The Trade Desk is a global technology company and the world’s leading independent platform for digital advertising, with nearly 4,000 employees across more than 30 offices. Our technology helps advertisers reach the right audiences across the open internet — from streaming TV and podcasts to mobile apps, news, and more.
Advertising powers the content people love. By making it more transparent, effective, and responsible, we help support trusted journalism, quality entertainment, and creators worldwide. The world’s brands and agencies rely on us to reach their customers and grow their businesses responsibly. The scale of our platform brings unique technical challenges — from processing massive datasets in real time to building systems that operate reliably on a global scale. When you work here, your impact is worldwide. We welcome diverse perspectives, encourage curiosity, and build teams that learn from one another. If you’re driven to solve meaningful challenges, we’d love to meet you.What we do
Janus is The Trade Desk's internal feature release platform — the engine behind how every product change reaches clients, from Alpha to General Availability. Our team owns the full stack of a high-availability system that integrates with hundreds of internal services and propagates config changes in near real-time. We shape how cross-functional teams across the company execute go-to-market, building workflows that let teams act independently and keep every feature launch on track. We hold engineering practices to a high standard and value people who are self-driven, take measured risks, and are motivated to help those around them.
What you'll do
- Own the design, development, and evolution of the Janus platform end-to-end, from frontend workflows to backend infrastructure
- Build self-service tooling that empowers cross-functional teams to act independently and reduce bottlenecks in the feature launch process
- Ensure platform reliability at scale: high availability, high-volume traffic handling, and near real-time config propagation across hundreds of integrated services
- Collaborate closely with stakeholders across the company to translate loosely defined requirements into reliable, well-engineered solutions
- Drive architectural decisions and set engineering quality standards for the team
- Contribute to a culture of good engineering practices, code quality, and knowledge sharing
Who you are
- Experienced building platform services, internal tooling, or developer infrastructure
- Skilled in distributed systems — you understand the trade-offs behind availability, consistency, and low-latency data propagation
- Comfortable navigating ambiguity — you can make progress with loosely defined requirements and multiple stakeholders
- Thoughtful about user experience — you think from the end user's perspective and can craft workflows that feel intuitive to non-technical users
- Self-driven — you take ownership, set your own direction, and follow through without close oversight
- Collaborative — you actively help teammates grow and succeed, not just deliver your own work
- Willing to take measured risks and advocate for decisions even when the path isn't fully clear
A variety of technical opportunities is one of the best things about working at The Trade Desk as a software engineer, which is why we do not expect you to know every technology we use when you start. What we care about is that you can learn quickly and find solutions to complex problems using the optimum tools for the job. What you know is less important than how well you learn and innovate. We are not seeking engineers who know all the answers; we need engineers who can invent answers no one has thought of yet and find answers to the questions yet to be asked.
The Trade Desk does not accept unsolicited resumes from search firm recruiters. Fees will not be paid in the event a candidate submitted by a recruiter without an agreement in place is hired; such resumes will be deemed the sole property of The Trade Desk. The Trade Desk is an equal opportunity employer. All aspects of employment will be based on merit, competence, performance, and business needs. We do not discriminate on the basis of race, color, religion, marital status, age, national origin, ancestry, physical or mental disability, medical condition, pregnancy, genetic information, gender, sexual orientation, gender identity or expression, veteran status, or any other status protected under federal, state, or local law.
As an Equal Opportunity Employer, The Trade Desk is committed to creating an inclusive hiring experience where everyone has the opportunity to thrive.
Please reach out to us at accommodations@thetradedesk.com to request an accommodation or discuss any accessibility needs you may require to access our Company Website or navigate any part of the hiring process.
When you contact us, please include your preferred contact details and specify the nature of your accommodation request or questions. Any information you share will be handled confidentially and will not impact our hiring decisions.
- £143k - £186k per annumEstimated...At Longshot Systems we build advanced platforms for sports betting analytics and trading. We’re looking for a Senior Software Engineer to join the team that owns and develops our trading platform. Longshot is a small, focused company and so the role suits someone who can...SeniorOdd jobLong-term contractHybrid workingOn-siteMonday to FridayFlexible hours1 day/week
£82.5k - £114.8k per annum
...keep investing in our market-leading platform and serving incredible customers like... ...in that context, we are looking for a Senior Backend Engineer, with a heavy focus on infrastructure... ...joining a newly formed team of two senior software engineers, one manager, all of whom...SeniorHybrid workingOn-siteRemoteFlexible hours- £67k - £88k per annumEstimated...Postman is the world’s leading API platform, used by more than 45 million+ developers... ...The Client Platform team is seeking a Senior Frontend Engineer to join our UI Platform charter and help... ...~5-10 years of professional software engineering experience ~2+ years in...SeniorLong-term contractHybrid workingOn-siteImmediate start5 days/weekFlexible hours
£87.5k - £111k per annum
...will be working with: Acquiring Platform The Acquiring Platform team... ...have real weight, and senior enough that you'll have strong... ...and career growth support. For engineers who want to work on fintech infrastructure... ..., Fintech, Forex, Sharing Economy Functions: Software EngineeringSeniorFull-timeHybrid working- £108k - £143k per annumEstimated...innovation and a willingness to challenge consensus. UP (Unified Platform) consolidates data and technologies into a comprehensive... ...UP teams are segmented into multiple areas including domain engineering. Teams within domain engineering have critical capabilities that...SeniorLong-term contract
- £70k - £90k per annumEstimated...Senior Software Engineer - Machine Learning Platform Join us in our mission to transform the way people shop and eat, where impact, innovation and growth drive everything we do. Our Engineering teams tackle complex technical challenges across a global, three-sided marketplace...SeniorLong-term contractFull-timeHybrid workingFlexible hours
$175k - $225k per annum
...expectations, integrity, innovation and a willingness to challenge consensus. We are seeking a Senior Software Engineer to join our Reference Data team in the Unified Platform (UP) organization as part of our efforts to build a mid-frequency platform . UP consolidates...SeniorLong-term contractTemporaryHybrid working- £74k - £94k per annumEstimated...Description About the role We're looking for a Senior Backend Engineer to build and scale Wise's price comparison platform. Comparison is about transparency—helping... ...for (Must have) ~5+ Years of working as a software engineer ~ Solid knowledge of relational databases...SeniorFull-time
£65k - £90k per annum
...Role Overview As a Senior Software Engineer, you’ll take ownership of key components in Motilent’s advanced medical imaging platform, ensuring our viewer technology remains robust, performant, and scalable. You’ll collaborate closely with engineers, solution architects...SeniorPermanentFull-timeHybrid workingOn-siteRemoteWork from homeFlexible hours- £36k - £48k per annumEstimated...Why work for us? A career at Janus Henderson is more than a job, it’s about investing in a brighter future together.... ...would love to hear from you! Your opportunity As a Senior Engineer within Platform Engineering, you will lead the design, build, and evolution...SeniorHybrid workingFlexible hours
£65k - £95k per annum
...Role Overview As a Senior Platform and Services Software Engineer (title negotiable), you’ll play a key role in designing, building, and maintaining the platform and services that power Motilent’s medical imaging analysis and visualisation platform. You’ll work across...SeniorPermanentFull-timeHybrid workingOn-siteRemoteFlexible hours- £68k - £90k per annumEstimated...exchange team develops and maintain a cutting-edge trading platform. With a global presence across APAC, EMEA and North America,... ...seamless and secure trading experience for our clients. As a Senior Devops Engineer, you will be involved a number of technically challenging...SeniorFull-time
- £64k - £84k per annumEstimatedThe exchange team develops and maintain a cutting-edge trading platform. With a global presence across APAC, EMEA and North America, the team has since grown with the goal to provide a seamless and secure trading experience for our clients.SeniorFull-time
- £63k - £83k per annumEstimated...help clients transform energy markets, modernise financial platforms, expand telecoms and digital networks through advanced... ...impact. What you will be doing We are looking for a Senior Platform Software Engineer to join as a core member of the Data and Processing Platform...SeniorHourly payHybrid workingFlexible hours
- £89k - £118k per annumEstimated...microservices; React powers the front-end. We're seeking a Senior JavaScript/TypeScript Engineer to join our team as we scale to more users within the... ...of a growing system. Requirements: Strong software engineering background Strong experience in JavaScript...SeniorOn-site
£145k - £182k per annum
...Description About the role: We are looking for a Senior Staff Engineer (IC5) to join our Risk Assessment Platform squad. Our mission is to build a platform that... ...--- Sector: Fintech Subsectors: Marketplace, Fintech, Forex, Sharing Economy Functions: Software EngineeringSeniorLong-term contractFull-timeHybrid working£70k - £75k per annum
...Develop, maintain, and optimise platform infrastructure to ensure scalability and performance. Collaborate with cross-functional teams to implement technology solutions that meet business needs. Monitor and manage system performance, ensuring reliability and uptime....SeniorPermanent- £103k - £136k per annumEstimated...challenge consensus. DRW is looking for an outstanding Software Engineer with an expertise in C++ to work in our London office. In this... ...designing, developing and maintaining DRW's low latency trading platform which is deployed global. You will be tasked with working on...SeniorOn-site
- £55k - £73k per annumEstimated...judgement, and channel your creativity into a platform used by millions. Everyone needs... ...Job Description As a Senior AI Engineer, you will be part of the AI Platform team... ...operational readiness. Applying CI/CD and software engineering best practices to AI platform...SeniorExtra incomeFull-timeFlexible hours
- £105k - £139k per annumEstimated...Job Description If you are a software engineering leader ready to take the reins and drive impact, we’ve got an opportunity just for you. As a Senior Lead Software Engineer at JPMorganChase within the AI/ML & Data Platforms group, you lead a technical area and drive...SeniorLong-term contract
- £74k - £98k per annumEstimated...Make Your Mark as an Engineering Manager II (Domain Platform Engineering & AI) at Storio group About the role You will lead our Domain Platform Engineering and AI team in London. This team acts as the backbone for our data consumers across Marketing, Finance, Operations...SeniorPermanent
€90k - €110k per annum
...a team spanning technology, industrial engineering, mining, decarbonisation, digital innovation... ...climate-positive future, and we need a Platform Engineer who creates real leverage -... ...infrastructure-as-code the way others write software. Professional Python You build...SeniorLong-term contract£325k per annum
...growing group of committed researchers, engineers, policy experts, and business leaders working... ...serve frontier AI models. The Kubernetes Platform team owns the Kubernetes control plane... ...Minimum qualifications Significant software engineering experience building and operating...SeniorLong-term contractHybrid workingVisa sponsorshipOn-siteFlexible hours£75k per annum
...Specialism Platform Engineering Job type Permanent Location London, North East, North West, South East, South West Salary £75,000 - £90,000 per annum Join an ever growing global company, at the heart of modern platform engineering. You will be joining...SeniorPermanent- £79k - £100k per annumEstimated...We are looking for a Senior Backend Platform Developer to build modern services for Navan’s contact center systems. This is a software engineering role first: where you will design APIs, serverless services, data flows, observability tooling, and AI-enabled workflows that...Senior
- £69k - £90k per annumEstimated...invested in Kubernetes and training If option C sounds tempting, we've got better news. How about joining an engineering team building a massive, standardised platform across 15 regions—powered by Kubernetes on AWS. Scale? Huge! Over 100 million monthly visitors. We're...SeniorRemote jobPermanentImmediate start
£80k - £100k per annum
...Want to join a company that truly invests in its engineers? You’ve come to the right place. You’ll be joining a global organisation building a Centre of Excellence for Platform Engineering. So far, 260 of their 300 engineers have earned the CKA, all fully funded by the company...SeniorHybrid working£65k - £85k per annum
...rebuilt. Not just upgraded, but completely reimagined. And behind every great revolution in tech is a rock solid platform. We are looking for a Senior Platform Engineer. Someone who doesn’t just keep the engine running but designs the machine. You will help shape the...SeniorLong-term contractPermanentHybrid working- £70k - £93k per annumEstimated...Complexio’s Foundational AI platform automates business processes by ingesting and understanding... ...automation. We are looking for a Senior Platform Engineer (Developer Experience) to establish... ..., document and maintain end-to-end software development processes, including...SeniorRemote job
- £91k - £117k per annumEstimated...throughput Linux based services Integrating and maintaining pricing models for trading and risk calculation within the core technology platform Potential to work with other services in the platform like order, trade, position managers, product reference and market data...Senior
Do you want to receive more vacancies?
Subscribe and receive similar vacancies to Senior Software Engineer - Janus Platform. Be the first to apply!
- senior program manager hybrid London
- senior lecturer health economics London
- senior level designer London
- senior marketing content strategist and copywriter London
- senior commissioning engineer London
- senior process development scientist London
- senior digital marketing specialist London
- senior broadcast engineer London
- senior building surveyor at brandon james London
- audit senior audit executive London
