
Supercell · Helsingfors
WE ARE LOOKING FOR A SENIOR SOFTWARE ENGINEER TO JOIN THE SUPERCELL ID TEAM WITHIN OUR PLAYER PLATFORM ORGANIZATION. IN THIS ROLE, YOU WILL OWN AND DRIVE SIGNIF...
WE ARE LOOKING FOR A SENIOR SOFTWARE ENGINEER TO JOIN THE SUPERCELL ID TEAM WITHIN OUR PLAYER PLATFORM ORGANIZATION. IN THIS ROLE,
YOU WILL OWN AND DRIVE SIGNIFICANT EVOLUTIONS OF SUPERCELL ID: SETTING TECHNICAL DIRECTION, LEADING HIGH-IMPACT INITIATIVES
END-TO-END, AND RAISING THE BAR FOR PLAYER SAFETY, RELIABILITY, AND TRUST ACROSS OUR ECOSYSTEM.
As a Senior Software Engineer you will play a key role in designing and building new features, maintaining and operating existing
systems, and collaborating with game teams, Player Care, Trust & Safety, Legal, and others across Supercell. We're a small team
with outsized impact – and outsized expectations. We expect Senior Software Engineers to take active part in planning and leading
feature projects beyond just technical execution. This means being present in every part of the project lifecycle, from planning
and scoping to shipping and operating.
Supercell ID connects hundreds of millions of players to Supercell's ecosystem. The team builds critical infrastructure and UX
that links all our games and web services together into a cohesive player experience. We care about account safety, registration
and login, compliance, identity, and Supercell-wide architecture for consolidating and packaging common account use cases.
up when things broke
to travel regularly to Helsinki, as that is where the majority of this team is based.
–––
That's it about the role! Below, we've gathered some things we feel are important for you to know. Totally optional, but a highly
recommended read.
Once you're ready to apply, just send us your application through the form on the bottom of the page.
–––
Supercell is a games company from Helsinki, Finland, with offices also in San Francisco, Seoul, Shanghai, and London. You might
know us as the makers of Hay Day, Clash of Clans, Boom Beach, Clash Royale, and Brawl Stars. Our mission is to create great games
that as many people as possible play for years and that are remembered forever.
So, how do we make great games? By putting together the best teams and giving them the freedom and independence to succeed. And by
taking risks, failing, sharing learnings, and killing lots of projects.
Independent cells and trust are at the core of our culture. But it takes more than that to make great games. We take good care of
our people, providing them with the compensation, work environment, and resources they need to succeed while having fun along the
way.
Here, you won’t need to focus on chasing titles or climbing ladders. Internally, our job titles don’t include prefixes like
Senior, Junior, Principal, or Director. Recognition isn’t tied to your title, as it doesn't define the impact you can have around
here.
Luring you in with glitter, glamour, and gems isn't what we're about. We want you to enjoy your time here fully, so we structure
our compensation and benefits with that in mind. It starts with perceiving you as a human being, not a resource.
No matter where you’re moving from, our dedicated mobility team and partners will support you throughout your move. We’ll ensure
the process is as smooth as possible for you and anyone joining you – whether they’re family members of the human or animal kind!
Many candidates with great skills and experience second-guess themselves. The bar is high, but if this role excites you, apply!
We’re here to help you succeed. Also, we're happy to learn about any specific accommodations you may need to fully engage in our
recruitment process.
Wishing you all the best,
The Supercell Recruitment team
WE’RE LOOKING FOR A SENIOR MACHINE LEARNING ENGINEER WHO CAN BUILD LARGE-SCALE SYSTEMS AND TURN THEM INTO IMPACTFUL SOLUTIONS FOR PLAYERS AND THE BUSINESS. IF DESIGNING REAL-TIME, PLAYER-FACING USE CASES WITH MEASURABLE IMPACT AT MASSIVE SCALE SOUNDS EXCITING, THIS COULD BE A GREAT FIT. Supercell is rapidly scaling its machine learning capabilities. We are building a scalable ML platform and bringing personalized player experiences into production at massive scale. Our ambition is to empower game teams to deliver billions of automated, data-driven decisions across the full player journey every day. You’ll join a small, high-impact team of Data Science and Machine Learning experts, working closely with game teams, LiveOps, Data, and Analytics. You’ll play a key role in shaping Supercell’s ML platform, delivering impactful solutions, and enabling teams to build and scale ML-driven features. Your work will span the full ML lifecycle from business problem formulation and data collection to modeling and deployment real-time decisioning, helping turn ideas into production systems that directly impact players. You’ll set strong engineering practices, share your knowledge, and help shape how we use ML to optimize player experiences. WHAT YOU'LL BE DOING * Understand our games, players, and business goals to identify where ML can deliver meaningful impact, and build strong relationships across teams. * Design and build end-to-end, real-time and event-driven ML systems from data to low-latency serving, enabling context-aware player experiences. * Develop and deploy ML models and decision systems that shape personalized player experiences across the full player journey. * Build scalable ML systems and reusable platform capabilities, enabling game teams to adopt ML through tools, pipelines, and APIs. * Balance speed, robustness, experimentation, and standardization while continuously reducing time from idea to experiment to production. * Operate, monitor, and optimize production ML systems to ensure world-class performance, reliability, and scalability. * Champion modern MLOps practices through mentorship, code and design reviews, documentation, and by guiding game teams in adopting ML workflows. * Shape ML strategy and ensure it drives real player and business impact. * Continue to level up Supercell AI maturity throught knowledge sharing and adoption of new tools. WHAT YOU HAVE * Deep expertise in Machine Learning with a strong track record of taking ML systems into production. * Hands-on experience deploying ML models at large scale, operating in high-traffic, low-latency production environments. * Strong software, data, and ML engineering skills, with the ability to design, build, and maintain robust end-to-end ML pipelines. * Experience leveraging modern AI-assisted development tools to improve productivity and accelerate iteration speed. * Proven ability to collaborate with other developers and AI agents, as well as independently drive ML projects from idea to production. * Excellent problem-solving ability, with strong analytical thinking and attention to detail. * Clear and effective communication skills, able to translate complex technical concepts for both technical and non-technical audiences. * Positive, proactive, and “can-do” mindset, with a willingness to dive deep and take ownership. * Passion for games. Previous industry experience is a strong plus. WHAT YOU'LL BE USING The following list is not intended as a strict set of requirements, but rather as examples of relevant technologies and areas of experience * Data & Processing: Python, Databricks, SQL, Spark, Redis, Tecton * Cloud: AWS, GCP * ML Frameworks: PyTorch, Ray, TensorFlow, ONNX * ML Training: Databricks Spark and Ray train + data * ML Serving: Ray serve, FastAPI, Triton inference * Infrastructure & Deployment: Docker, Kubernetes, Terraform, Kubeflow, GitHub Actions * Monitoring and tracking: Grafana, Prometheus, Weights and Biases, MLflow * AI development tools: Claude Code, Codex WHERE YOU'LL BE This role is based in our Helsinki office. We value a collaborative work environment and genuine human interactions. You will work very closely with our other Helsinki-based teams. If you are not local, our relocation team would be excited to help you with your move to Helsinki. We provide comprehensive support not only for you, but also for your family! ––– That's it about the role! Below, we've gathered some things we feel are important for you to know. Totally optional, but a highly recommended read. Once you're ready to apply, just send us your application through the form on the bottom of the page. ––– ABOUT SUPERCELL Supercell is a games company from Helsinki, Finland, with offices also in San Francisco, Seoul, Shanghai, and London. You might know us as the makers of Hay Day, Clash of Clans, Boom Beach, Clash Royale, and Brawl Stars. Our mission is to create great games that as many people as possible play for years and that are remembered forever. So, how do we make great games? By putting together the best teams and giving them the freedom and independence to succeed. And by taking risks, failing, sharing learnings, and killing lots of projects. HEY, YOU MIGHT LOVE IT HERE! Independent cells and trust are at the core of our culture. But it takes more than that to make great games. We take good care of our people, providing them with the compensation, work environment, and resources they need to succeed while having fun along the way. YOU ARE NOT YOUR JOB TITLE ™ Here, you won’t need to focus on chasing titles or climbing ladders. Internally, our job titles don’t include prefixes like Senior, Junior, Principal, or Director. Recognition isn’t tied to your title, as it doesn't define the impact you can have around here. BENEFITS AND COMPENSATION Luring you in with glitter, glamour, and gems isn't what we're about. We want you to enjoy your time here fully, so we structure our compensation and benefits with that in mind. It starts with perceiving you as a human being, not a resource. RELOCATION? YES! No matter where you’re moving from, our dedicated mobility team and partners will support you throughout your move. We’ll ensure the process is as smooth as possible for you and anyone joining you – whether they’re family members of the human or animal kind! NOT SURE IF YOU SHOULD APPLY? Many candidates with great skills and experience second-guess themselves. The bar is high, but if this role excites you, apply! We’re here to help you succeed. Also, we're happy to learn about any specific accommodations you may need to fully engage in our recruitment process. Wishing you all the best, The Supercell Recruitment team
We are looking for a Senior Software Engineer to join the AI Platform Team at Smartly! Our team works on helping marketers make the most of their ad creatives (images, video, text) and campaigns (product and performance data). We build and experiment with AI-based solutions across the media and creative workflows.You will have the opportunity to take ownership of and work on high impact projects. Join us in building high impact ML-based solutions to help our customers to build better and more effective advertising experiences for their consumers. If you’re a growth minded individual who has a passion for ML and the marketing space, this team is for you! We use Python, TypeScript, PostgreSQL, Node.js, Docker and Kubernetes for our microservices, TypeScript and React in the frontend of our products. HERE'S WHAT YOU'LL DO... * Design, build and maintain backend services that sit at the core of Smartly.io’s campaign optimization products. * Be a core contributor of our team and our ways of working to build high impact products. You’ll actively be involved in work planning, retrospectives, and overall team improvement. * Support data scientists in bringing machine learning models to production. * Mentor your team on software development practices and propagate best practices like testing, monitoring, or clean code. * Use your skills and experience to continuously improve our software architecture, coding practices, tools, and processes. * Work with our stakeholders - be them product, engineering, infrastructure - to ensure we meet customers where they are. Being able to translate business/product needs to viable solutions is a must. * Apply and enhance your soft skills through working closely with your colleagues and our customers. Doing knowledge shares, running productive meetings, and pair programming/debugging are just some ways we grow our soft skills. * Impact the daily life of the staff of the hundreds of advertisers using Smartly HERE'S WHAT WE'RE LOOKING FOR... * We’re seeking an experienced Software Engineer with Strong Python skills * 5+ years of experience developing and deploying production-quality software * 2+ years of experience working with cloud infrastructure such as AWS or GCP * Experience with NodeJS, React, TypeScript is a plus * Hands-on experience with modern ML frameworks (e.g., PyTorch, TensorFlow) is a plus * Knowledge of MLOps concepts and tools (e.g., MLflow, Kubeflow) is a plus * Experience developing and maintaining services under SLA * Analytical mindset with a problem-solving approach * Passion for solving customer challenges quickly while making thoughtful architectural decisions * Adaptability and resilience when facing new or ambiguous challenges * Strong written and verbal communication skills in English * Ability to work 3 days / week at our office * M.Sc. in a relevant field is preferred WHAT WE OFFER YOU... * Inclusive Culture: Join a team of over 750 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: Experience the flexibility of 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! #LI-hybrid #LI-JF2 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.
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.