Senior Fullstack Engineer (Creative & Media Library)

Smartly · Helsinki

Posted 8/14/2026 · last confirmed live 8/26/2026

Smartly proudly houses Rocket, the team responsible for building out the Media Library. Our customers rely on our creative production tooling to generate and manage tens of millions of advertising creatives, and your future team will be placed in the center of all of this effort. We are agnostic about technology and always aim to choose the best tools for the job. On the front-end, React, TypeScript and our own shared UI library. On the backend side of things, our favored stack is Node.js in combination with TypeScript usually coupled with PostgreSQL and/or Kafka. Our service runs on Node.js orchestrated by Kubernetes. We also integrate with some BI tools (Snowflake, Redash, Grafana) to analyze the performance and usage of our services. We use pnpm, webpack and GitHub Actions for our build and deployment pipeline. We will focus heavily on bringing innovations to the Creative Group while reacting to customer demand and feedback. Check out our Engineering at Smartly site to learn how our engineering and product development work. What You Will Do Have end-to-end ownership of vertical slices of our platform. Documenting our services and communicating our offerings to other teams within Smartly. Defining, designing, and owning API contracts made for internal and external stakeholders. Focus on well-designed and well-executed software, quality matters. Be a core contributor to our Creative Engineering Group's ambitions and product offering. Work with our stakeholders - be them UX, product, infrastructure, or our support function - to ensure we meet customers where they are. Apply and enhance your soft skills by working closely with our customers and your peers. What We Are Looking For Minimum of 7 years of experience in building robust, complex, and distributed web applications. Experience in building and maintaining complex client applications using React. Experience in backend development using modern technologies. We use NodeJS and Typescript, but we are open to hearing more about technologies used by you. Ambition and eagerness to excel and commitment to continuous growth. Excellent spoken and written communication skills in English. Ability to effectively work with different stakeholders, ensuring smooth collaboration and project success. Motivation for solving customers' problems and delivering value to customers at a fast pace 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 where you can advance your career. Here, you'll find: An Inclusive Global Culture: Join a team of over 900 Smartlies, representing more than 60 nationalities across 24 locations in 13 countries. We cultivate a culture built on trust, transparency, and open feedback, where diverse perspectives are valued and encouraged. Global Impact: Contribute to a company making a global impact, directly influencing our customers' success and business growth. Focus on Wellbeing: We prioritize your health with healthcare packages, mental health services, and a commitment to work-life balance through paid holidays and family leave. Comprehensive Rewards: Benefit from equity options, performance-based rewards, competitive compensation, and career development opportunities. Flexible Hybrid Workplace: Experience a hybrid work model, balancing office collaboration with remote work, and the option to work abroad for up to 30 days annually. Apply Now and Build Your Future with Smartly! Curious what it’s like to work at Smartly? Visit our Careers page to see how we grow, collaborate, and make impact together #LI-HYBRID About Smartly Smartly is the AI-powered advertising technology company transforming ad experiences for brands and their consumers. Our comprehensive advertising platform seamlessly integrates the capabilities of media, creative, and intelligence to power more than 800 billion impressions and generate more than 300 billion creatives annually, delivering tangible business outcomes for brands and advertisers. Smartly is the only company in the industry recognized as a Leader in The Forrester Wave: Creative Advertising Technologies with PwC validating the results it delivers for brands. We manage creative and media for 700+ brands worldwide and $6B in ad spend across the largest media platforms, including Facebook, Google, Instagram, Pinterest, Snap, and TikTok. Our end-to-end technology, unmatched access to media platforms and exceptional customer service help Fortune 500 brands to reach and engage consumers and learn what performs best.Smartly is a multinational and diverse team of 750+ Smartlies from 60+ nationalities, working in 13 countries. Together, we want to create and maintain an inclusive environment where everyone feels respected and heard. Our Diversity, Equity & Inclusion approach is at the heart of it. Visit Smartly to learn more. The processing of your information is described in our Candidate Privacy Notice .

This role is published by Smartly on greenhouse. SwiftFit is not the employer and does not accept applications.