Top Engineering Jobs

Senior Fullstack Engineer responsible for designing and operating backend-heavy, data-intensive services and APIs. The role focuses on data ingestion, distributed processing, data modeling, scalability, reliability, concurrency, observability, and performance optimization. The engineer will own complex technical problems from design through deployment, influence architecture, collaborate with product and engineering stakeholders, and improve software engineering practices. The position requires working from the Mexico City office one day per week.

Build and maintain full-stack services and applications for advertising campaign automation and optimization. Design scalable distributed systems, contribute to architecture, develop automated tests, collaborate across teams, own projects from planning through delivery, improve engineering practices, and mentor other engineers. The role focuses on TypeScript and Node.js backend development, React frontend applications, cloud-native systems, and Smartly’s campaign automation platform.

Own and build a greenfield platform integration: design, implement, and monitor data-intensive microservices; collaborate with product and design; lead team rituals; and mentor engineers to deliver scalable solutions.

Lead and enable a full-stack engineering team to deliver high-quality, large-scale web products. Coach team members, remove blockers, participate hands-on in code and architecture, and drive technical and product excellence.

Design, build, and maintain backend services for AI-powered campaign optimization products. Support data scientists in deploying machine learning models, improve software architecture and engineering practices, contribute to planning and team development, mentor engineers, and collaborate with product, infrastructure, stakeholders, and customers to deliver reliable solutions.

Design and implement scalable advertising platform integrations, distributed systems, microservices, automation, APIs, and data-intensive services. Drive architectural decisions, collaborate across product and engineering teams, unify channel behavior, and mentor engineers. The role focuses on production-grade Node.js and TypeScript systems, React frontend development, asynchronous architectures, and high-volume campaign data processing in a hybrid Helsinki setup.

Six-month software engineering launchpad for recent Computer Science or related graduates. Participants contribute to Smartly’s advertising platform, work on product development with experienced mentors, strengthen web engineering skills, and support customers through technical problem-solving. The program requires 37.5 hours per week, English proficiency, and attendance at the Helsinki office at least three days weekly. It begins in January 2027 and may lead to a permanent engineering role.

Design and build large-scale backend systems powering advertising performance reporting. Responsibilities include developing analytical reporting engines, distributed and asynchronous processing, database and query optimization, advertising-platform integrations, architecture improvements, technical ownership, and mentoring engineers.

Own backend projects and distributed systems for a high-scale creative rendering platform. Design and maintain internal and external APIs, improve infrastructure, lead technical decisions, optimize availability and performance, document services, collaborate with Product and Infrastructure teams, and mentor engineers. The role involves building Node.js and TypeScript services deployed with Kubernetes and supporting rendering workloads generating billions of images monthly.

Build and operate TikTok advertising capabilities across Smartly’s full stack, including customer-facing experiences, backend services, APIs, distributed systems, and integrations. Shape architecture and product decisions, collaborate with engineering, product, and design teams, and mentor other engineers. The role requires owning complex capabilities from concept through production while balancing scalability, reliability, user experience, customer needs, and delivery speed in a hybrid Helsinki setup.