> Markdown version of [/jobs/ext/3061668-software-engineer-i](https://www.wearedevelopers.com/jobs/ext/3061668-software-engineer-i). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Software Engineer I - **Company:** Kargo-working - **Location:** UK - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** JavaScript (Programming Language), PHP (Programming Language), Artificial Intelligence, Airflow, Amazon Web Services, Big Data, Cloud Computing, Code Review, Python (Programming Language), Node.Js, Software Engineering, Technical Debt, Kubernetes, Service Stack, Golang, Programming Languages - **Published:** September 25, 2026 - **Apply:** https://startup.jobs/senior-software-engineer-i-kargo-company-10162293 ## About the Role Techies who want to build the future. Creatives who want to design it better. Communicators to win business. Collaborators to build it. Data pros who turn numbers into insights. Product builders who turn ideas into innovations. Anyone eager to be on a team that doesn't stop to ask what's next, because they're already building it., * 5+ years of experience in a software engineering role, with experience leading teams and initiatives * A background developing client- and server-side solutions in ad tech * Strong command of a major modern programming language (we work with Golang, JavaScript/NodeJS, PHP, and Python, but direct experience with these isn't required) * Proficiency with AI tools and workflows, plus a solid understanding of the Software Development Life Cycle, including QA and deployment processes * Comfort working directly with business stakeholders to define, prioritize, and deliver against evolving requirements * Experience querying large datasets to understand trends, optimize delivery, and troubleshoot issues; comfortable pairing and giving and receiving code reviews * Experience with cloud technologies (AWS, Apache Airflow, Dockerized Kubernetes environments) is a plus ## Description Kargo is hiring a Senior Software Engineer to join our multidisciplinary in-app ad delivery team, spanning client-side and server-side engineering across multiple technology stacks, frameworks, and languages. This role will help lead the In-App team in delivering net-new integrations that maximize in-app revenue at Kargo-working on systems that handle billions of ad requests and help clients deliver and make informed decisions from millions of ads. The Daily To-Do * Take ownership of key In-App initiatives and ship against the product roadmap, driving in-app projects on the team and across Kargo * Launch net-new in-app integrations to maximize in-app revenue, iterating and innovating on in-app ad delivery, measurement, and management across a variety of technology stacks * Establish stable, dedicated engineering ownership for In-App ad delivery-building redundancy and technical depth so development, maintenance, and production support have sustainable coverage * Improve the reliability and maintainability of In-App and video ad delivery, quickly identifying technical debt, operational risks, and recurring support issues and driving them toward resolution * Provide dedicated engineering support for Online Video (OLV), ensuring emerging maintenance, feature, and production needs have clear ownership * Strengthen knowledge sharing and documentation across the stack, making In-App and OLV systems easier for the broader team to support * Collaborate across the full lifecycle of full-stack development-from ideation to delivery of high-quality, best-in-class capabilities that give our team and customers an edge in the market ## Related Videos - [The user in the eye of the Cargo1492 storm](https://www.wearedevelopers.com/videos/96-the-user-in-the-eye-of-the-cargo1492-storm) - [From Messy Queries to Scalable Systems - How Data Engineering actually works](https://www.wearedevelopers.com/videos/100203-from-messy-queries-to-scalable-systems-how-data-engineering-actually-works) - [Go with the Flow: Stop the Leaks Before Your Memory's a Waterfall!](https://www.wearedevelopers.com/videos/100073-go-with-the-flow-stop-the-leaks-before-your-memory-s-a-waterfall) - [Stop using Node.js like in 2020! What changed and what you can do today with Node.js](https://www.wearedevelopers.com/videos/100011-stop-using-node-js-like-in-2020-what-changed-and-what-you-can-do-today-with-node-js) - [Retooling and refactoring - an investment in people.](https://www.wearedevelopers.com/videos/371-retooling-and-refactoring-an-investment-in-people) - [WeAreDevelopers LIVE – AI, Freelancing, Keeping Up with Tech and More](https://www.wearedevelopers.com/videos/1786-wearedevelopers-live-ai-freelancing-keeping-up-with-tech-and-more) ## Related Articles - [The 12 Best Jobs for Software Engineers](https://www.wearedevelopers.com/magazine/401-the-12-best-jobs-for-software-engineers) - [Highest Paying Tech Companies for Developers](https://www.wearedevelopers.com/magazine/220-highest-paying-tech-companies-for-developers) - [Best Countries for Software Engineers](https://www.wearedevelopers.com/magazine/267-best-countries-for-software-engineers) - [Is Software Engineering Hard?](https://www.wearedevelopers.com/magazine/448-is-software-engineering-hard) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated) - [Dev Digest 120 - Apple and peers](https://www.wearedevelopers.com/magazine/455-dev-digest-120-apple-and-peers)