Senior Software Engineer (GenAI)

Department: Technical

Location: Belgrade

Employment Type: FullTime

About Passport:

At Passport, we empower brands to reach their global potential by delivering the #1 international solutions for direct-to-consumer businesses. What sets us apart is our expertise in international shipping - enabling brands like Carpe, OneSkin, Rhode, GORUCK, and Wildflower Cases to scale globally with ease. Our extensive network, in-house team of logistics and e-commerce experts, integrations with Shopify and other e-commerce platforms, and user-friendly portal make us the trusted partner for growth-focused brands looking to expand internationally and create seamless cross-border experiences.

At Passport our goal is to build the #1 internationalization solution on the market, with shipping as the differentiator.

About the role

Responsibilities

• Lead the development of a multi-agent platform — a reusable foundation of AI agents, tools, orchestration logic, and shared infrastructure.

• Collaborate closely with other teams (e.g., Data, QA, DevOps, Product) to ship AI features end-to-end — from dataset preparation to model integration, deployment, optimization, and monitoring.

• Build and maintain automated AI pipelines using specialized frameworks or custom orchestrators.

• Design robust logging, tracing, and metric systems for AI workloads; analyze performance using Elasticsearch, Prometheus, and Grafana.

• Document architecture decisions, experiment results, and best practices in Notion.

• Use deep GenAI expertise to evaluate trade-offs, propose high-impact solutions, simplify workflows, and maximize value for internal teams and external clients.

• Share knowledge and architectural patterns with the team to strengthen internal GenAI expertise and maintain high engineering standards.

• Provide the full lifecycle of GenAI features — design, development, deployment, monitoring, and long-term maintenance.
  

You have many of the following

(Apply even if you don’t meet every requirement!)

• 5+ years of software engineering experience.

• 2+ years of building Generative AI powered products (especially commercially successful).

• Strong proficiency in TypeScript, Node.js, and modern backend development.

• Hands-on experience with AI frameworks such as LangChain, n8n, or Microsoft Agent Framework.

• Deep understanding of key GenAI concepts: retrieval-augmented generation, fine-tuning, prompt engineering, agent architectures, reinforcement learning, evaluation frameworks.

• Comfortable working with relational, NoSQL, and search-based databases and designing efficient access patterns.

• Clear and confident communicator who collaborates well and aligns technical decisions with stakeholders.

• Able to take complex, ambiguous problems and break them into measurable, actionable tasks.

• Skilled at identifying edge cases early to ensure reliability and predictable behavior in production.

A sneak peek into our perks & benefits:

• Competitive cash and equity packages

• 100% remote work environment #LI-Remote

• Paid Time Off

• 8 weeks Paid Parental Leave

• Monthly team get-togethers - bring on the Zoom comedians, pop-a-shot contests, and sip ’n paints!

• Quarterly virtual team gatherings and biannual team offsites

• Annual Work Smart Fund to support your professional growth & working environment

• Teammates around the world in 20+ different countries!