Staff Backend Engineer, AI Applications, Bucharest

We are looking for a Staff Backend Engineer, AI Applications to join Bolt’s Customer Support Automation team and architect the core AI agent infrastructure that powers our automation stack. You will have the opportunity to design and build multi-age nt orchestration frameworks, routine execution engines, and evaluation (LLM evaluations) and tracing pipelines that are scaling Customer Support automation. If you are passionate about agentic AI, distributed systems, and building platforms that operate at massive scale, this role will perfectly suit you.

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.

We believe in creating an inclusive environment where everyone is welcome, regardless of race, colour, religion, gender identity, sexual orientation, national origin, age, or disability.

Our ultimate goal is to make cities for people, not cars, and we need your help to achieve this mission!

As a Staff Engineer, you will operate at the intersection of advanced AI and Bolt’s production engineering ecosystem, setting the technical direction for conversational experiences that are personalized, empathetic, and natural, while meeting strict business, compliance, and reliability requirements. This is a high-impact, high-scope role where you will guide platform evolution, amplify the effectiveness of multiple teams, and deliver resilient systems that enhance customer experience at a global scale.

• Define and evolve the technical vision for next-generation conversational assistants, setting architecture and long-term direction across multiple teams and partner orgs.


• Drive adoption of scalable patterns for agentic AI systems, including orchestration, memory, tool use, and multi-channel consistency.


• Design and productionize GenAI-powered customer support systems, covering agent frameworks, tooling, guardrails, observability, and backend services.


• Build reusable platform capabilities that enable teams to develop, deploy, and iterate on conversational experiences reliably


• Cross-org technical leadership and alignment: Identify ecosystem gaps and define interfaces, standards, and integration patterns across teams. Lead cross-functional alignment and execution, influencing roadmaps and driving consensus on platform direction.

We are not really looking for Node.js experts, but for cross-language engineers for whom a specific stack is just a tool to solve a problem, not the solution itself.

• You have experience of thriving in an environment that has a fast customer-feedback cycle and having empathy for the end-user


• You have a data-driven mindset with comfort around ML evaluation methodology - you know how to measure whether an AI system is actually working


• You have a drive for leading initiatives and features till the end, even if the last mile is the hardest.


• You have strong system design skills, particularly in distributed systems, event-driven architectures, and high-throughput data pipelines.


• You have hands-on experience with LLM-based pipelines or agentic AI patterns (tool use, routing, state machines, multi-agent coordination).


• You possess solid understanding of algorithms and data structures.

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 if you feel you’re the kind of person described above!

• Play a direct role in shaping the future of mobility.


• Impact millions of customers and partners in 600+ cities across 50+ countries.


• Work in fast-moving autonomous teams with some of the smartest people in the world.


• Accelerate your professional growth with unique career opportunities.


• Get a rewarding salary and stock option package that lets you focus on doing your best work.


• Enjoy the flexibility of working in a hybrid mode with a minimum of 2 days in the office each week to foster strong connections and teamwork.


• Take care of your physical and mental health with our wellness perks.

*Some perks may differ depending on your location and role.

#LI-Hybrid