Senior Software Engineer (Autopsy)

As a Senior Software Engineer in Team Autopsy, you will build automation and optimization capabilities that help our customers save time, improve campaign performance, and reduce the manual work required to manage advertising campaigns at scale. Team Autopsy owns several core services at the heart of the Smartly platform, including Triggers, Ad Rotation, Smartly Actions, and Action Router. These systems enable customers to automate campaign management, optimize advertising performance, and reliably execute changes across multiple media platforms. As an independent fullstack team operating in the middle of the Smartly product ecosystem, we work closely with product managers, designers, and engineering teams across the company to deliver scalable solutions that create customer value. Our technology stack includes TypeScript, Python, Node.js, NestJS, Koa, PostgreSQL, Redis, Kubernetes, Temporal and React. We are a data-heavy team and rely extensively on strong typing and shared TypeScript definitions that support development across Smartly. Check out our Engineering at Smartly site to learn how our engineering and product development work. What You Will Do • Design, build, and maintain backend services and frontend applications that power campaign automation and optimization features. • Contribute to technical and architectural decisions that improve scalability, reliability, and developer experience. • Develop and evolve services such as Triggers, Ad Rotation, Smartly Actions, and Action Router. • Collaborate with product managers, designers, and engineers across teams to deliver solutions that address customer needs. • Own projects from planning through implementation, balancing short-term requirements with long-term maintainability. • Improve system quality through automated testing, monitoring, and continuous improvement of engineering practices. • Mentor engineers through code reviews, knowledge sharing, and technical collaboration. • Help shape Smartly’s target architecture by contributing to cross-team initiatives and platform improvements. What We Are Looking For • Strong experience building backend services with TypeScript and Node.js (Python experience is a plus). • Experience developing modern React applications using TypeScript. • Solid understanding of distributed systems, APIs, microservice architectures, and cloud-native development practices. • Experience writing and maintaining automated tests at unit, integration and end-to-end levels. • Ability to independently drive projects from problem definition through delivery. • Strong communication and collaboration skills, with experience working across multiple teams and functions. • A mindset focused on customer value, pragmatic problem solving, and continuous improvement. • Interest in mentoring and supporting the growth of other engineers. • Ability to work in a hybrid capacity from our Helsinki office 3 days a week (more if you like). What We Offer You At Smartly, we offer a place wh