151 to 175 of 189 Open Source Jobs in England

Founding Head of Telco

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
coding assistant, but our own models, agent stack, eval harnesses, and product layer. We build our agent tooling entirely in-house and post-train open-source models to deliver reliable, enterprise-grade coding performance in security-critical settings. Our offerings can be used as SaaS, deployed … engineering inside telco-controlled infrastructure. Helping telcos compete with hyperscalers by offering AI coding capabilities that run on their own infrastructure. AI adoption where source code, credentials, operational data, or infrastructure cannot leave the customer’s control boundary. Monetisation of GPU, cloud, and sovereign infrastructure investments through AI developer ...

Head of Finance (Interim)

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
what we're building with YOLO. Nice to have Experience supporting a Series A or B fundraise. Exposure to SaaS, deep tech, or opensource business models. Familiarity with employment law, HR operations, or benefits admin. Experience working with legal teams on commercial contracts. Knowledge of scaling tools … improvement. Strive for excellence: Perseverance and attention to detail. Actions, not words: Focus on delivering meaningful results. Act with urgency: Seize fleeting opportunities. Open access to all: Transparent communication and collaboration. Compensation and benefits We reward excellence and impact — not just tenure or title. Competitive salary: Reflecting your experience ...

Senior Software Engineer

Hiring Organisation
17918
Location
Cheltenham, Gloucestershire, United Kingdom
Senior Software Engineer you will help lead the development of back end platforms and services by leveraging the latest commercial and open-source technologies in private and public cloud environments. Duties & Responsibilities Design, develop, document, deploy and enhance features to our platforms and services that meet functional/ ...

Lead/Principle Software Engineer

Hiring Organisation
17918
Location
Gloucester, Gloucestershire, United Kingdom
Data Platforms The Role As a Software Engineer, you will play a key role in developing backend platforms and services using modern commercial and open-source technologies across both private and public cloud environments. Working within an Agile, cross-functional team, you will contribute to impactful projects that ...

Senior Software Engineer

Hiring Organisation
Sanderson Government and Defence
Location
Cheltenham, Gloucestershire, United Kingdom
Employment Type
Permanent
Salary
GBP 90,000 Annual
Senior Software Engineer you will help lead the development of back end platforms and services by leveraging the latest commercial and open-source technologies in private and public cloud environments. Duties & Responsibilities Design, develop, document, deploy and enhance features to our platforms and services that meet functional/ ...

Lead/Principle Software Engineer

Hiring Organisation
Sanderson Government and Defence
Location
Gloucestershire, United Kingdom
Employment Type
Permanent
Salary
GBP 100,000 Annual
Data Platforms The Role As a Software Engineer, you will play a key role in developing backend platforms and services using modern commercial and open-source technologies across both private and public cloud environments. Working within an Agile, cross-functional team, you will contribute to impactful projects that ...

Software Engineer

Hiring Organisation
Platform Recruitment
Location
London, United Kingdom
Employment Type
Permanent
Salary
£80000 - £115000/annum
commercial C++ expertise Significant bias towards C++ development Genuine passion for writing clean, performant code Bonus if : Commercial C++ experience Have worked on open-source projects Have an activity portfolio of personal C++ projects Full details are available. Please don't hesitate to get in touch. ...

Lead AI Architect

Hiring Organisation
Jobleads-UK
Location
Cambridgeshire and Peterborough, England, United Kingdom
architectures, memory bandwidth constraints, and large-scale workload simulation Desirable Assets: Practical familiarity with distributed inference frameworks, cluster optimization, data center infrastructure, or open-source systems software What is offered A defining leadership position within a heavily backed, scaling technology enterprise Highly competitive salary package, pension, and comprehensive ...

Client Solutions Consultant

Hiring Organisation
BrighterBox
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£31,000 - £35,000 per annum
Experience with SaaS platforms or client delivery work Working with data or analytics Interest in Regtech, AI or risk intelligence Any familiarity with open-source research or due diligence Interview process: Initial interview - focused on motivations and communication style (virtual or in person) Timed remote task - testing your ...

Tetragon Engineering Manager - Isovalent

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
optimization. Strong experience in networking protocol analysis or experience in developing networking switches (e.g., L2/L3 protocols like ARP, DHCP, SNMP) Contributions to opensource projects in networking, observability, or distributed systems. Experience working across diverse, distributed teams Cisco is an affirmative action and equal opportunity employer ...

Head of Engineering

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
moving at startup speed Establish a culture where iteration is celebrated and perfectionism is challenged How we work at Lightdash We build in public. Open source means moving fast with shared context. We challenge problems, not people. No blame, just solutions. We’re highly collaborative. Independent ...

Vice President, GTM EMEA

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
high‐growth environment. Preferred Qualifications Experience selling into the modern data stack ecosystem (Airflow, dbt, Snowflake, Databricks, Kafka, or similar). Familiarity with opensource‐led or product‐led growth (PLG) sales motions — understanding how to convert community users into enterprise buyers. Experience building or expanding a cloud ...

EMEA Deal Strategy & Operations Manager

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
real world, helping developers move from prototypes to production‐ready AI agents that teams can rely on. We began as widely adopted opensource tools and have grown to also offer a platform for building, evaluating, deploying, and operating agents at scale. With $125M raised at Series ...

Founding Engineer - Early Careers

Hiring Organisation
Tracebit
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£50,000 - £70,000 per annum
known language, and is genuinely curious about how things work under the hood. Has built things they're proud of - side projects, open source, hackathons... And is excited by the pace and rate of change that is inevitable in any successful, early stage startup. Gets their energy from ...

Forward Deployed Engineer (New Grad)

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
ambiguous. Entrepreneurial spirit. You’ve spent time building things outside of structured coursework such as working on a startup, founding or contributing to an opensource projects, or shipping personal projects end‐to‐end. Clear communicator. You can explain technical ideas clearly, ask good questions, and enjoy working ...

Solution Architect - Customer Identity and Access Management

Hiring Organisation
Certain Advantage
Location
South East London, London, United Kingdom
Employment Type
Contract
Contract Rate
£600 - £800 per day
Strategic Roadmap and applies within the context of their organisational assignment. Uses the related reference architectures and roadmaps for Cloud, Mobile, Integration, OpenSource, Big Data, etc. Does this sound like your next career move? Apply today! Working with Certain Advantage We go the extra mile to find the best people ...

Senior Lead Digital Tester

Hiring Organisation
Herefordshire and Worcestershire Health and Care NHS Trust
Location
Worcester, WR5 1JR, United Kingdom
Salary
£39959.00 to £48117.00
working in fast changing technology environment, with demonstrable experience of adapting to change and learning new technologies quickly. Desirable Experience of working with opensource test tools. Qualifications Essential Educated to post graduate diploma level or equivalent or able to demonstrate substantial experience of performing to an equivalent level ...

In House Counsel: Open Source Licensing & AI Contracts

Hiring Organisation
17918
Location
London, United Kingdom
p Ultralytics in London is hiring its first in house lawyer to build a legal function from scratch, shaping AGPL 3.0/Enterprise licensing, drafting and negotiating agreements, and guiding compliance across jurisdictions./p ...

Senior Engineering Manager (Maternity Cover)

Hiring Organisation
Jobleads-UK
Location
Leeds, England, United Kingdom
requires a solid technical and managerial background, experience with agile delivery, and the ability to lead across distributed systems, while fostering a high-performance, open-source–minded #J-18808-Ljbffr ...

Remote Site Reliability Engineer (GitOps)

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
global SRE team, work remotely in any timezone, and contribute to observability, monitoring, and incident response across Canonical's infrastructure. Experience with Linux, open-source stacks, and cloud platforms is essential. #J-18808-Ljbffr ...

Cyber Threat Intelligence Analyst

Hiring Organisation
Henderson Scott
Location
London, United Kingdom
Employment Type
Contract
closely related security issues. Familiarity with cyber threat frameworks, for example MITRE ATT&CK, the Diamond Model and the Intelligence Cycle. Experience using open-source and commercial research methods, threat intelligence platforms or security tooling. Strong analytical skills with the ability to recognise patterns and reach balanced, well ...

Cyber Threat Intelligence Analyst (x2) - DV Cleared - Contract

Hiring Organisation
Sanderson Government and Defence
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£680 - £780 per day
months Clearance: UKSV DV Essential Familiarity with cyber threat frameworks - for example, MITRE ATT&CK, Diamond Model, and the Intelligence Cycle Experience using open-source and commercial research methods, threat intelligence platforms or security tooling. Experience of working in an intelligence role, with practical application of the intelligence ...

Inference Engineering - API Platform Architect

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
feel for how different workload types place different demands on the infrastructure around them Experience running production API infrastructure that meets high‐assurance standards Opensource contributions to relevant infrastructure, or production systems whose scale and complexity you can speak to in detail Early‐stage and AI‐native ...

Senior Principal Engineer (iOS)

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
audiences ranging from hands‐on engineers to senior and executive stakeholders. Have an active presence within the wider iOS engineering community through speaking, mentoring, open-source contributions or community engagement, although this is not essential. More information Enjoy fantastic perks like private healthcare and dental insurance, a generous ...

Director of Brand

Hiring Organisation
Jobleads-UK
Location
City Of London, England, United Kingdom
your projects from concept to completion. Value a culture of openness, collaboration, and constant evolution. Bonus Points: Experience in SaaS, AI‐enabled systems, or opensource communities, but a "growth mindset" and curiosity matter most. Life at Gravitee At Gravitee, we invest in humans, not just roles . ...