Senior Software Engineer (Identity and Access Management system)

Smartly · Helsinki

Posted 7/14/2026 · last confirmed live 8/26/2026

Are you an enthusiastic Software Engineer who’s ready to embark on new challenges and take your career to new heights? Join our team at Enigma in Helsinki as a Senior Software Engineer , and play a pivotal role in building our secure and scalable Identity and Access Management system. About the Team: As part of the Infrastructure Group at Smartly, Enigma is dedicated to managing Identity and Access Management (IAM) and Billing operations. We tackle complex challenges to ensure secure authentication, flexible authorization, and an efficient Billing Engine for our leading SaaS platform. For references on what problem we’re trying to solve: User Identity and Access Management , including Role-Based Access Control ( RBAC ). Authentication and login methods, including Single Sign-On (SSO) with SAML and OpenID . Authorization mechanisms to control access to various modules of our platform to fit the needs of different customers. We develop and maintain several microservices built mainly using TypeScript, NodeJS, Koa, KnexJS, Postgres, Kafka and run in our Kubernetes clusters. This job position is targeted for a role in the Identity and Access Management domain of the team. Check out our Engineering at Smartly site to learn how our engineering and product development work. As a Senior Software Engineer, You Will: Architect, design, and document new features and system enhancements, ensuring scalability, security, and maintainability for our complex, distributed systems. Apply professional software engineering practices, including the selection, design, and implementation of various architectural and design patterns. Translate architectural designs into maintainable, robust, high-quality code primarily using NodeJS and TypeScript . Develop and maintain APIs for consumption by other backend services or frontend code. Collaborate with diverse stakeholders, including product management, infrastructure, and support functions. What We’re Looking For: Minimum of 5 years of experience in designing, architecting, and building robust, complex, and distributed web applications, where system-level design was a core responsibility. Writing code is not enough; we need proven expertise in system thinking. Demonstrable professionalism in knowing how to design, document, and implement different architectural and design patterns. Strong backend development skills with NodeJS & TypeScript with a good understanding of frontend technologies ( React ). Experience with Rust is considered an advantage Bonus points for knowledge about different IAM-related solutions/technologies (such as Auth0, OAuth, OpenID & SAML, Google Zanzibar ). Excellent written and verbal communication skills in English. Proactive attitude and a passion for taking initiative. Ability to work hybridly, spending at least 3 days a week in our Helsinki office. What We Offer You: Inclusive Culture: Join a team of over 750 Smartlies representing more than 60 nationalities across 24 locations in 13 countries, and 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: Experience a hybrid work 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.io. Meet the Team Lead: Gain deeper insights into your future team. Meet the Team in Technical Interviews: Engage in interactive coding and Systems Design discussions with the team. Meet the Leadership in a Final Meeting: A brief discussion with our Engineering Director. Apply Now and Shape Your Future with Smartly.io! 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.