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Top Software Engineer Jobs in Belfast

Reposted 10 Hours AgoSaved
Hybrid
Belfast, Northern Ireland
Mid level
Mid level
Fintech • Software • Financial Services
The Software Engineer II will design and optimize financial technology solutions, collaborate with cross-functional teams, and maintain robust code while ensuring compliance with industry standards.
Top Skills: BigQueryCloud FunctionsGoGoogle Cloud PlatformJavaPub/SubPythonSQL
4 Days AgoSaved
Remote or Hybrid
Belfast, Northern Ireland
Junior
Junior
Artificial Intelligence • Cloud • Information Technology • Sales • Security • Software • Cybersecurity
The Software Engineer II role involves developing new features, maintaining services, collaborating with teams, and ensuring products meet customer needs.
Top Skills: AWSGoJavaPython
Reposted 4 Days AgoSaved
Hybrid
Belfast, Northern Ireland
Mid level
Mid level
Fintech • Software • Financial Services
As a Software Engineer II, you will design, build, and optimize billing services on the Apex Ascend platform using languages like Java and Python. Responsibilities include developing microservices, testing, debugging, and collaborating with teams to enhance billing applications.
Top Skills: BazelBigQueryFlywayGoGoogle Cloud PlatformJavaPostgresPub/SubPythonSQL
Reposted 10 Hours AgoSaved
Remote or Hybrid
Belfast, Northern Ireland
Senior level
Senior level
Artificial Intelligence • Cloud • Information Technology • Sales • Security • Software • Cybersecurity
Senior engineer responsible for end-to-end delivery of scalable, reliable features. Design and implement Python-based services, work with Kubernetes and cloud platforms, contribute to architecture, champion testing/monitoring, and mentor junior engineers while partnering with product and UX teams to meet customer needs.
Top Skills: Cloud TechnologiesKubernetesPythonRelational Databases
18 Days AgoSaved
Easy Apply
Remote
Belfast, Northern Ireland
Easy Apply
Junior
Junior
Big Data • Fintech • Mobile • Payments • Financial Services
As a Software Engineer II at Affirm, you will develop backend systems, collaborate with product teams, and support operations, ensuring timely project delivery while fostering team engagement and growth.
Top Skills: AWSKotlinKubernetesMySQLPython
Reposted 4 Days AgoSaved
Hybrid
Belfast, Northern Ireland
Senior level
Senior level
Fintech • Software • Financial Services
Seeking a Senior Software Engineer for designing, developing, and maintaining software solutions; focusing on billing platforms and collaboration across teams.
Top Skills: AWSAzureBazelBigQueryCi/CdDatadogFlywayGCPGrpcJavaJooqPostgresProtobufPubsubPython
Reposted 19 Days AgoSaved
Remote or Hybrid
Belfast, Northern Ireland
Mid level
Mid level
Artificial Intelligence • Big Data • Enterprise Web • Fintech • Software • Financial Services
Develop and maintain high-volume exchange connectivity software, work within an agile team, write efficient code, and mentor team members.
Top Skills: C++
Reposted 2 Days AgoSaved
In-Office
Belfast, Northern Ireland
Senior level
Senior level
Fintech • Financial Services
Join Citi as a Python Software Engineer focused on Generative AI to design and develop production-grade AI solutions for Markets, collaborating with cross-functional teams to drive innovation.
Top Skills: Ai SystemsGenerative AiLlmsPythonSoftware Engineering
Reposted 21 Days AgoSaved
Remote
Belfast, Northern Ireland
Senior level
Senior level
Healthtech
The Senior Software Engineer will design and build backend services for health data, improve reliability, and deliver robust solutions to enhance patient care.
Top Skills: FastapiGoGoogle Cloud PlatformNext.JsPostgresPythonTemporal CloudTypescript
Reposted 21 Days AgoSaved
Remote
Belfast, Northern Ireland
Mid level
Mid level
Healthtech
The Software Engineer will build customer-facing products for healthcare, focusing on full-stack feature development and user experience, while engaging with customers and iterating on the product based on feedback.
Top Skills: Fast ApiGCPGoPythonReactReact NativeTypescript
Reposted 8 Days AgoSaved
Remote or Hybrid
Belfast, Northern Ireland
Senior level
Senior level
Artificial Intelligence • Cloud • Information Technology • Sales • Security • Software • Cybersecurity
Lead architectural development across core products, focusing on operational excellence and innovation while driving collaboration and growth within teams.
Top Skills: AWSGoJavaPython
Reposted 3 Days AgoSaved
In-Office
Belfast, Northern Ireland
Senior level
Senior level
Fintech • Financial Services
The Senior Programmer Analyst will lead development using modern software engineering and DevOps practices, requiring extensive Java and Go expertise, along with fostering collaborative developer culture.
Top Skills: DockerGoGradleJavaLinux/UnixMavenMicroservices ArchitectureOpenshiftRestful ApisSpring BootSpring Data JpaSpring FrameworkSpring MvcSpring SecuritySQL
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Reposted 9 Days AgoSaved
Hybrid
Belfast, Northern Ireland
Senior level
Senior level
Fintech • Software • Financial Services
The Senior Software Engineer will design, develop, and maintain software solutions, focusing on customer identity verification and data analysis while collaborating with cross-functional teams to deliver robust products.
Top Skills: AWSAzureCi/CdGCPJavaSQL
Reposted 4 Days AgoSaved
In-Office or Remote
Belfast, Northern Ireland
Mid level
Mid level
HR Tech • Other • Professional Services
Train large-language models (LLMs) by evaluating, ranking, repairing, and refactoring code. Provide detailed feedback and maintain the RLHF pipeline.
Top Skills: Rust
Reposted 4 Days AgoSaved
In-Office or Remote
Belfast, Northern Ireland
Mid level
Mid level
HR Tech • Other • Professional Services
The Software Engineer will analyze, rank, and improve AI-generated code, providing feedback for reinforcement learning in a remote role.
Top Skills: C#
Reposted 4 Days AgoSaved
In-Office or Remote
Belfast, Northern Ireland
Mid level
Mid level
HR Tech • Other • Professional Services
The role involves training large-language models to improve code generation, reviewing and editing AI-generated code, and providing feedback for reinforcement learning refinement.
Top Skills: C++
Reposted 10 Days AgoSaved
Hybrid
Belfast, Northern Ireland
Senior level
Senior level
Fintech • Software • Financial Services
The Senior Software Engineer will develop backend systems and Market Data APIs, focusing on high-performance solutions in a fast-paced environment, utilizing cloud-native technologies.
Top Skills: AlloydbApache AirflowBigQueryDockerGoogle Cloud PlatformGoogle Pub/SubJavaKafkaKubernetesRabbitMQRedis
Reposted 5 Days AgoSaved
In-Office or Remote
Belfast, Northern Ireland
Mid level
Mid level
HR Tech • Other • Professional Services
As a Software Engineer, you will help train large-language models in code evaluation and training, focusing on Ruby, with an emphasis on code review and improvement.
Top Skills: Ruby
Reposted 5 Days AgoSaved
In-Office or Remote
Belfast, Northern Ireland
Mid level
Mid level
HR Tech • Other • Professional Services
Train large-language models to improve code quality by comparing snippets, providing feedback, and refining AI-generated code. Requires strong communication skills and attention to detail.
Top Skills: C
Reposted 5 Days AgoSaved
In-Office or Remote
Belfast, Northern Ireland
Mid level
Mid level
HR Tech • Other • Professional Services
Responsible for training large-language models by reviewing, ranking, and improving AI-generated code. Requires strong software engineering skills.
Top Skills: Java
Reposted 6 Days AgoSaved
In-Office or Remote
Belfast, Northern Ireland
Mid level
Mid level
HR Tech • Other • Professional Services
Review, rank, and improve AI-generated code to train LLMs: compare implementations, repair/refactor for correctness, efficiency, and style, and provide detailed feedback for RLHF pipelines. Work asynchronously as a remote contractor, injecting ratings, edits, and test results to improve model outputs.
Top Skills: Rust
Reposted 6 Days AgoSaved
In-Office or Remote
Belfast, Northern Ireland
Mid level
Mid level
HR Tech • Other • Professional Services
Evaluate and improve AI-generated code: compare and rank snippets, repair and refactor for correctness, efficiency, and style, and inject detailed feedback and test results into the RLHF training pipeline as an asynchronous remote contributor.
Top Skills: C#
Reposted 6 Days AgoSaved
In-Office or Remote
Belfast, Northern Ireland
Mid level
Mid level
HR Tech • Other • Professional Services
Review, rank, and improve AI-generated code across languages, focusing on Ruby. Repair/refactor code, provide detailed written justifications, and inject ratings/edits/test results into the RLHF pipeline to help train models.
Top Skills: Ruby
Reposted 6 Days AgoSaved
In-Office or Remote
Belfast, Northern Ireland
Mid level
Mid level
HR Tech • Other • Professional Services
Evaluate, rank, repair, and refactor AI-generated code to improve correctness, efficiency, and style; provide detailed written feedback for RLHF pipelines; and help maintain the code-evaluation and training workflow remotely.
Top Skills: Java
Reposted 6 Days AgoSaved
In-Office or Remote
Belfast, Northern Ireland
Mid level
Mid level
HR Tech • Other • Professional Services
Review, rank, repair, and refactor AI-generated code to improve correctness, performance, and style. Provide detailed written feedback and edits for RLHF pipelines, converting expert judgments into signals used to train models. Work asynchronously as a remote 1099 contractor.
Top Skills: C++
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