Hire pre-vetted PostgreSQL Developers

A bad PostgreSQL hire costs more than a slow query. A schema built without thinking through tenant isolation, an ORM left to open a new connection per request, a migration that locks a production table during checkout hours: these mistakes don't show up in a demo. They show up months later, after another team has already built features on top of them, and unwinding the damage costs far more than the original hire would have.

Cortance's PostgreSQL developers are vetted for the work of building on PostgreSQL, not running it: schema design, query optimization, and backend integration. If what you need day to day is replication, backups, and failover tuning, our PostgreSQL Administration Developers are the closer match; this page is for the engineers who design the data layer your application depends on.

What separates a PostgreSQL developer from someone who has merely used it

Anyone can spin up a database and call it done. What matters is what happens after: a multi-tenant schema that doesn't leak one customer's data into another's query plan, and an index strategy chosen because the actual query patterns were profiled, not guessed at. An ORM configuration that doesn't quietly open a hundred connections under load matters just as much once real traffic hits it. Our vetted PostgreSQL developers write PL/pgSQL, model JSONB against relational tables where each makes sense, and integrate cleanly with the ORM your backend already runs, whether that's Prisma, SQLAlchemy, ActiveRecord, or Hibernate.

What has our PostgreSQL bench actually built?

1. Vladyslav K., Senior Data Engineer (Ukraine): 5 years of PostgreSQL as a core skill, built across fintech and machine learning work.
2. Mustafa Saygın, Verified Fullstack/Backend Developer: 15 years overall experience, PostgreSQL core across fintech and insurance projects.
3. Oleksandr K., Senior Java Engineer (Poland): PostgreSQL core skill built across banking, fintech, and data analytics work.

One case worth expanding on: Abrham Muche, a full-stack developer with 3 years of core PostgreSQL experience, worked on KYG Trade, an enterprise-grade platform for AI-native trade and tariff management. Trade-compliance software is a demanding domain for a database, since the rules the schema has to represent shift constantly, and a design that cannot absorb that change without a rewrite becomes a liability fast. That's the kind of problem a developer who treats schema design as a first-class skill, not an afterthought, is hired to prevent.

Where our PostgreSQL developers plug into your stack

Most of the work happens at the application boundary: schema design for new features, query optimization when a report or dashboard starts timing out, and clean integration between PostgreSQL and whatever backend runs on top of it, Node.js, Python, Ruby, or Java, through the ORM your team already uses. That includes indexing strategy chosen from real query patterns and partitioning for tables that outgrew their original design. JSONB comes into play too, but only for data that genuinely doesn't need its own table.

Less time hunting root causes, more time shipping

Our PostgreSQL developers use AI-assisted tooling to speed up two specific parts of the job: tracing a slow query back to the actual index or plan problem instead of guessing, and drafting schema migrations that a developer then reviews line by line before they touch production. Neither replaces judgment on a live database, but both cut the hours spent on the routine half of the work, leaving more time for the schema and query decisions that actually need a person.

Every PostgreSQL developer we put in front of you is matched against your actual stack and workload, not a generic skill checklist, and how we match developers to your project is worth understanding before you commit to a hire. Share your requirements and we'll send a shortlist of vetted PostgreSQL developers ready to work on your schema, your queries, and your backend.