Senior Contract Software Engineer (JavaScript) - Firefox
£48.8 - £54.6 per hourEstimated
Full-time
The role
You will help the Firefox DOM Core team improve the health of the Session History area. You will write tests to improve the coverage; you will fix tests and/or problems to improve the Gecko correctness.
Responsibilities
- Write Web-Platform tests to improve the coverage, and Gecko mochitests as needed
- Fix the problems and pass the tests to improve the Gecko correctness
- Work through code review with the relevant Gecko module owners and iterate to landing
Definition of done
Improved Session History test coverage and code correctness in Gecko, measured by passed test cases, allowing the team’s senior engineers to focus on security, performance and strategic projects.
Required qualifications
- Substantial experience in a browser-engine codebase or in automating for a browser-engine, ideally Firefox/Gecko.
- Solid Javascript and applying that language skill to write automated tests.
- Proficiency in and experience developing software in C++.
- Strong debugging skills in a mature larget codebase.
- Comfort working in the open: public bugs, code review, and upstream landing.
Preferred
- Prior contributions to Gecko or another major browser engine.
- Familiarity with web standards and Web Platform Tests.
Vacancy posted 3 days ago
Similar jobs that could be interesting for youBased on the Senior Contract Software Engineer (JavaScript) - Firefox in United Kingdom vacancy
£600 per day
...Senior TypeScript Engineer (Node.js, AWS Serverless), FinTech Location: London, Manchester... ...months About Codurance We're a software craftsmanship consultancy. We build software... ...role We're looking for a senior contract engineer to work on a financial...SeniorSoftwareHybrid workingFlexible hours- £80k - £108k per annumEstimated...The role You will help the Firefox DOM LWS team to implement tasks for Storage Encryption everywhere, helping to drive the in-progress... ...Strong C++. Substantial experience in a browser-engine codebase, ideally Firefox/Gecko. Substantial experience in databases...SoftwareFull-timeNight shift
- £50k - £67k per annumEstimated...Software Contract About Thea Energy: Thea Energy is leveraging recent breakthroughs in stellarator physics and engineering to create a faster and simpler approach to commercializing fusion energy... ...: Thea Energy is looking for a Senior VFX Network Engineer contractor...SeniorSoftwareFull-time
- £54k - £73k per annumEstimated...re Dayshape—an award-winning software scale-up with big ambitions and... ...you come in. As part of our Engineering team, your key areas of focus... ...our customers' success. As a senior engineer, you will work... ...performant frontend business logic in JavaScript - Write and upgrade UI...SeniorSoftwareLong-term contractFull-timeFlexible hours
- £74k - £101k per annumEstimated...is a pioneering company that engineers best-in-class, cutting-edge solutions... ...and innovation. Sr. Software Engineer — Prebid & Header... ...problem solver, have significant JavaScript experience, and you know what... ...position is for you. As a Senior Software Engineer at Freestar...SeniorSoftwareFull-timeRemote
- £45k - £61k per annumEstimated...Senior Software Engineer – JavaScript, React A fantastic opportunity for talented Software Developers, to join an industry-leading software company in either London or Cambridge offering the opportunity to work on a wide variety of web application infrastructure projects...SeniorSoftwareFull-timeOn-siteRemote
- £46k - £62k per annumEstimated...including QA) to turn reporting and triage needs into reliable tooling. Required qualifications Solid web development (JavaScript, HTML, CSS, Python & Django) and experience building dashboards / data views. Comfort with tooling, automation, and web services...SoftwareFull-time
$100 per hour
...equivalent professional experience Demonstrated expertise in Software Engineering How long hiring takes Across the platforms we work... ...~80% Why this role At $100/hr, this Technical Lead / Senior Contract Engineer Expert position compensates Software Engineering...SeniorSoftwareHourly payRemoteEthos
Remote28 days ago- £80k - £104k per annumEstimated...make pioneering brands like Firefox, the privacy-minded web browser... ...and distribute open-source software that enables people to enjoy... ...experience in low-level software engineering, strong proficiency in C and/... ...web technologies (HTML, CSS, JavaScript) and interest or experience...SeniorSoftwareFull-timeImmediate start
- Senior Netsuite Developer Our Client is a leading company who are looking to recruit a Senior Netsuite Developer with Javascript and SQL with extensive Netsuite OneWorld expertise. You will have... ...OneWorld. Experience of full software delivery lifecycle including capturing...SeniorSoftware
- £57k - £73k per annumEstimated...W Scalo zajmujemy się dostarczaniem projektów software'owych i wspieraniem naszych partnerów w rozwijaniu ich biznesu. Tworzymy... ...ug: komercyjne doświadczenie jako Fullstack Software Engineer na poziomie Regular+ lub Senior, bardzo dobra znajomość React i TypeScript,...SeniorSoftware
- £57k - £77k per annumEstimated...Are you a talented Senior Developer looking for a remote job that... ...already paid out over $11M to our engineers. No more hunting for clients... ...Python Position: 4+ years of software development experience.... ...& Angular, Python, Symfony & JavaScript & Next.js & TypeScript, Data...SeniorSoftwareFull-timeRemote
- £75k - £101k per annumEstimated...alongside the biggest names in enterprise software. Built 100% on the Salesforce platform.... ...accelerating our delivery velocity. We need senior-caliber Node. js developers who can own... ...augmentation seat. You will work directly with engineering leadership, product managers, and the CEO...SeniorSoftwareFull-time
$100 - $200 per hour
...Contract | Remote, worldwide | $100-$200/hour depending on experience and location | 10-... ...We're looking for highly experienced software engineer (SR+) to help evaluate the quality of interactions... ...them clearly. Who you are • Senior, Staff or Principal-level engineer (or...SeniorSoftwareRemoteFlexible hoursG2i
Remote23 days ago- £71k - £95k per annumEstimated...Software Development Contract [Remote] About Anovium Anovium is a product-focused digital innovation agency and consultancy. We empower... ...pivoting and iterating when faced with failure. Senior React Native Engineer TL/DR: You are a React Native Engineer skilled in...SeniorSoftwareLong-term contractFull-timeRemote
£65k - £75k per annum
Company: CORRICULO LTD Job Type: Permanent Salary: £65000 - £75000 / annuallySeniorSoftwarePermanentRemote£80k per annum
...Senior FrontEnd Developer – Javascript / Reactjs An exciting career opportunity to join a huge UK News Publisher – based in Central London. The... ...environment and will have the opportunity to develop new software and writing own code to deliver commercial products to support...SeniorSoftwarePermanent£70k - £90k per annum
Senior Front End D3 Javascript Software Engineer - Holborn Our Client wants to recruit a Senior Front End Software Developer with at least 7 to 10 years expertise of working with D3 React and Javascript. You will be involved with creating sophisticated, robust and easy...SeniorSoftwareFull-time- ...We are looking for an experienced Senior Angular Developer to join our frontend engineering team. You’ll take ownership of complex features, contribute to technical... ..., performance and responsive design. Strong software engineering and problem-solving skills. Excellent...SeniorSoftwareHybrid workingFlexible hours
- £64k - £86k per annumEstimated...money. We work primarily in React Native to make complex financial experiences intuitive, fast, and trustworthy. Our product-minded engineers work closely with Product and Design to understand client problems, challenge assumptions, shape solutions, and measure whether what...SeniorSoftware
- £54k - £69k per annumEstimated...experienced and highly skilled back-end Senior Online Developer to join our tech... ...web APIs to support our game engine team. The successful candidate... ...team and user their specialist JavaScript knowledge to be involved in the entire software development lifecycle, from...SeniorSoftwareOngoing contractPermanentFull-timeTemporaryRelocation packageOn-site1 day/week
- £81k - £106k per annumEstimated...Senior Software Engineer - Java, Node.js & AWS Build software that matters. Shape the future of engineering. We're looking for an experienced Senior Software Engineer - Java, Node.js & AWS who is passionate about building scalable, high-quality software and helping teams...SeniorSoftwareLong-term contractFull-timeHybrid workingOn-siteRemoteFlexible hours
€70k - €120k per annum
...RESPONSIBILITIES You will join and work on our book editing tool. Here's what you'll do: - Work closely with our designers and engineers to design, build, and ship new features from scratch; - Extend the growing feature set of our cutting-edge, collaborative word processor...SeniorSoftwareFull-timeRemoteWork from home£100k - £135k per annum
...Senior Product Engineer, React Native Location: Nine Elms, London. Full time, hybrid with at least... ...-first company We don't just build software. We build intelligent systems. From AI... ...complete reference checks before the contract. Benefits ~£100,000 – £135,000 base...SeniorSoftwareFull-timeHybrid workingOn-site- £76k - £103k per annumEstimated...Software Development Full-time [Remote] About Anovium Anovium is a product-focused digital innovation agency and... ...swiftly pivoting and iterating when faced with failure. Senior Javascript Node Fullstack Engineer TL/DR: You are an Engineer skilled in Backend...SeniorSoftwareLong-term contractFull-timeRemote
- £75k - £99k per annumEstimated...You will help reduce Firefox’s WebCompat bug backlog by finishing or verifying the diagnosis of the long tail of site-breakage bugs, and... ...reports. Required qualifications - Solid web development (HTML, CSS, JavaScript) and comfort debugging real-world site breakage. - Fluent with...SoftwareFull-time
- £54k - £73k per annumEstimated...React Native Developer to join our growing engineering team. In this role, you will be... ...demonstrating a deep understanding of the entire software development lifecycle. REQUIREMENTS... ...: Expert-level proficiency in JavaScript and TypeScript. Deep understanding of React...SeniorSoftwareFull-timeRemoteFlexible hours
- £52k - £70k per annumEstimated...London, Bath or Edinburgh. Your contract will be hybrid, although we... ...from the team. Our Engineering Ways Of Working Our Product... ...teams responsible for the full software lifecycle, from architecture... ...investment operations. As a senior member of the team, you are the...SeniorSoftwareLong-term contractFull-timeHybrid workingOn-siteImmediate startFlexible hours
£88k per annum
...highly sensitive health and genetic data, and we are continuing to grow our engineering capability to support this ambition. We are hiring a backend leaning full-stack focused Senior Software Engineer to join our Research Enablement squad . This squad sits on the intersection...SeniorSoftwareLong-term contractFull-timeHybrid workingOn-siteImmediate startRemoteFlexible hours- £95k - £125k per annumEstimated...that celebrates diversity, inclusion, and respect. As a Senior Lead Software Engineer in the PTT team, you will play a pivotal role in enhancing... ...Expertise in Kubernetes Proficiency in ReactJS and JavaScript Functional knowledge of FX or Dervis Settlements domain...SeniorSoftwareLong-term contract
Do you want to receive more vacancies?
Subscribe and receive similar vacancies to Senior Contract Software Engineer (JavaScript) - Firefox. Be the first to apply!
Related searches
- contract software engineer United Kingdom
- contract mechanical engineer United Kingdom
- contract maintenance engineer United Kingdom
- subcontractor engineer United Kingdom
- contractors engineering manager United Kingdom
- contracts engineer United Kingdom
- contract network engineer United Kingdom
- lead front end developer javascript United Kingdom
- software engineer javascript United Kingdom
- javascript developer United Kingdom