Senior Software Engineer - Python & AI

Senior Software Engineer, Content AI Warsaw, PL The Senior Software Engineer acts as the technical lead for an agile team, focusing on the design and development of scalable microservices for Peloton's core features across all platforms (Bike, Tread, Strength, and Digital). The Content AI Team is responsible for training and hosting various models in the domains of Natural Language Processing (NLP) and Automatic Speech Recognition (ASR). This role is highly collaborative, requiring close partnership with Product, Design, and QA throughout the development lifecycle. The candidate will be responsible for designing, developing, testing, deploying, and monitoring microservices that specifically power features like search, voice, and captions, which are crucial for platform expansion and international growth. In addition to technical delivery, excellent communication and engineering skills are essential for providing guidance to junior team members and effectively coordinating with other stakeholders, such as Technical Program Managers (TPM). YOUR DAILY IMPACT AT PELOTON * Design, develop and operate business-critical APIs and services with a focus on high availability, low latency, security and scalability * Mentor junior engineers in the team and communicate effectively with TPM and Product * Write understandable, well tested code with an eye towards maintainability and scalability * Architect and build reusable code, libraries, and patterns for use across teams * Propose, experiment, and implement solutions to scale services while meeting business and product requirements.  * Leverage production monitoring/profiling/tracing and load testing tools to discover bottlenecks and using techniques such as data modeling, query optimization, and caching to address the bottlenecks * Lead technical discussions during architecture meetings, design reviews, and task breakdown * Identify common patterns as well as develop and foster development of reusable components and standards across teams * Champion and implement industry best practices such as feature toggles, CI/CD, test automation, logging, and monitoring in order to ensure confidence in our release process * Mentor and coach engineers through code reviews, pair programming, and technical guidance * Participate in on-call rotations and lead incident response efforts to maintain system reliability * Collaborate and partner with cross-functional team members from Product, Design, and QA whilst serving as a domain expert in your area YOU BRING TO PELOTON * MS or BS degree in fields such as Computer Science, Engineering or Mathematics. * 6+ years of software development experience building high-performance, highly scalable backend cloud application systems * Expertise in Kotlin, Python, or similar languages * Strong experience with Spring Boot, Bottle/Gunicorn, or similar backend web frameworks (JVM or Python) * Experience with both relational (e.g. PostgreSQL, MySQL) and NoSQL (e.g. DynamoDB, Mongo) databases * Hands-on experience with Elastic Search query optimization and scaling * Experience with caching systems such as Memcache, Redis * Experience with request processing such as REST, gRPC, or GraphQL * Proven ability to work in high growth, fast-paced environments and adapt to change * Experience with Docker and Kubernetes for containerization and orchestration * Experience with AWS services (DynamoDB, S3, ECR, IAM, Lambda, SQS) and cloud infrastructure design * Experience with deployment tooling such as Terraform, GitHub Actions, Jenkins * Experience with observability and monitoring tools such as Datadog or similar APM solutions * Strong understanding of API design principles, security best practices, and performance optimization * Experience with production support, leading incident response, and troubleshooting complex distributed systems * Experience collaborating with and influencing cross-functional team members from Product, Design, and QA Bonus Points * Experience with building personal voice digital assistants or chatbots * Experience with building search platforms, personalizing search and discovery  * Worked with automatic speech recognition (ASR)    ABOUT PELOTON: Peloton (NASDAQ: PTON) provides Members with expert instruction, and world class content to create impactful and entertaining workout experiences for anyone, anywhere and at any stage in their fitness journey. At home, outdoors, traveling, or at the gym, Peloton brings together innovative hardware, distinctive software, and exclusive content. Founded in 2012 and headquartered in New York City, Peloton has millions of Members across the US, UK, Canada, Germany, Australia, and Austria. For more information, visit www.onepeloton.com. Peloton is an equal opportunity employer and complies with all applicable federal, state, and local fair employment practices laws. Equal employment opportunity has been, and will continue to be, a fundamental principle at Peloton, where all team members, applicants, and other covered persons are considered on the basis of their personal capabilities and qualifications without discrimination because of race, color, religion, sex, age, national origin, disability, pregnancy, genetic information, military or veteran status, sexual orientation, gender identity or expression, marital and civil partnership/union status, alienage or citizenship status, creed, genetic predisposition or carrier status, unemployment status, familial status, domestic violence, sexual violence or stalking victim status, caregiver status, or any other protected characteristic as established by applicable law. This policy of equal employment opportunity applies to all practices and procedures relating to recruitment and hiring, compensation, benefits, termination, and all other terms and conditions of employment.  If you would like to request any accommodations from application through to interview, please email: applicantaccommodations@onepeloton.com. At Peloton, we embrace technology, including AI, to enhance productivity and accelerate innovation in the work we do for our members. However, in our hiring process, our priority remains in getting to know you and your unique qualifications. To ensure a fair and equitable process, we do not permit the use of AI tools during any stage of the application and interview process. In considering you as an applicant, we want to understand your skills, experiences, and motivations without mediation through an AI system. We also want to directly assess your communication skills without the use of an AI tool.  Qualified applicants with arrest or conviction records will be considered for employment in accordance with the Los Angeles County Fair Chance Ordinance for Employers and the California Fair Chance Act, the City of Los Angeles Fair Chance Initiative for Hiring Ordinance and the San Francisco Fair Chance Ordinance, as applicable to applicants applying for positions in these jurisdictions. Please be aware that fictitious job openings, consulting engagements, solicitations, or employment offers may be circulated on the Internet in an attempt to obtain privileged information, or to induce you to pay a fee for services related to recruitment or training. Peloton does NOT charge any application, processing, or training fee at any stage of the recruitment or hiring process. All genuine job openings will be posted here on our careers page and all communications from the Peloton recruiting team and/or hiring managers will be from an @onepeloton.com email address.  If you have any doubts about the authenticity of an email, letter or telephone communication purportedly from, for, or on behalf of Peloton, please email applicantaccommodations@onepeloton.com before taking any further action in relation to the correspondence. Peloton does not accept unsolicited agency resumes. Agencies should not forward resumes to our jobs alias, Peloton employees or any other organization location. Peloton is not responsible for any agency fees related to unsolicited resumes.

e.construct We are an engineering firm that specializes in providing elegant engineering solutions for complex challenges. e.construct is a fast-growing firm with 7 offices around the world. At our core, we question how the very nature of how to evolve the structures that we inhabit to increase their performance and value. we design structures such as bridges, high-rise design, precast concrete engineering and post-tensioning design. The firm's core work is structural engineering; however, e.construct is increasingly holistic at its approach to buildings and it has divisions in MEP, Geotechnical and emerging construction technology such as 3D printing of concrete, technology and 3D laser scanning. VAES.ai We are a tech startup that is being incubated in the technology lab of e.construct and we employ technology to empower and eventually transform engineering. VAES’s mission is to reduce the amount of raw materials we design in our buildings and bridges by using optimization algorithms and machine learning. VAES consists of a team of software developers, civil engineers, machine learning experts, architects and graphic designers that builds tools that engineers can use to design and manufacture the next generation of cities. At VAES.ai, we’re building more than just a company—we’re shaping the future of technology, research, and sustainable solutions. We’re looking for a passionate Senior Software Engineer to join our growing team. What’s it like to work with us? ✨ Top Talent, Multidisciplinary Teams: Collaborate with designers, researchers, software engineers, and structural experts across borders. 🔧 We Build What We Need: From our performance evaluation system to internal tools—we don’t rely on external software. We design what works for us. 🌱 Sustainability Is in Our DNA: This isn’t a slogan. VAES was founded with the environment in mind—from how we build to why we exist. 🛡️ Stability with Heart: We prioritize long-term growth and people-first decisions. We support our team through every phase of their journey—including when they explore new paths beyond our walls. 📣 Open Channels, Real Leaders: Leadership is accessible and involved. We don’t do the fake open-door thing. We know our strengths—and we know our gaps. If you’re someone who wants to make a visible, measurable impact, you’ll find a place here. As a Senior Software Engineer, you will collaborate with Computational Structural Engineers to develop automation tools for Engineering Design. Amongst other libraries, you will be using Python libraries for QT (PySide6), VTK (pyvtk and pyvista), Numpy, Shapely, matplotlib, and scikit-spatial . Your software will integrate with existing industry standard Structural Engineering Software such as ETABS, Autodesk Revit and Opensees. Having solid geometrical and mathematical backgrounds will be extremely helpful in this role.