Senior Full Stack Developer - Vue 3, Django, AI Agents

About the role

SD Solutions, a global staffing company, is recruiting on behalf of a MortgageTech client for a Senior Full Stack Developer based in Warsaw. The role builds and evolves core engines for a direct marketplace for whole-loan mortgage transactions, integrating with LOS platforms, due diligence providers and credit and valuation vendors.

Key responsibilities

• Build features across the stack: Vue 3 + TypeScript on the front end, Django + DRF on the back end
• Evolve core engines: loan pricing and investor eligibility matching
• Integrate with the mortgage ecosystem: LOS platforms, due diligence providers, credit and valuation vendors
• Design data models and background pipelines that stay fast as volume grows
• Write tests with pytest, Vitest and Playwright

Required profile

• Daily, hands-on work with AI coding agents (Cursor, Claude Code, Codex or similar), running several in parallel and knowing where their output needs human judgment
• Hands-on experience building AI into a product: LLM features, agents, retrieval, evaluation
• 5+ years building production software with real depth on both sides of the stack
• 3+ years of hands-on Vue.js + TypeScript
• Experience in complex platform companies with real integrations, data and scale
• Proven remote work: shipped from a home office for years, communicates in writing by default
• Excellent written and spoken English; able to work independently and carry several threads at once

Required skills

• Strong Python + Django, solid REST API instincts and real database skills (schema design, query performance, safe migrations)
• Vue.js + TypeScript
• OpenSearch and Playwright

Advantages: fintech or mortgage background. The company describes itself as a direct marketplace for whole-loan mortgage transactions, offering lenders and investors smarter pricing, automated eligibility assessment and end-to-end transaction management.