Senior ML Platform Engineer

About the role

Senior ML Platform Engineer | Bolt Careers Careers Engineering Senior ML Platform Engineer Senior ML Platform Engineer We are looking for a Senior ML Platform Engineer to join our ML Platform team to build, evolve and scale AI Infrastructure that powers Bolt's intelligent services Locations: Warsaw, Poland | Tallinn, Estonia | Bucharest, Romania View all roles Apply now About the role The ML Platform Team makes ML/AI easy at scale. We streamline development, testing and deployment of ML/AI systems for hundreds of real-time algorithms. We own training orchestration, an inference software stack and infrastructure, and a Feature Store, including VectorSearch and RAG tooling. We develop LLM tools and CI/CD for ML, covering the whole range of ML infrastructure needs. Our tech stack includes TypeScript, Python, Spark (batch and structured streaming), Airflow, n8n, MLflow, LiteLLM, AWS SageMaker, Redis, Elasticsearch, Docker, Kubernetes, AWS (S3, EKS), Terraform, Great Expectations. Main tasks and responsibilities: Designing, building, and optimising components of Bolt’s ML Platform. Optimise and extend our in-house Feature Store Platform serving billions of data points in real-time. Tune infrastructure (k8s and AWS) and build automations to achieve the best cost-performance. Proactively solve technical challenges, discover and build new features, enabling develop efficiency. Support our internal users and help with troubleshooting, and turn user problems into scalable solutions. Raise our product and technical quality bar, promoting software engineering best practices. About you: 5+ years of experience in Software Engineering, out of which 2+ in ML/MLOPS/AI Engineering. Experience in leading and delivering complex cross-team projects. Production experience with Python, Spark, and Kubernetes. Experience in MLOPS and AI ecosystem, and developing end-to-end ML/AI solutions at scale. You strive for technical excellence while staying pragmatic to achieve outcomes for the users. Experience is great, but what we really look for is drive, intelligence, and integrity. So even if you don’t tick every box, please consider applying! Apply now and join us to make cities for people, not cars. First name Last name Email Phone Number + 372 Location We can only offer relocation and visa support to Tallinn Upload your CV Drop files here to upload or choose from your device Browse files Supported formats: .pdf, .docx (max. file size 5MB) Do you have a legal right to work in Poland? Yes No Please describe any technologies, tools, or projects you’ve worked on that are relevant to this role. Include links if available. What is your current location? Will you now or in the future need sponsorship for employment visa status to start or keep working with Bolt? Select an option Where did you hear about Bolt? Select an option Do you need special assistance due to disability? We are happy to provide reasonable accommodations. (optional) By responding, you consent to Bolt processing your disability data in accordance with our Privacy Notice . By ticking this box, I confirm that I have read and understand the content of the Privacy Notice and acknowledge that my personal data will be processed as part of this application. Continue to survey Submit application Fill in our Demographic Survey Please help Bolt’s diversity and inclusion efforts by completing our voluntary demographic survey. Which gender identity do you most closely identify with? (optional) Female Male Non-binary Other Prefer not to disclose What is your age? (optional) Under 21 21-25 26-34 35-44 45-54 55-64 65 or over Prefer not to disclose Are you a parent, caretaker, or legal guardian of anyone? (optional) Yes No Prefer not to disclose Do you live with any disability? (optional) Yes No Prefer not to disclose In which country do you currently live? (optional) Estonia Romania Poland Germany Other, please specify (country) Prefer not to disclose Question 1 / 5 Previous Next Submit application Your answers are anonymous and not linked to your application. By responding, you consent to Bolt processing your demographic data in accordance with our Privacy Notice . AI Disclaimer: We use Greenhouse's AI-powered Talent Matching tool to compare your application against our job requirements. Learn More Become part of our Engineering team *Some perks may differ depending on your location. Why you’ll love it here: Our engineers are at the forefront of innovation within some of the largest industries in the world. Are you up for the challenge? View team Accelerate your professional growth with unique career opportunities. Enjoy a rewarding salary and stock options, knowing that as Bolt succeeds, so do you. Take care of your physical and mental health with our wellness perks. Celebrate 5 years at Bolt with a 1-month paid sabbatical to recharge. Connect with colleagues at annual company events and smaller team gatherings. Balance flexibility and in-person collaboration with our hybrid model, including at least 12 monthly in-office days. About us With over 200 million customers in 50+ countries, Bolt is one of the fastest-growing tech companies in Europe and Africa. And it's all thanks to our people. Learn more We believe in creating an inclusive environment where everyone is welcome, regardless of race, colour, religion, gender identity, sexual orientation, age, or disability. Our ultimate goal is to make cities for people, not cars, and we need your help to achieve this mission! 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