Services and APIs
The services behind the product are getting risky to change.
Fits when A product team that needs those services built, repaired, or made easier to keep changing as the product grows.
- API design and implementation in TypeScript, Node.js, and NestJS.
- Modular services, and refactoring aimed at maintainability.
- Authentication and authorization where the product actually needs them.
- Background work, and a focused look at the parts of the codebase that hurt.
The aim Services the team can change, with a clearer structure and fewer surprises in the business rules.
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PostgreSQL, data, and performance
Data-heavy paths are slow, awkward to change, or hard to trust as volume and concurrency grow.
Fits when Teams whose product depends on queries, transactions, or a migration they cannot afford to get wrong.
- Schema, SQL, and index review.
- Transaction boundaries and concurrency.
- Data-access patterns that match how the product actually reads and writes.
- Migration planning, including large tables, plus retention and archival when old data should leave the hot path.
The aim Clearer data access, and a practical plan for the queries and migrations that are in the way.
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Integrations and event-driven workflows
More of the product now depends on other systems, and those connections are hard to trust.
Fits when Teams taking in third-party data, or passing work between services, where duplicates and partial failure matter as volume grows.
- Third-party APIs, ingestion, and normalizing inconsistent data.
- Messaging and asynchronous processing.
- Retries, idempotency, and duplicate handling.
- Outbox or event-driven patterns when they fit, plus failure handling you can see.
The aim Integrations that fail visibly, and that do not apply the same work twice.
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