Note: The job is a remote job and is open to candidates in USA. Zafhires is a fast-growing B2B data and AI platform that assists go-to-market teams in identifying and converting their ideal customers. The Senior Full-Stack Developer will be responsible for building and shipping product features, contributing to the AI copilot, and owning cross-cutting initiatives across the full stack.

Responsibilities

• Flow Pilot — our AI-powered copilot product built on LangChain/LangGraph. You will be adding new tools and agents, making it smarter, giving it more access and knowledge, and shaping its responses. This is the primary near-term focus
• Client-facing product features — anything that touches the customer experience: search filters, analytics pages, data export, enrichment pipelines, and more
• AI-powered automation — building sequences, triggers, and pipelines that help customers close more deals with less manual effort
• Architecture and technical design — contributing to architecture review, writing design docs, and owning technical decisions in your domain
• Code reviews — reviewing teammates' code and having yours reviewed. High quality bar is a core part of the culture

Skills

• 7+ years of professional software engineering experience
• TypeScript — expert level, used across the full stack
• AWS — production deployment experience
• AI tools and LLMs — you are actively using AI in your development workflow today. If you are not all-in on AI, this is not the role for you
• Ability to work independently with ambiguous requirements — you can take a loosely defined problem, structure it, and deliver something real
• Full-stack capability — back end and front end, not a specialist in one
• Strong communicator — you will proactively flag blockers, set up meetings when you need something, and not wait to be told what to do
• LangChain / LangGraph experience — directly relevant to Flow Pilot work
• Node.js — recently added to our stack
• Experience at a startup — you understand what it means to own things in a small team
• Data structures and algorithms proficiency — you will be tested on medium to hard level problems
• PostgreSQL or similar SQL database in production
• Experience with CRM API integrations (Salesforce, HubSpot, MS Dynamics) — helpful but not required for this role

Company Overview