Tech Lead - Data Engineering

Waymo is a pioneering autonomous driving technology company dedicated to becoming the world’s most reliable driver. Originating from the Google Self-Driving Car Project in 2009, Waymo is committed to enhancing mobility access and saving lives lost in traffic accidents. The Waymo Driver—the world's most experienced driver—powers our fully autonomous ride-hailing service and can be adapted to various vehicle platforms and applications. To date, the Waymo Driver has successfully completed over ten million rider-only trips, thanks to its extensive experience of autonomously navigating more than 100 million miles on public roads and billions of miles in simulations across over 15 U.S. states.The RO Performance team plays a crucial role in understanding and enhancing Waymo's self-driving technology. We are responsible for building and maintaining the essential infrastructure needed to process and analyze vast datasets from real-world driving logs and simulations. Our systems generate key performance metrics and power dashboards critical for tracking product performance, pinpointing improvement areas, and facilitating data-driven decision-making. The insights we provide directly impact Waymo's operational deployments, weekly performance evaluations, and ultimately enhance the safety and reliability of our autonomous vehicles.In this hybrid role, you will report to a Staff Software Engineer.

Waymo is at the forefront of autonomous driving technology, dedicated to becoming the most reliable and trusted driver worldwide. Originating from the Google Self-Driving Car Project in 2009, our focus has been on developing the Waymo Driver—The World’s Most Experienced Driver™—to enhance mobility access and save countless lives lost to traffic accidents. The Waymo Driver is the backbone of our fully autonomous ride-hailing service, and it has been tested rigorously with over 100 million miles of autonomous driving on public roads and billions of miles in simulation across more than 15 U.S. states.Are you passionate about shaping the future of transportation through innovative infrastructure for driverless cars? Join our Commercialization team and contribute to the evolution of our core ride-hailing and fleet management systems. We are seeking an enthusiastic Staff Software Engineer who is eager to tackle Level 4 autonomous driving challenges, collaborate across teams (including mobile applications, cloud backends, and the Waymo Driver), and engage with various functions such as operations, product, legal, partnerships, policy, and privacy to create and enhance essential business infrastructure. We look forward to meeting you!In this hybrid role, you will report directly to an Engineering Director.

Join SKELAR, a pioneering venture builder committed to establishing international tech businesses. We partner with co-founders to assemble strong teams that excel in global markets.Currently, SKELAR manages a diverse portfolio of businesses across various sectors, from EdTech to marketplaces. Our ventures have been recognized as top startups and product companies in Ukraine, featuring prominently in AppStore rankings and creating platforms used by millions. Notable media outlets like TechCrunch and Wired have covered our businesses.We take pride in our robust team of over 1,000 specialists, each possessing exceptional expertise and ambitious goals. Our people are our greatest asset, and we strive to build businesses alongside the best talent available.We are currently seeking a Golang Backend Team Lead for PawChamp, a mobile application and online platform designed for dog owners. PawChamp enables pet parents to train their dogs and learn more about care and training through 24/7 chats with experts, the AI companion Pawchie, and educational materials developed in collaboration with dog trainers. Our aim is to provide personalized daily lessons covering all aspects of dog training, from basic commands to addressing behavioral issues. Our strategic goal is to become the leading player in the global online dog training market, fulfilling all needs of pet parents and their dogs beyond training.In October 2025, we earned the title of Product of the Day on Product Hunt.App Store rating: 4.8Intro video about the product: https://www.youtube.com/watch?v=D3vURwhmufgKey Challenges:Enhancing the backend for our mobile products and the PawChamp web platform.Leading, coordinating, and developing the backend development team.Collaborating with stakeholders.Ensuring high code quality and adherence to best development practices within the team.Interacting with adjacent teams to improve system component interaction and optimize processes.Enhancing code, architecture, services, and development approaches.What We Value:

Join HelloFresh in Warsaw as part of our HelloTech organization, a vital segment of our global technology team comprising over 1000 professionals. We are dedicated to developing digital products that enhance the end-to-end food experience, encompassing meal kits, ready-to-eat meals, and even specialty items like pet food and premium meat & seafood. Our technology platforms empower millions of customers with personalized food solutions every month.Our direct-to-consumer subscription model is fueled by cutting-edge technology that optimizes every customer interaction—from engaging applications and personalization algorithms to pricing strategies and supply chain management. Although our brands operate independently to cater to diverse customer needs, they are unified by shared platforms, data, and operational excellence crafted by HelloTech.At HelloTech, we work in autonomous, cross-functional teams that take ownership of specific products and domains. By collaborating with our Warsaw office, you will contribute to scalable, data-driven products used across various markets, leveraging a modern tech stack and working with international teams to continuously enhance how our customers discover, order, and enjoy HelloFresh products now and in the future.

About the RoleJoin Logz.io as a Backend Software Engineer and be part of a dynamic team that is reshaping the observability landscape. In this role, you will design and develop robust backend systems that scale effectively, ensuring seamless integration and exceptional performance.Key ResponsibilitiesDevelop and maintain scalable backend services and APIs.Collaborate with cross-functional teams to define, design, and ship new features.Troubleshoot and optimize existing systems for performance and scalability.Participate in code reviews and contribute to team knowledge sharing.

Join Our Team as a Junior Backend Engineer!We are seeking a passionate Junior Backend Engineer to be part of our innovative team in Warsaw. At Bolt, our engineering teams tackle unique challenges, including sophisticated algorithms for demand forecasting, real-time pricing optimization, route planning, fraud prevention, distributed systems, and much more.About BoltWith more than 200 million customers across over 50 countries, Bolt stands as one of the fastest-growing tech enterprises in Europe and Africa. Our success is driven by our dedicated team members.We are committed to fostering an inclusive atmosphere where everyone feels valued, irrespective of race, color, religion, gender identity, sexual orientation, nationality, age, or disability. Our ultimate vision is to transform cities for people, not cars, and we invite you to help us realize this mission!Role OverviewAs a Junior Backend Engineer, you will play a crucial role in architecting, designing, developing, and deploying our expanding backend systems. Your primary programming will involve Node.js and TypeScript (prior experience with Node.js is not required).You will work closely with key internal stakeholders to design scalable backend systems and APIs that effectively meet their requirements.

TENTENS Tech is a partner IT company of SKELAR — a Ukrainian venture builder dedicated to constructing international tech businesses.We create social discovery platforms serving over 20 million users globally. Our momentum and scale are driven by deep expertise in analytics, high-load systems, and performance marketing.Today, the TENTENS Tech team comprises over 250 individuals, each acting as a CEO in their role, impacting collective outcomes. We operate in a 10/10ths style: staying focused on our goals, asking the right questions along the way, and never settling for 'good' — only maximum performance and a bit more. If you identify with this description and are ready to accelerate with us — let’s connect!We are currently seeking a Growth Operations Lead to elevate our performance standards together.Key responsibilities in this role include:Ownership of the Online Reputation Management business directionManagement of a team of 10+ top specialistsOperational excellence: building and optimizing processes in an operations-heavy environmentEstablishing a framework for hypothesis testing and scaling successful outcomesYour influence will extend to:Process architecture, functions, and organizational structureBusiness outcomes of the unitTarget metrics, planning, and decision-makingWhat we value:Experience in building processes and teams in an operations-heavy environmentExperience managing a business unitData-driven mindsetLeadership skills and people management: driving the team while formulating ambitious plans and providing space for them to choose their tools for executionPreferred qualifications:Experience in SERM/ORM/SEO domainsWhat you will gain with us:Access to internal clubs in professional domains: reputation, marketing, development, finance, recruitment...

Location: Warsaw, Poland — Hybrid (4 days on-site / 1 day remote)Contract: B2B · 25–40 k PLN net / month + RSUsFresha: Innovating the Beauty & Wellness SectorBecome a part of Fresha, the premier marketplace platform revolutionizing the beauty and wellness industry on a global scale. With a network of over 120,000 businesses and 450,000 stylists who trust our platform, we've facilitated more than 1 billion appointments worldwide. Fresha provides an integrated platform for bookings, point-of-sale, marketing, and more, connecting consumers with local services.Your Role as a Backend EngineerAt Fresha, we harness the power of AI not merely as a coding assistant, but as a catalyst for feature delivery. We equip every engineer with cutting-edge tools (Claude, GitHub Copilot, Cursor) to eliminate technical burdens—allowing you to dedicate your efforts to delivering high-impact product features. We seek engineers who can adeptly utilize these tools to propel our 6-week development cycles, accelerating the transition from concept to code, while ensuring the technical integrity and security of the final user experience.Are you poised to make a tangible impact in a dynamic, self-directed environment? We invite you to join our exceptional cross-functional product team in Warsaw as a Backend Engineer.Key Responsibilities:* Collaborate intimately with Product, Design, Frontend, Infrastructure, and Mobile engineers to transition features from discovery to deployment and beyond.* Take ownership of features from concept to observability: encompassing technical design, implementation, testing, and deployment.* Design, develop, and sustain efficient, scalable, and robust Ruby/Elixir code.* Work within a polyglot technology stack (Ruby, Elixir, GraphQL, TypeScript, gRPC) and modern messaging systems (Kafka).* Operate within a Kubernetes-driven framework as we progress towards a microservices architecture.* Apply Domain-Driven Design principles to build high-quality, impactful products from inception to delivery.

TENTENS Tech is a dynamic IT partner of SKELAR, a Ukrainian venture builder focused on creating international tech businesses. We specialize in developing social discovery platforms for over 20 million users worldwide.Our growth is driven by deep expertise in analytics, high-load systems, and performance marketing. The TENTENS Tech team currently consists of more than 250 talented individuals, each acting as a CEO in their role and significantly impacting our collective success. We operate with a 10/10ths approach: we stay focused on our goals, ask the right questions, and never settle for 'good enough'—only excellence and a bit more.We are looking for a passionate Marketing Lead (User Acquisition) to join our team.As a Marketing Lead, you will face exciting challenges including:- Directly influencing growth processes and the ability to launch new channels.- Mentoring other User Acquisition Managers with the potential to lead a team in the future.- Launching and scaling campaigns on platforms such as TikTok, Snapchat, X (formerly Twitter), Quora, etc.- Implementing growth hacking strategies and seeking opportunities for rapid growth outside of traditional marketing schemes.- Evaluating campaign effectiveness by monitoring key marketing metrics and adjusting strategies based on data insights.- Conducting competitor research and analyzing their marketing channels, materials, and user acquisition approaches.- Collaborating with the creative team to produce high-converting ad creatives, setting tasks for designers, and participating in brainstorming sessions.- Working with the product and tech teams to design effective conversion funnels and enhancing user flows.What matters to us:- 4+ years of marketing experience;- Hands-on experience in creating and executing advertising campaigns on Facebook and Google Ads;- Understanding of marketing metrics and their relationship with company financial outcomes;- Data-driven decision-making skills with strong analytical abilities to interpret large volumes of information.Bonus points for:- 2+ years of managerial experience;- Experience with TikTok Ads.What you will gain by joining us:- Access to internal clubs focused on professional areas such as marketing, development, finance, and recruitment;- Opportunities for training, courses, and conference attendance;- Spacious and modern offices in Kyiv and Warsaw;- Medical insurance and a corporate doctor.Join us in building the next big thing!

Join Larian Studios as a Backend Developer, where you'll play a pivotal role in creating immersive gaming experiences. We are looking for innovative thinkers passionate about backend technologies to help design and implement scalable systems that enhance our gaming platforms.

Veeam Software stands as the trusted authority in data and AI, dedicated to empowering organizations to fully understand, secure, and ensure resilience in their data and AI systems. As a leading entity in data resilience and security posture management, Veeam is designed for the fusion of identity, data, security, and AI risk management. With our headquarters in Seattle and a presence in over 30 countries, we safeguard the operations of more than 550,000 customers globally, who rely on Veeam to keep their businesses thriving. Join us as we confidently advance together, fostering growth, learning, and making a significant impact for some of the world's most prominent brands.About the RoleVeeam Data Cloud is experiencing rapid growth, and we are focused on unifying our security strategy across all teams to ensure uniform product protection.We are in search of a Security Tech Lead who will spearhead the design and deployment of standardized security solutions and help establish a dedicated Software Security Engineering platform team. In this capacity, you will collaborate closely with the Director of Security Engineering to translate our cohesive strategy into a practical engineering roadmap, shaping a robust and integrated security framework.What You’ll DoLead the architecture and implementation of shared security primitives across Veeam Data CloudTranslate high-level security strategy into a concrete, prioritized engineering roadmap for cloud services and platform capabilitiesAct as a hands-on technical leader – write and review production code, drive design and code reviews, and provide mentorshipEstablish and promote secure-by-default patterns and shared libraries to streamline security across teamsBuild the foundation for a Software Security Engineering platform to manage shared security services and toolsCollaborate with product, platform, SRE, and compliance teams to ensure security solutions are robust and easy to adoptEnhance security posture through automation, guardrails, and policy-as-codeTechnologies You’ll Work WithLanguages & Frameworks: Go, Python, and TypeScript (and related service/API frameworks)Cloud & Platform: Modern cloud-native architectures (microservices, event-driven systems, multi-tenant SaaS) using AWS, Azure, and GCPSecurity & Identity: Authentication technologies

Teltonika Networks seeks a Tech Lead or Senior Embedded Linux Software Engineer for its Warsaw office. This position centers on developing and enhancing networking solutions that enable industrial connectivity in fields such as Industry 4.0, Smart Cities, and Green Energy. Role overview This role involves building software for both bare metal and embedded Linux devices. The work addresses complex challenges at the intersection of software and hardware, supporting industrial-grade connectivity equipment like routers, switches, gateways, and modems. These products help power modern infrastructure and automation. What you will do Develop software for bare metal and embedded Linux platforms Tackle challenging problems that involve both software and hardware Research and implement new technologies to keep solutions up to date Integrate with hardware components and embedded systems Coordinate with team members in Warsaw and the headquarters in Lithuania Offer technical guidance and mentorship to colleagues About the products The Networking Solutions division designs and manufactures equipment for industrial connectivity. To see the full product range, visit https://www.teltonika-networks.com/products.

Please note that this opportunity requires relocation to our Milan office.About SatispayAt Satispay, we are on a mission to revolutionize everyday payments, making them simple, equitable, and accessible to everyone. Our vision is to shape the future of money, and we are just getting started. Join our movement that empowers millions, driven by a shared purpose to tackle significant challenges. We thrive on speed, bold thinking, and mutual trust, encouraging each other to challenge the status quo while learning and growing together.If you seek more than just another job and wish to create something impactful alongside a talented team, you’ve come to the right place.Your ResponsibilitiesAs a Senior Backend Software Engineer in the Business Team, you will play a pivotal role in shaping the future of digital welfare payments, managing everything from employer benefits to complex products. You will oversee the end-to-end experience for both employers and employees, ensuring long-term satisfaction. Your responsibilities will include:Drive Multi-Service Solutions: Conduct technical analysis for medium-to-large projects impacting multiple employer domain services. Design highly-available, scalable, secure, and maintainable solutions at the core of welfare offerings.Ensure Technical Quality: Implement robust testing strategies, balancing automation and manual coverage, while monitoring gradual rollouts to ensure precise and reliable welfare distributions.Resolve and Anticipate Blockers: Proactively identify and resolve technical obstacles, fostering knowledge sharing across your organization. Address unique challenges in B2B registration flows and high-volume benefit allocations while ensuring code quality through active reviews.Execution and Ownership: Take full ownership of your projects from inception to completion, delivering features that genuinely meet user needs—from employer signup to the first employee spending their welfare benefits—through seamless and efficient backend integration.

TENTENS Tech is a dynamic IT partner of SKELAR, a Ukrainian venture builder dedicated to developing international tech businesses.We specialize in creating social discovery platforms that serve over 20 million users globally. Our growth and scale are driven by deep expertise in analytics, high-load systems, and performance marketing.Our TENTENS Tech team consists of over 250 individuals, each acting as a CEO in their role, contributing to our collective success. We operate with a 10/10ths approach: staying focused on our goals, asking the right questions along the way, and never settling for 'good enough' — we strive for excellence and beyond. If this resonates with you and you're eager to accelerate with us, let's connect!We are currently seeking a Senior/Lead User Acquisition Manager.Key Challenges Awaiting You:- Directly influence growth processes in your area and launch new channels.- Mentor other User Acquisition Managers and potentially lead a team in the future.- Launch and scale campaigns on platforms such as TikTok, Snapchat, X (formerly Twitter), and Quora.- Implement growth hacking strategies and identify opportunities for rapid growth, moving beyond traditional marketing schemes.- Evaluate campaign effectiveness, monitoring key marketing metrics (CTR, CR, CPA, ROI, etc.) and adjusting strategies based on data insights.- Conduct competitive research, analyzing their advertising channels, materials, and user acquisition approaches.- Collaborate with our creative team to develop high-converting ad creatives, setting tasks, participating in brainstorming sessions, and assessing design outcomes.- Work alongside the product and tech teams to create exceptional conversion funnels, enhancing user flow.What We Value:- 4+ years of marketing experience.- Hands-on experience in developing and executing advertising campaigns on Facebook and Google Ads.- Solid understanding of marketing metrics such as CPM, CTR, CPC, CR, CPA, ROAS, ROI, and LTV, and their relationships with company financial results.- Data-driven decision-making approach with strong analytical skills, capable of analyzing large volumes of information and deriving insights.Preferred Qualifications:- 2+ years of managerial experience.- Experience with TikTok Ads.What You Will Gain With Us:- Access to internal clubs focused on professional development in marketing, development, finance, and recruitment.- Training, courses, and opportunities to attend conferences.- Spacious, modern offices in Kyiv and Warsaw.- Medical insurance, corporate benefits, and more.

Join HelloFresh in Warsaw and be a part of our innovative HelloTech organization, which serves as the technological backbone for HelloFresh globally, comprising over 1000 talented individuals. Our mission is to build digital products that facilitate a seamless food experience for our customers. From meal kits and convenient ready-to-eat options to specialized offerings such as pet food and premium meats & seafood, HelloTech develops platforms that deliver personalized food solutions to millions of customers each month. Our subscription-based, direct-to-consumer model integrates technology at every level—from user-friendly applications and personalization algorithms to pricing strategies, forecasting, supply chain optimization, and initiatives aimed at minimizing food waste. While each brand operates independently to cater to unique customer needs, they are unified by shared platforms, data, and operational excellence driven by HelloTech.At HelloTech, we function within autonomous, cross-functional teams, each responsible for a specific product or domain from end to end. By joining our Warsaw office, you will influence the development of scalable, data-driven products utilized across various markets, collaborating with a modern tech stack and international teams to enhance how customers discover, order, and enjoy HelloFresh’s offerings, both now and in the future.

Join the NordPass Team to Revolutionize Password Security!At NordPass, we strive to make online password management effortless and secure. With over 7 million users and 10,000+ companies relying on us, we are committed to providing a premium password manager that safeguards credentials, cards, and sensitive information.Your Contribution: Play a pivotal role in enhancing digital security for millions by developing innovative and secure login solutions.Key ResponsibilitiesCollaborate with cross-functional teams to integrate and optimize microservices across NordSecurity's product ecosystem, ensuring a seamless user experience.Prioritize the delivery of high-quality, scalable, and secure code.Engage in key technical and architectural decisions, refining development processes and shaping the strategic direction of our products.Demonstrate strong ownership over product development, maintenance, and quality assurance.Facilitate effective communication and collaboration among engineering, product, and design teams.Essential QualificationsExtensive experience with PHP (3+ years).Hands-on experience with AI tools to enhance engineering (e.g., code generation, test creation, performance optimization, and debugging), demonstrating accountability for outcomes.Proficient in system design, with a clear understanding of design patterns and their applications.Solid grasp of Object-Oriented Programming (OOP), asynchronous programming, and design patterns.A genuine passion for architecture and technology; we want to hear from those who can create scalable and robust code.Familiarity with core CI/CD principles, unit testing, and integration testing.Preferred QualificationsKnowledge of cryptography.

Develop innovative ideas for refactoring existing systems.Oversee high-level architectural design and ensure it aligns with business goals.Serve as a senior developer and a guiding leader within the team.Demonstrate a proactive approach with a commitment to continuous learning and professional development.Assist business stakeholders and product owners by addressing technical inquiries and ensuring smooth delivery.Communicate complex technical concepts in a clear and understandable manner to non-technical stakeholders.Integrate innovative solutions into daily workflows.Ensure that new components and processes adhere to established architectural standards.Collaborate closely with developers in daily operations.Possess in-depth knowledge of relevant business processes and requirements.Work alongside the Java Competence Lead and other Tech Leads to enhance and streamline processes.Champion operational excellence within the team.Handle administrative responsibilities in collaboration with team members.Conduct technical interviews to assess candidate qualifications.

Are you ready to lead and innovate in a rapidly evolving tech landscape? Join Telemedi as a Tech Lead!We are seeking a Tech Lead for our IT team to drive our ambitious growth while embracing AI in software development. As a Senior Developer, you will adeptly navigate an AI-integrated IDE, ensuring rapid delivery of business value through IT solutions without compromising on code quality.The old ways of IT are behind us; a new era of software development is here. At Telemedi, we are at the forefront of transforming the development process. By combining cutting-edge technologies with technical expertise and exceptional commitment, we can build more, faster, and better than ever before.Our developers work with Cursor AI (cursor.com), an IDE that revolutionizes programming paradigms. We can accomplish in hours what takes other developers days, and we expect the same from you.Apply if you:Desire to work in a product company with a fascinating and complex business domain where your contributions today yield measurable results tomorrow.Thrive on challenges and enjoy working with intricate applications.Flourish in a dynamic environment full of activity.Take initiative and continuously strive to elevate team standards.Feel a sense of responsibility for your work and your team.Welcomingly accept constructive feedback to enhance your performance.Enjoy understanding business needs and communicate effectively with others, not just in IT.Can swiftly and efficiently create quality applications/features.Are confident in your technical knowledge and can enhance application quality, including progressively improving legacy code.Proactively improve processes around you.Your Responsibilities:Set the benchmark for the IT team regarding work standards.Ensure high programming quality and fast task delivery both individually and as a team.Select tasks necessary for achieving business objectives (avoiding tasks that are not immediately beneficial).Participate in the end-to-end creation of IT solutions alongside business departments (here, IT is not a “silo”).Develop web applications (new features, bug fixing, refactoring) - engage in active programming.Contribute to designing the architecture of new solutions and development infrastructure.Participate in code reviews and maintain the quality of created solutions.Continuously enhance development process standards.Collaborate closely with the team (Developers, PMs/POs, QAs).

About Our Team At SumUp, we provide a comprehensive Point-of-Sale (POS) solution designed to empower businesses such as cafes, shops, bars, and salons to streamline operations and foster growth. Our platform encompasses a variety of features including product catalogs, inventory management, business analytics, compliance assistance, and loyalty programs. The Fiscalization team is dedicated to ensuring compliance in countries like Italy, Sweden, Norway, Belgium, and Austria, among others. We are also pioneering the integration with third-party services for fiscalizing receipts. As a Senior Backend Engineer, you will work alongside a vibrant, cross-functional team comprising Product Managers, Designers, Engineering Managers, and fellow engineers. Your Role In this position, you will develop secure backend systems that ensure SumUp's POS products are compliant across various countries on our roadmap. You will collaborate with the Fiscalization squad to devise unique solutions tailored to the challenges in each market. We are looking for a developer who values user-centric design, precision, and seamless collaboration. You will excel in a structured communication environment and thrive in a cross-functional team. This is a B2B role based in Warsaw. Key Responsibilities Design and maintain fiscal compliance solutions to support SumUp's expansion across Italy, Sweden, Norway, Belgium, Austria, and other European markets. Develop integrations with third-party services for receipt fiscalization and regulatory reporting. Navigate SumUp's intricate POS ecosystem and familiarize yourself with fiscalization frameworks across multiple jurisdictions. Work collaboratively with team members and stakeholders distributed across 5+ cities in a hybrid working model. You Will Succeed in This Role If You Have: 5+ years of experience in backend engineering with expertise in Java and/or Kotlin. A solid understanding of system architecture, design principles, data modeling, and API development. Hands-on experience with distributed and fault-tolerant systems. Proficiency in AWS and Kubernetes. Strong knowledge of Kafka, PostgreSQL, and CQRS.