Senior Full Stack Engineer, Platform

Bolt; Warszawa; On-site; PLN 180,000 - 320,000; Full time

Job summary

Bolt in Warsaw is seeking a Senior Full Stack Engineer to architect, design, and deploy scalable internal products, primarily using Node.js, React, and TypeScript. You’ll work closely with product and operations teams to deliver practical, low-friction solutions that improve how agents operate.

You are comfortable with microservices, APIs, and production-grade web apps, and you’ll mentor peers while raising frontend standards across the team.

Qualifications

• Proficient in building scalable web apps with modern JS frameworks.
• Strong knowledge of Node.js, React, and TypeScript.
• Experience designing robust APIs and frontend architectures.

Responsibilities

• Build and maintain modular UI micro frontends that scale.
• Collaborate with stakeholders to design backend systems and APIs.
• Lead features from idea to delivery with cross-functional teams.
• Mentor engineers and set frontend best practices.
• Drive internal product improvements to boost productivity.

Skills

Node.js

React

TypeScript

Frontend architecture

API design

Job description

About Bolt

Bolt is shaping a future where cities are built for people, not cars. What started as an ambitious project of a 19-year-old in 2013 has grown into a global mobility platform used by more than 200 million customers and 4.5 million driver and courier partners across 50 countries.

About Bolt

Bolt is shaping a future where cities are built for people, not cars. What started as an ambitious project of a 19-year-old in 2013 has grown into a global mobility platform used by more than 200 million customers and 4.5 million driver and courier partners across 50 countries. From ride-hailing and food delivery to scooters, e-bikes, and car-sharing, Bolt helps people move through cities every day. Small, autonomous teams drive this work, combining the speed and ownership of a startup with the scale of a global technology company backed by more than €1bn in funding. And we're just getting started.

Why join Bolt?

• Build the future of mobility and help transform how people live and move in cities.
• Tackle challenges at scale that span technology, operations, regulation, and growth.
• Take real ownership early. Small, lean teams mean your decisions matter from day one, and you'll learn fast alongside some of the best people in the industry.
• Join one of Europe's leading technology companies, backed by world-class investors including Sequoia.

About The Role

As a Senior Full Stack Engineer, you will help your team architect, design, develop, and deploy scalable internal products that include both backend services and user-facing interfaces. You’ll mostly work with Node.js, React, and TypeScript – though prior experience with Node.js is not required. Collaboration with internal stakeholders will be key to building thoughtful, maintainable solutions that meet business needs with low operational overhead. Your work will focus on enhancing our internal task management product, improving the efficiency and reliability of how tasks are distributed and executed. By building tools that empower agents and streamline operations, you’ll drive meaningful improvements in internal productivity and help the business scale more effectively.

Main Tasks And Responsibilities

• Build and maintain modular, high-performance UI micro frontends that are easy to scale and integrate
• Collaborate with stakeholders to design backend systems and APIs that effectively support evolving business needs
• Lead features and initiatives from idea through successful delivery, working closely with Product to break down scope
• Contribute to the product roadmap by offering ideas, feedback, and technical insight throughout the development process
• Mentor engineers through code reviews and direct guidance, and set frontend best practices across the team

About You

• You have experience of thriving in an environment that has a fast customer-feedback cycle, and having empathy for the end-user
• You are great at making data-driven and metric-driven decisions
• You have a drive for leading initiatives and features till the end, even if the last mile is the hardest
• You have deep frontend expertise in architecting and building modern, production-grade web applications at scale.
• You feel at home with microservice architecture, and you are experienced in API design
• You write clean, secure, and maintainable code and set the technical standard that others on the team build from.

Some perks may differ depending on your location and role.

At Bolt, using AI daily is a baseline expectation for everyone. If there's a faster, smarter way to do your work, we expect you to find it. You're still responsible for the output, so the standard stays high when using AI tools. Experience is great, but what we really look for is drive, intelligence, and integrity.

Everyone is welcome

Bolt is an equal opportunity employer. We are committed to building a diverse and inclusive workplace where all qualified applicants are considered for employment without regard to race, colour, nationality, religion, gender or gender identity, sexual orientation, age, or disability. We welcome applications from all backgrounds and are happy to make reasonable accommodations throughout our hiring process. If you require any adjustments, please let us know.