26 to 50 of 469 Open Source Jobs

Senior Software Engineer, WebExtensions

Hiring Organisation
Jobleads-UK
Location
United Kingdom
managers, QA, and the AMO engineering team to deliver features end-to-end.* Contribute to Mozilla-owned extensions and system add-ons.* Participate in open source workflows: code reviews, pull requests, and discussions in Bugzilla/GitHub.* Support extension developers by helping diagnose issues and improving tooling/… shareholders — only to our mission. Along with thousands of volunteer contributors and collaborators all over the world, Mozillians design, build and distribute open-source software that enables people to enjoy the internet on their terms. **About this team and role:**The WebExtensions platform powers the add-ons ecosystem ...

Research Engineer

Hiring Organisation
Arrows
Location
London Area, United Kingdom
Research Engineers | Frontier AI Lab I am partnering with a high-growth Frontier AI Lab, developing an open-source platform to unify structured and unstructured data into advanced knowledge graphs. The company is now expanding its research team and seeking exceptional AI Research Engineers to contribute … role focuses on developing new novel architectures. Responsibility: • Designing and developing novel model architectures in-house • Post-training and adapting state-of-the-art open-source foundation models • Owning projects end-to-end, from initial research through to production Experience: • Strong ML research track record (publications, open ...

Senior WebExtensions Engineer (Remote UK)

Hiring Organisation
Jobleads-UK
Location
United Kingdom
managers, QA, and the AMO engineering team to deliver features end-to-end.* Contribute to Mozilla-owned extensions and system add-ons.* Participate in open source workflows: code reviews, pull requests, and discussions in Bugzilla/GitHub.* Support extension developers by helping diagnose issues and improving tooling/… shareholders — only to our mission. Along with thousands of volunteer contributors and collaborators all over the world, Mozillians design, build and distribute open-source software that enables people to enjoy the internet on their terms. **About this team and role:**The WebExtensions platform powers the add-ons ecosystem ...

Backend Developer

Hiring Organisation
scrumconnect ltd
Location
London, United Kingdom
Employment Type
Permanent
Salary
GBP 70,000 Annual
with message queues (Kafka, RabbitMQ) Exposure to Real Time systems or high-frequency data processing Nice to Have Experience with LLM APIs (eg, OpenAI, open-source LLMs) Knowledge of vector databases (FAISS, Pinecone) Experience with Kubernetes and container orchestration Contributions to open-source or strong GitHub ...

Senior Software Engineer (Hybrid) - 28022

Hiring Organisation
HII Mission Technologies Division
Location
Columbia, Maryland, United States
Employment Type
Permanent
Salary
USD Annual
company. Note: This role is not focused on training foundational AI models from scratch. Instead, you will take industry best practices, open-source capabilities, and large language models (LLMs), and build a secure framework that allows our other software capabilities to seamlessly leverage AI. You will work closely … years relevant experience. Applied AI Experience: Hands-on experience or a strong aptitude for integrating commercial LLM APIs (e.g., OpenAI, Anthropic) or open-source models into backend applications. Demonstrated understanding of modern applied AI concepts such as prompt engineering, function-calling/tool-use, and Retrieval-Augmented Generation ...

Senior Full Stack Engineer

Hiring Organisation
Prolo
Location
City of London, London, United Kingdom
analysis using Python (pandas, numpy) Understanding of data pipelines and ETL processes AI/LLM Engineering Experience integrating LLM APIs (OpenAI, Anthropic, Gemini, or open-source equivalents) into production applications Understanding of core LLM concepts: context windows, token limits, temperature, system prompts, and model selection trade-offs Experience … Experience building scalable backend systems Ability to work across multiple domains (backend, DevOps, data) Examples of taking projects from idea to production Contributions to open source or personal projects Note : Prolo is a startup with a small engineering team, which means you'll be expected to be versatile ...

Software Engineer (Hybrid) - 28021

Hiring Organisation
HII Mission Technologies Division
Location
Columbia, Maryland, United States
Employment Type
Permanent
Salary
USD Annual
company. Note: This role is not focused on training foundational AI models from scratch. Instead, you will take industry best practices, open-source capabilities, and large language models (LLMs), and build a secure framework that allows our other software capabilities to seamlessly leverage AI. You will work closely … years relevant experience. Applied AI Experience: Hands-on experience or a strong aptitude for integrating commercial LLM APIs (e.g., OpenAI, Anthropic) or open-source models into backend applications. Demonstrated understanding of modern applied AI concepts such as prompt engineering, function-calling/tool-use, and Retrieval-Augmented Generation ...

Lead Software Engineer, Back End

Hiring Organisation
Capital One
Location
Harrisonburg, Virginia, United States
Employment Type
Permanent
Salary
USD Annual
solutions that drive powerful experiences to help millions of Americans achieve financial empowerment Utilize programming languages like Java, Python, SQL, Node, Go, and Scala, Open Source RDBMS and NoSQL databases, Container Orchestration services including Docker and Kubernetes, and a variety of AWS tools and services Basic Qualifications: Bachelor … following: Java, Scala, Python, Go, or Node.js 2+ years of experience with AWS, GCP, Azure, or another cloud service 4+ years of experience in open source frameworks 1+ years of people management experience 2+ years of experience in Agile practices At this time, Capital One will not sponsor ...

Senior Growth Engineer

Hiring Organisation
Jobleads-UK
Location
Douglas, Northern Ireland, United Kingdom
role of a Senior Growth Engineer at Canonical Canonical has provided developers with open source since 2004, helping them build innovations such as public cloud, machine learning, robotics or blockchain. Marketing at Canonical means being at the forefront of technology adoption, for our customers … upgrades for long haul company events. About Canonical Canonical is a pioneering tech firm that is at the forefront of the global move to open source. As the company that publishes Ubuntu, one of the most important open source projects and the platform ...

Distinguished Engineer

Hiring Organisation
NetApp
Location
San Jose, California, United States
Employment Type
Permanent
Salary
USD Annual
looking for a Distinguished Engineer who will have the opportunity to work on building and scaling architecture and experience across multiple cloud environments, leveraging open-source technologies and delivering platform-as-a-service solutions that power mission-critical workloads. This is a technical leadership role that requires close … technical excellence. At least forty percent of the time will be devoted to producing tangible artifacts such as vision statements, design documents, and source code. Prior experience as a Principal or Senior Principal engineer working on high-scale, geo-distributed applications or services built on major cloud providers ...

Senior Software Engineer

Hiring Organisation
Jobleads-UK
Location
United Kingdom
interests, and the needs of the organization at the time of hiring: Code analysis : Maintaining detection support for multiple programming languages, including: building source code extractors that translate code written in each language into data that CodeQL can understand, keeping up with the latest version of each supported language … with clear focus on quality, reliability, and user experience. You will engage with internal users and external users (both from enterprise customers and the opensource community) to help them succeed with the product. You’ll influence and provide feedback on the organisational culture and processes, always looking ...

Senior AI Engineer - Google AI & Generative Intelligence

Hiring Organisation
Eclaro
Location
Paramus, New Jersey, United States
Employment Type
Permanent
Salary
USD Annual
Agents leveraging commercial LLMs such as Gemini (Google), GPT (OpenAI), and Claude Sonnet (Anthropic) for high-performance, large-context, and multimodal tasks. Work with open-source/self-hosted LLMs including Mixtral (Mistral AI). Architect and implement SLM-based solutions using lightweight models such … Write and debug code in VS Code with Python and GitHub Copilot extensions. Leverage GitHub Copilot for AI-assisted code suggestions and productivity. Manage source code with GitHub or GitLab. Enforce code quality and standards using SonarQube, ESLint, and Pylint. Testing & Quality Assurance: Conduct LLM-specific testing using RAGAS ...

Senior Associate, Data Scientist - Model Risk Office

Hiring Organisation
Capital One
Location
Chicago, Illinois, United States
Employment Type
Permanent
Salary
USD Annual
love asking questions and pushing hard to find answers. You're not afraid to share a new idea. Technical. You're comfortable with open-source languages and are passionate about developing further. You have hands-on experience developing data science solutions using open-source tools ...

Senior Associate, Data Scientist - Model Risk Office

Hiring Organisation
Capital One
Location
Richmond, Virginia, United States
Employment Type
Permanent
Salary
USD Annual
love asking questions and pushing hard to find answers. You're not afraid to share a new idea. Technical. You're comfortable with open-source languages and are passionate about developing further. You have hands-on experience developing data science solutions using open-source tools ...

Principal, Cloud Engineer - Observability

Hiring Organisation
Fidelity Investments
Location
Roanoke, Texas, United States
Employment Type
Permanent
Salary
USD Annual
that support our most critical digital services. You will work in a collaborative, transparent, and innovation-driven environment where engineering excellence, continuous learning, and open-source contribution are core to how we operate. This is a high-impact role where your expertise will influence platform architecture, engineering practices … interest in applying AI/ML techniques to observability (e.g., anomaly detection, predictive insights, intelligent alerting, or AIOps) Active participation in or contributions to open-source projects Strong background in performance optimization and distributed systems Why Join Us Work on mission-critical, high-scale platforms Be part ...

Principal, Cloud Engineer - Observability

Hiring Organisation
Fidelity Investments
Location
Pelham, New Hampshire, United States
Employment Type
Permanent
Salary
USD Annual
that support our most critical digital services. You will work in a collaborative, transparent, and innovation-driven environment where engineering excellence, continuous learning, and open-source contribution are core to how we operate. This is a high-impact role where your expertise will influence platform architecture, engineering practices … interest in applying AI/ML techniques to observability (e.g., anomaly detection, predictive insights, intelligent alerting, or AIOps) Active participation in or contributions to open-source projects Strong background in performance optimization and distributed systems Why Join Us Work on mission-critical, high-scale platforms Be part ...

Principal, Cloud Engineer - Observability

Hiring Organisation
Fidelity Investments
Location
Trophy Club, Texas, United States
Employment Type
Permanent
Salary
USD Annual
that support our most critical digital services. You will work in a collaborative, transparent, and innovation-driven environment where engineering excellence, continuous learning, and open-source contribution are core to how we operate. This is a high-impact role where your expertise will influence platform architecture, engineering practices … interest in applying AI/ML techniques to observability (e.g., anomaly detection, predictive insights, intelligent alerting, or AIOps) Active participation in or contributions to open-source projects Strong background in performance optimization and distributed systems Why Join Us Work on mission-critical, high-scale platforms Be part ...

Core Network Engineer 5G

Hiring Organisation
Eclaro
Location
Richardson, Texas, United States
Employment Type
Permanent
Salary
USD 125,000 Annual
infrastructure teams to support lab test-cells, and limited production radio deployments where required. Integrate, harden, and operate both vendor-supplied and open-source 5G core solutions (e.g. Open5GS, free5GC, Magma) in test, pre-production, and production environments. Contribute fixes, enhancements, and operational tooling where appropriate to support … control/user plane functions. Experience with open source 5G cores like Open5GS, free5GC, or Magma. Experience with Mongo database for opensource 5G solutions is a plus. Programming in at least one of the C, Python, Golang, Bash, or equivalent languages. Familiarity with containerization (Docker, Kubernetes ...

Principal Associate, Data Scientist - Mainstreet Acquisitions

Hiring Organisation
Capital One
Location
New York, United States
Employment Type
Permanent
Salary
USD Annual
enterprise to build data and modeling products that enable best in class credit analysis and customer-facing decisioning. Underwriting innovation is a key source of Capital One's competitive advantage - it is in our DNA. Our team continues to push that competitive edge through the use of new data … love asking questions and pushing hard to find answers. You're not afraid to share a new idea. Technical. You're comfortable with open-source languages and are passionate about developing further. You have hands-on experience developing data science solutions using open-source tools ...

Senior Ubuntu Embedded IoT System Engineer

Hiring Organisation
Jobleads-UK
Location
Douglas, Northern Ireland, United Kingdom
Senior Ubuntu Embedded IoT System Engineer Home based - EMEA Canonical is a leading provider of open source software and operating systems to the global enterprise and technology markets. Our platform, Ubuntu, is very widely used in breakthrough enterprise initiatives such as public cloud, data science, AI, engineering innovation … travel upgrades for long‐haul company events About Canonical Canonical is a pioneering tech firm at the forefront of the global move to open source. As the company that publishes Ubuntu, one of the most important opensource projects and the platform ...

Full Stack Software Engineer

Hiring Organisation
83zero Ltd
Location
City, London, United Kingdom
Employment Type
Permanent
Salary
GBP 100,000 - 130,000 Annual
architecture. In this role, you will empower the business with the technology and tools needed to leverage data throughout the organization. This Includes: Deploying open-source BI tools and platforms Setting up streaming data collection and validation services Implementing third-party analytic solutions Assisting with data-centric migration … implement solutions with minimal supervision Experience building internal-facing CRUD applications Familiarity with front-end development and ability to make basic modifications to open-source UI components Experience enabling data scientists and engineers with Python-based development workflows and tooling Technology Stack: Azure Cloud Services C# (.NET ...

Full Stack Software Engineer

Hiring Organisation
83zero Ltd
Location
London, Lime Street, United Kingdom
Employment Type
Permanent
Salary
£100000 - £130000/annum
architecture. In this role, you will empower the business with the technology and tools needed to leverage data throughout the organization. This Includes: Deploying open-source BI tools and platforms Setting up streaming data collection and validation services Implementing third-party analytic solutions Assisting with data-centric migration … implement solutions with minimal supervision Experience building internal-facing CRUD applications Familiarity with front-end development and ability to make basic modifications to open-source UI components Experience enabling data scientists and engineers with Python-based development workflows and tooling Technology Stack: Azure Cloud Services C# (.NET ...

Principal AI Data Scientist

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
Timeseries Forecasting models to solve complex enterprise business and planning challenges. Generative AI Architecture: Architect GenAI solutions, focusing on fine‐tuning proprietary and opensource Large Language Models (LLMs) via Transformer architectures for specialised enterprise data tasks. Next‐Gen Interfaces: Design and integrate Conversational AI and autonomous Agentic … analytics applications. Familiarity with Anaplan or similar enterprise planning platforms. Experience with A/B testing and experimentation frameworks for AI features. Contributions to opensource ML projects or research publications. Our Commitment to Diversity, Equity, Inclusion, and Belonging (DEIB) We believe at Anaplan that diversity, equity, inclusion ...

Senior Database Engineer

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
current estate includes Sybase (ASE, IQ & Rep), MS SQL, and Oracle. Expertise in Sybase and MS SQL is essential, while exposure to Oracle and open-source technologies is highly desirable. This is a hands‐on role for an experienced DBA who enjoys solving challenging problems, improving performance … scripting Scripting of DB snapshotting automation (leveraging REST APIs, Pure storage) Desirable: Experienced with Oracle technologies Good understanding of Kubernetes technology Knowledge of opensource technologies such as PostgreSQL, MySQL, MongoDB Project management experience Understanding of Intel Windows server technology (Windows 2022 administration) Basic understanding of current ...

Solutions Architect - Big Data and DevOps (f/m/d)

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
Stackable is an innovative technology company focused on delivering cutting-edge, opensource Big Data solutions for data lakehouses, data mesh, event processing and AI. We specialise in designing, deploying, and managing scalable datainfrastructures that empower businesses to harness the power of data effectively. Our core product, the Stackable Data Platform … looking for a skilled Solutions Architect with a strong background in Big Data to joinour team. The ideal candidate will have expertise in open source Big Data technologies and Kubernetes and DevOps practices . This role will be instrumental in designing, implementing, and optimizing cloud-based ...