Founding Engineer

Talently (United States); Buenos Aires; Hybrid; ARS 108,125,000 - 169,910,000; Full time

Job summary

Talently is seeking an experienced software engineer who designs systems, not just features. You will own architecture for data-driven products, with Python backends (FastAPI/asyncio) and modern TypeScript frontends (Next.js/React).

You have proven capabilities in data modelling, ontologies, and enterprise integrations. You will drive testing, observability, and SRE practices, while contributing to a software factory mindset.

Qualifications

• Designs systems with clear module boundaries and small interfaces.
• Experience building scalable backends in Python (FastAPI/asyncio).
• Strong focus on data modelling, ontologies and governance.
• Proficient in frontend with TypeScript (Next.js/React).
• Leadership in testing strategies: TDD, integration, canaries, e2e.

Skills

Data modelling & ontologies

AI agents

Software architecture

Testing & quality

SRE & DevOps

Enterprise integrations

Backend Python

Frontend TypeScript

Operating velocity

Tools

FastAPI

asyncio

Next.js

React

Turborepo

pnpm

GitHub Actions

Grafana

Postgres

Job description

You've done this before. You helped take a startup from pre-seed or seed to Series A or B. You personally built the systems that carried it through that growth and can explain where they held up, where they failed, and what you changed.

You design systems, not just features. You've given a growing codebase clear module boundaries and small interfaces. You can defend a design against a credible alternative and recognize when the alternative wins.

And you have expertise in one or many of these areas:

Data modelling and ontologies. Migrations, schema design, query plans, lock contention. You've modelled domains where business meaning was load-bearing: taxonomies, lineage, versioning, governed terms.

AI agents. Agentic harnesses, context management, tools and MCPs, evals, observability, memory and continual learning, search and retrieval, vector databases, knowledge graphs, coding agents and skill generation.

Software architecture. You know when to apply architectural patterns including DDD, hexagonal, event-driven, state machines, modular monolith vs services, layered dependencies. SOLID and composition-over-inheritance are muscle memory. Refactors don't scare you.

Testing and quality. TDD, integration, canaries, e2e - you know which to reach for.

SRE and DevOps. Continuous delivery, blue/green or canary, feature flags, instant rollback. Dashboards, alerts, SLOs, preview envs. You've carried a pager.

Enterprise integrations. ERP, 3PL, or retailer portal in your past. NetSuite, Shopify, Xero, SAP, Snowflake - any is a strong signal.

Backend in Python. 4+ years of experience in production. FastAPI / asyncio fluency. You spot event-loop blockers in review.

Frontend in TypeScript. 3+ years of experience shipping real Next.js or React.

Operating velocity. AI-assisted dev as default - Claude Code, Cursor, Codex. You dream of building a software factory.

Data: Supabase / Postgres, Analytical DB agnostic (Snowflake, Bigquery, Redshift, Clickhouse, etc)

Observability: Grafana

Repo: Turborepo, pnpm, GitHub Actions, isolated PR previews (frontend + backend + DB branch per PR)