Are you an ambitious backend-oriented Fullstack Engineer ready to take on new challenges and grow exceptionally in your career? Join our team Render as a Senior Software Engineer and be at the forefront of transforming our Creative production tooling! About the Team: Smartly proudly houses Render, responsible for a flagship part of Smartly's product offering, having an extensive impact on the company's ambitions for the future. Our customers rely on our creative production engine to generate tens of millions of advertising creatives, and your future team is at the core of this massive operational effort. We are agnostic about technology and always aim to choose the best tools for the job. Our services run on Node.js, orchestrated by Kubernetes, and we manage public APIs that serve as the backbone for internal services across the company. To analyze the performance of our creatives across social platforms, we integrate with robust BI tools including Snowflake, Redash, and Google. We ensure reliability and speed through automated pipelines using GitHub Actions. Our work is defined by immense scale and innovation. During peak times, our systems have rendered 16 billion (16 000 000 000) images monthly on hundreds of servers. We focus heavily on evolving our creative group’s capabilities while reacting to real-time customer demand and feedback. Check out our Engineering at Smartly site to learn how our engineering and product development work. As a Senior Software Engineer, You Will: Own vertical slices of our rendering platform, taking end-to-end responsibility for backend projects and distributed systems. Find the smallest possible increments to deliver infrastructure improvements and features to customers as quickly as possible. Define, design, and own API contracts for both internal and external stakeholders.. Documenting our services and communicating our offerings to other teams within Smartly Lead technical design decisions and tradeoffs, prioritizing high availability, performance, and code quality in every release. Partner closely with Product and Infrastructure stakeholders to ensure our rendering engine meets customer demand at a global scale. Act as a mentor and technical guide, elevating the team through constructive code reviews and providing guidance on complex backend architecture. Drive projects forward independently, proactively identifying performance bottlenecks and dispatching roadblocks efficiently.. What We’re Looking For: Minimum of 6 years of experience in building robust, complex, and distributed web applications Deep expertise in backend development using modern technologies. We use mostly Node.js, Typescript and PostgreSQL but we are open to hearing more about technologies used by you DevOps experience including competency with Kubernetes and messaging queues is considered as an asset A proactive and autonomous mindset, showing persistence when solving deep technical hurdles in production environments. Strong analytical skills to dissect product requirements into actionable technical tasks and well-architected services. Excellent communication skills in English, with the ability to explain the connection between infrastructure work and the company vision. 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 (or more if you like). What We Offer You: Inclusive Culture: Join a team of over 850 Smartlies representing more than 60 nationalities across 24 locations in 13 countries, we foster a culture built on trust, transparency, and open feedback. Global Impact: Be part of a company making a global impact, directly influencing our customers and business growth. Wellbeing Focus: Enjoy generous healthcare packages, mental health services, and a healthy work-life balance with paid holidays and family leave. Total Rewards: Benefit from equity options, performance-based rewards, competitive compensation, and ample career development opportunities. Hybrid Workplace: We work in a hybrid model, balancing office and remote work, with the option to work abroad for up to 30 days. Smartly is committed to being the best place to work for growth-minded individuals to thrive - explore more in our Culture Handbook! What to Expect from Our Recruitment Experience: Meet your Recruiter: Get to know each other and learn about working at Smartly. Meet the Team Lead: Gain deeper insights into your future team. Meet the Team in Technical Interviews: Engage in an interactive coding interview followed by a discussion around Systems Design and Architecture. Meet the Leadership in a Final Meeting: A brief discussion with our VP of Engineering. Apply Now and Shape Your Future with Smartly! #LI-JF2 #LI-Hybrid