Senior Backend Engineer
First seen by Alion on Nov 4, 2026.
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 Backend Software Engineer based in Tallinn, you will be responsible for architecting, designing, developing, and deploying Bolt's growing backend systems, mostly via coding in Node.js and TypeScript (no prior Node.js experience needed). You'll work on unique product challenges including complex algorithms for demand prediction, optimal real-time pricing, routing, fraud detection, and distributed systems, collaborating closely with key internal stakeholders to scalably design backend systems and APIs.
Main tasks and responsibilities:
Architect, design, develop, and deploy Bolt's growing backend systems.
Collaborate with key internal stakeholders to scalably design backend systems and APIs to meet their needs.
Help lead features and initiatives from idea to positive execution.
Work closely with Product to slice scope and deliver piece by piece.
Contribute ideas and constructive feedback to our product development roadmap.
Share knowledge by giving tech talks and promoting engineering best practices in and outside of the team.
About you:
You thrive in fast-paced, customer-feedback-driven environments and have empathy for end-users.
You excel at making data-driven, metric-based decisions and leading initiatives through to completion.
You have expertise in microservice architecture, API design, and distributed high-volume systems.
You have strong principles towards writing clean, secure, maintainable, readable, and testable code.
You are experienced with cloud systems (AWS, Azure, Google Cloud) and relational databases.
Familiarity with real-time and asynchronous systems and highly available infrastructure is a plus.
Why you’ll love it here
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.
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. So even if you don’t tick every box, please consider applying!
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.