAndroid StudioC++ClionCryptographic ApisEmbedded SystemsEmvGitJenkinsJetpack ComposeKotlinMobile WalletNfcP2PePci DssPos IntegrationPythonRhelSecure Channel ProtocolsSmart-CardSQLVisual StudioWindows
Reposted 6 Days AgoSaved
In-Office
Belfast, Northern Ireland
Senior level
Senior level
eCommerce • Fintech • Payments
As a Staff Software Engineer, you will lead software development for payment solutions, enhance code quality, and ensure compliance standards.
Top Skills: .NetBambooBddC#Ci/CdCSSGitlabHTMLJenkinsSpecflowSQL ServerUnit Tests
Reposted 20 Days AgoSaved
Easy Apply
Remote
Belfast, Northern Ireland
Easy Apply
Mid level
Mid level
Database • Analytics
Analyze and optimize ClickHouse database performance, develop performance tests, support engineering teams, collaborate with core teams, and engage with the open-source community.
Top Skills: C++Database InternalsUnix Systems
Reposted 20 Days AgoSaved
In-Office or Remote
Belfast, Northern Ireland
Senior level
Senior level
Cloud • Software
Design, build, and maintain backend systems for products, focusing on APIs, data models, and distributed systems. Collaborate with teams to ensure system reliability and performance.
Top Skills: AmqpAWSEvent-Driven ArchitectureGoGrafanaGrpcKafkaKubernetesMqttOpentelemetryProtobufPythonRedis Streams
7 Days AgoSaved
Remote or Hybrid
Belfast, Northern Ireland
Senior level
Senior level
Cloud • Software
Lead the design and development of complex Rails features, mentor junior engineers, define technical direction, and ensure high-quality code while collaborating with stakeholders.
Top Skills: CapybaraGithub ActionsHerokuMinitestPlaywrightPostgresRails 8ReactRedisSassSidekiqStripe ConnectTimescaledbTurbo 8
Reposted 7 Days AgoSaved
In-Office
Belfast, Northern Ireland
Senior level
Senior level
eCommerce • Fintech • Payments
As a Senior Software Engineer, you'll design and implement features on the Merchantware Gateway, focusing on backend services, code quality, and team collaboration.
Top Skills: .NetBambooBddC#Ci/CdGitlabJenkinsSpecflowSQL ServerTest Automation
Reposted 8 Days AgoSaved
In-Office
Belfast, Northern Ireland
Senior level
Senior level
Fintech • Financial Services
Seeking a Senior Software Engineer with expertise in Kotlin or Java to enhance developer platforms and internal tools at Citi's CTO organization, focusing on server-side engineering and modern databases.
Top Skills: Apache KafkaDockerHarnessHelmJavaKotlinKubernetesMongoDBPostgresSpring BootTekton
Reposted 8 Days AgoSaved
In-Office or Remote
Belfast, Northern Ireland
Senior level
Senior level
Artificial Intelligence • Enterprise Web • Software
Responsible for building scalable distributed systems, mentoring teammates, innovating on technical solutions, and improving team processes. Requires expertise in backend languages, especially Golang and Typescript.
Top Skills: GoNode.jsTypescript
Reposted 21 Days AgoSaved
Remote
Belfast, Northern Ireland
Senior level
Senior level
Design
The Senior Software Engineer will design high impact features, collaborate with teams, ensure maintainable systems, and write quality code.
Top Skills: AWSGraphQLKubernetesNestjsNext.JsNode.jsPostgresReactTypescript
23 Days AgoSaved
Remote
Belfast, Northern Ireland
Mid level
Mid level
Cloud • Security • Cybersecurity
Design, develop, and maintain front-end applications using Vue and TypeScript, collaborate with teams, and integrate emerging technologies.
Top Skills: AngularAstroCSSReactSvelteTypescriptVue
23 Days AgoSaved
Remote
Belfast, Northern Ireland
Senior level
Senior level
Cloud • Security • Cybersecurity
The Back End Software Engineer will design and develop Azure SaaS applications, collaborate with teams, prototype solutions, and maintain application performance while resolving issues.
Top Skills: App ServicesAzure FunctionsAzure SaasC#CosmosEvent GridGremlinService BusStorageTsql
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Reposted 15 Hours AgoSaved
Easy Apply
Remote
Belfast, Northern Ireland
Easy Apply
Senior level
Senior level
Software
Join Grafana Labs as a Senior Software Engineer to build and maintain k6, a performance testing tool, collaborating with engineers on design and implementation.
Top Skills: AWSDockerGoGrpcHTTPJavaScriptTypescriptWebsockets
Reposted 15 Hours AgoSaved
Easy Apply
Remote
Belfast, Northern Ireland
Easy Apply
Mid level
Mid level
Information Technology • Software
As a Senior Software Engineer at Rewardful, you'll improve infrastructure, optimize performance, implement scalable solutions, and develop new features for our SaaS affiliate management platform.
Top Skills: CapybaraCi/CdCloud InfrastructureDockerGithub ActionsHerokuJavaScriptKubernetesPostgresRedisRspecRuby On RailsSidekiqTypescript
Reposted 15 Hours AgoSaved
Remote
Belfast, Northern Ireland
Senior level
Senior level
Digital Media • Information Technology • Productivity • Software
As a Senior Software Engineer, you will design and maintain APIs, ensure Mural's editor is reliable and perform migrations and refactors, while also mentoring team members.
Top Skills: JavaScriptNode.jsReactTypescript
Reposted 15 Hours AgoSaved
Remote
Belfast, Northern Ireland
Senior level
Senior level
Software
As a Software Development Engineer II, you will develop and maintain web services for navigation solutions, ensuring reliability and performance while collaborating with the team.
Top Skills: AWSCdkEcsGitLambdaPythonS3Step FunctionsTypescript
Reposted 23 Days AgoSaved
Easy Apply
In-Office or Remote
Belfast, Northern Ireland
Easy Apply
Junior
Junior
Cloud • Software
The role involves designing and implementing features, debugging, maintaining documentation, and collaborating with the community in the Mir graphics stack.
Top Skills: C++FlutterLinuxOpenglRustVulkan
Reposted 23 Days AgoSaved
Belfast, Northern Ireland
Mid level
Mid level
Healthtech • Software
As a Software Engineer, you will build and develop the Mindly product, focusing on user needs, implementing reliable code, and collaborating with cross-functional teams.
Top Skills: Express.JsNest.JsNode.jsReactRedux ToolkitTypescript
YesterdaySaved
Easy Apply
Remote
Belfast, Northern Ireland
Easy Apply
Senior level
Senior level
Greentech
As a Senior Software Engineer at KoBold, you'll develop innovative data systems for mineral exploration, collaborating closely with geologists and data scientists to improve exploration success rates. You'll own projects end-to-end, engage with users, and create scalable, production-quality solutions for complex geological challenges.
Top Skills: AWSDjangoPrefectPythonReactRetool
YesterdaySaved
Easy Apply
Remote
Belfast, Northern Ireland
Easy Apply
Senior level
Senior level
Cybersecurity
Design, build, and scale the core systems for VulnCheck's platform, participate in technical discussions, mentor junior engineers, and improve system reliability.
Top Skills: AWSGoJavaPython
YesterdaySaved
Remote
Belfast, Northern Ireland
Senior level
Senior level
Blockchain • Financial Services • Cryptocurrency • Web3
As a Senior Staff Software Engineer on the Platform Team, you'll design high-performance backend systems, mentor engineers, and drive architectural strategies to enhance Kraken's system reliability and scalability.
Top Skills: C++GoGrpcLinuxPythonRestRust
YesterdaySaved
Remote
Belfast, Northern Ireland
Expert/Leader
Expert/Leader
Fintech • Financial Services
Seeking a Lead Software Engineer for a new squad focused on Personal Financial Management to guide teams and drive technical direction from discovery to delivery.
Top Skills: AndroidBitbucketCucumberDockerFinacleForgerockGitGithub ActionsiOSJavaJenkinsKafkaKubernetesMicronautQuarkusReactSeleniumSonarqubeSplunkSpring Boot
Reposted 7 Days AgoSaved
Easy Apply
Remote
Belfast, Northern Ireland
Easy Apply
Senior level
Senior level
Cloud • Software
Develop and enhance MAAS core components, improve architecture, collaborate across teams, and ensure high standards in documentation and CI practices.
Top Skills: DhcpDnsGoKvmLxcNtpPxePythonReactTftpTypescript
YesterdaySaved
Remote
Belfast, Northern Ireland
Senior level
Senior level
Fintech • Financial Services
As a Senior Software Engineer at Westpac, you'll design and maintain Java-based solutions for fraud and financial crime platforms, collaborating with teams and mentoring junior engineers in an agile environment.
Top Skills: CloudbeesDockerDynatraceJavaJenkinsKubernetesRest ApisSplunkSpring BootTerraform
Reposted YesterdaySaved
Easy Apply
Remote
Belfast, Northern Ireland
Easy Apply
Senior level
Senior level
Artificial Intelligence • Information Technology • Software
Design and build key features for an AI coding platform, focusing on user experience and product growth in a collaborative environment.
Top Skills: Next.JsNode.jsReactTypescript
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