Job Title: Technical Lead (Python, React & AI) Company: 31 Green Ltd Job Type: Full-Time, Permanent Location: Islamabad (Hybrid) / Remote for other cities in Pakistan Working Hours: 12:00 PM – 09:00 PM Working Days: 5 days a week About the Company 31 Green Ltd is a forward-thinking IT organization focused on delivering innovative digital solutions and scalable software products. We are committed to building high-quality, user-centric products that drive business growth and deliver exceptional customer experiences. The Role: Technical owner of the platform, end to end. Hands-on: writes code, reviews code, makes the architecture calls, sets the engineering standards. Works directly with the founder on product and technical decisions, with product direction and architecture still being defined. The expectation is to build and ship. What You'll Own * The overall architecture: frontend, backend, Al services, database, cloud * Data modelling for fund mechanics - cash flows, NAV, performance metrics, position-level credit data * The analytics engine * The Al layer (conversational Q&A, document ingestion, report generation) * Engineering standards: testing, CI/CD, security, observability * Technical decisions and the trade-offs behind them   What We're Looking For Stack * 8-12 years shipping production software, ideally with private credit, private markets, or capital markets experience * 3-5 of those years in a tech lead or staff engineer role. * Shipped LLM features to production users - evals, guardrails, prompt versioning, cost control. * Comfortable across the whole stack, with real depth in backend and data * Strong in Python and TypeScript/Node, fluent in React/Next.js * Strong on PostgreSQL and data pipelines - schema design, query performance, ETL/ELT, analytical workloads at scale * Built and operated systems handling significant data volume and concurrency in production. * Production experience with AWS — IAM, networking, S3, RDS, containerised workloads * Designs for security, auditability, and data sensitivity from day one - not as an afterthought * Decisive and pragmatic. Moves forward with sound judgement rather than waiting for perfect information Stack: Next.js, NestJS, FastAPI, PostgreSQL with pgvector, AWS (S3, RDS, IAM, containerised workloads), LangChain and LangGraph for orchestration, LiteLLM for model routing, AWS Textract for OCR. Docker and infrastructure-as-code. Compensation & Benefits * Competitive salary in PKR * Salary will be processed in PKR, and tax will be deducted as per applicable laws * Hybrid work model (Islamabad office + remote flexibility for other cities) * Health insurance including In-Patient (IPD) and Out-Patient (OPD) coverage * Life insurance coverage, accidental & Emergency coverage. * Annual leave, sick leave, maternity leave, and paternity leave as per company policy * Professional growth and learning opportunities * Collaborative and innovative work environment How to Apply Please send your CV to: [email protected] or [email protected]