Senior Software Developer - Mobility & Traffic Analytics

Supercell

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

Vay

Ever imagined saying, “I helped launch the future of transportation”? We’re rewriting the rules of urban mobility. At Vay, customers tap a button and a car arrives - with no one inside - powered by our world-first Remote Driving technology on real public streets. We’re live in Las Vegas and scaling fast, powered by a strategic investment of up to $410 million from Grab. Our mission is simple: replace private car ownership with a faster, cleaner, door-to-door mobility model. If you want to build something real, visible, and genuinely transformative, you’ll feel right at home here. Curious to experience Vay yourself? Use the code VAYCANDIDATE for $10 off your first trip in Las Vegas! Download the "Vay" app from the Apple or Google Play store & off you go!  WHAT’S HAPPENING AT VAY * First to roll out vehicles in both Europe and the USA on public roads without a human being inside & currently the 2nd largest commercial, driverless car fleet in the Western World. * We've partnered with Kodiak to bring remote-driving technology to autonomous trucks in the US, showcasing our ability to integrate our system into heavy-duty commercial vehicles and expand the applications of our tech across the US. * We’ve completed 10’s of thousands of trips so far and are busy multiplying our Las Vegas fleet just to meet demand! * ...And soon we’ll be expanding across the US & Europe 🚀 WHY THIS ROLE IS EXCITING As a Senior Software Engineer, Connectivity at Vay, you’ll help build and optimize the networking backbone that makes remote driving possible. Our Connectivity team owns the low-latency real-time video streaming and data transport systems that connect our vehicles with our telestations across cellular and satellite networks. This is a hands-on engineering role where performance, reliability, and safety matter every day, and where your work will directly shape the quality of the remote driving experience. You’ll work on a latency-sensitive distributed system, test your solutions on state-of-the-art hardware, and use real production data to investigate incidents, improve performance, and keep pushing our network stack forward. WHAT YOU'LL BE DRIVING * Develop, optimize, and maintain high-performance network stack used to transport data (video, audio, control, telemetry) between the vehicle and the telestation with a strong emphasis on clarity, maintainability, and efficiency. * Integrate the Vay network stack into various target hardware and software platforms. * Extend and maintain network testbeds and CI infrastructure. * Profile and optimize the performance of the system. * Triage incidents from the production system and create fixes/improvements. WHAT ARE WE LOOKING FOR * Strong proficiency in modern C++ (C++17 or later), with a focus on high-performance, multi-threaded applications. * Experience working in Linux-based environments. * Solid understanding of networking fundamentals and protocols (TCP, UDP). * Ability to analyze and optimize systems. * Strong problem-solving skills and a research-oriented mindset. * Experience working on distributed systems. * Good interpersonal and communication (oral and written) skills Nice to have: * Understanding of networking and wireless technologies, including LTE/5G, WiFi, Starlink, and experience with tools like Wireshark for traffic analysis. * Hands-on experience with streaming protocols, such as RTP/RTCP/RTMP/SRT, and media frameworks, such as GStreamer, FFmpeg, or DirectShow. * Familiarity with congestion control algorithms and network simulation environments. * Experience with building and deployment (e.g. CMake, Docker, Yocto), and scripting languages such as Python or Lua. * Experience in real-time or embedded systems development, with knowledge of modem configuration via AT commands. * Background in performance analysis and debugging, using tools like perf, perfetto; and graphical UIs like ImGui. WHY CHOOSE VAY 💪 A global team of smart, motivated people from 30+ countries who love tackling hard problems and turning bold ideas into reality 🌍 Huge scope for impact in a fast paced environment 💰 ESOP stock options: A stake in Vay’s future - not just a salary 🌴 Unlimited Paid Vacation Days 🎫 Subsidised Deutschland ticket (Berlin) 🏋️‍♂️ Subsidised Urban Sports Club or FitX Membership  🚗 All Vay team members receive 30% off their Vay rides 🛍️ Exclusive external discounts 💼 €350 Home Office Set-up  ✈️ Relocation financial assistance when relocating to Berlin  📚 Fully funded German Lessons  🎊 Regular team events throughout the year   For more information on Vay’s physical demands, working environments and safety requirements, you can review this link. We’ll also cover anything specific to this role during the first interview. We’d love to stay connected for future opportunities, so feel free to include your LinkedIn profile when you apply. We welcome applications from all backgrounds and experiences. If you’re excited about shaping something truly groundbreaking, we’d be happy to hear from you.

Datadog

About Datadog: We're on a mission to build the best platform in the world for engineers to understand and scale their systems, applications, and teams.  We operate at high scale—trillions of data points per day—providing always-on alerting, metrics visualization, logs, and application tracing for tens of thousands of companies. Our engineering culture values pragmatism, honesty, and simplicity to solve hard problems the right way.   You will: * Solve a scaling bottleneck in a critical service * Deploy a new feature to production, progressively rolling it out with feature flags * Investigate and fix a production issue from a service your team owns * Design a way to scale up a service for more traffic * With your team, plan the most important projects to work on next   Who You Are: * You have significant experience in one or more languages * You value code simplicity and performance * You can design architecture to solve problems at high scale * You have a BS/MS/PhD in a scientific field or equivalent experience * You want to work in a fast, high-growth startup environment that respects its engineers and customers * You have demonstrated ability to use AI coding tools in day-to-day workflows and build, validate, and refine AI-generated output in products * You can design AI Backend systems, with awareness of quality, cost, and latency tradeoffs * 6+ years of experience   Bonus points: * You've worked at high scale with systems like Redis, Cassandra, Kafka * You wrote your own data pipelines once or twice before * You have a strong background in statistics * You have significant experience with Go, C, or Python * You’re excited about leveraging AI tools to enhance how you code, solve problems, and build – or eager to learn how * You’re motivated to push the boundaries of how AI can improve software engineering best practices and contribute to building AI-enabled products Datadog values people from all walks of life. We understand not everyone will meet all the above qualifications on day one. That's okay. If you’re passionate about technology and want to grow your skills, we encourage you to apply.  This job is available in various departments within our company; to conform to US export control regulations, some of these roles may require candidates to be eligible for any required authorizations from the US government.   Benefits and Growth:  * Product training to develop an in-depth understanding of our product and space * Continuous career development and pathing opportunities for internal mobility  * Intra-departmental mentor and buddy program for in-house networking  * An inclusive company culture, ability to join our Community Guilds * New hire stock equity (RSUs) and employee stock purchase plan * Free global mental health benefit through Spring Health  * Generous global benefits Benefits and Growth listed above may vary based on the country of your employment and the nature of your employment with Datadog. #LI-MF3   #LI-Hybrid Datadog offers a competitive salary and equity package, and may include variable compensation. Actual compensation is based on factors such as the candidate's skills, qualifications, and experience. In addition, Datadog offers a wide range of best in class, comprehensive and inclusive employee benefits for this role including healthcare, dental, parental planning, and mental health benefits, a 401(k) plan and match, paid time off, fitness reimbursements, and a discounted employee stock purchase plan. The reasonably estimated yearly salary for this role at Datadog is: $192,000—$240,000 USD ---------------------------------------------------------------------------------------------------------------------------------- About Datadog:  Datadog is the leading observability and security platform for the AI era, providing businesses with unified visibility across the technology stack to manage complexity at scale. It brings applications, infrastructure, data, models, and security into one place, using AI to detect and resolve issues before they impact customers. Trusted globally by Fortune 500 companies and high-growth AI leaders, Datadog enables businesses to move faster with clarity and confidence. Learn more about #DatadogLife on Instagram, LinkedIn, and Datadog Learning Center. ---------------------------------------------------------------------------------------------------------------------------------- Equal Opportunity at Datadog: Datadog is proud to offer equal employment opportunity to everyone regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, gender identity, veteran status, and other characteristics protected by law. We also consider qualified applicants regardless of criminal histories, consistent with legal requirements. Here are our Candidate Legal Notices for your reference.  Datadog endeavors to make our Careers Page accessible to all users. If you would like to contact us regarding the accessibility of our website or need assistance completing the application process, please complete this form. This form is for accommodation requests only and cannot be used to inquire about the status of applications.  Privacy and AI Guidelines: Any information you submit to Datadog as part of your application will be processed in accordance with Datadog’s Applicant and Candidate Privacy Notice. For information on our AI policy, please visit Interviewing at Datadog AI Guidelines.