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Bug fixing and maintenance

Diagnosing and fixing problems in existing codebases, plus ongoing updates, dependency upgrades and monitoring. This service is for a project that already exists and needs to keep working, rather than a new build from scratch.

Problems this service solves

  • A specific bug or broken feature on a live site or application

  • Dependencies that have fallen out of date and need upgrading safely

  • No one currently monitoring the site for errors or downtime

  • A codebase that's grown unclear or difficult to work in over time

Who this is for

A business with an existing website or application — whether or not NexaStack originally built it — that needs fixes, upgrades or ongoing upkeep rather than a new project. Equally realistic as a one-off fix or an ongoing arrangement, depending on what's needed.

What’s included

  • Root-cause diagnosis of reported bugs, not just a surface-level patch

  • Dependency upgrades, checked against the project's existing test suite where one exists

  • Error monitoring and health-check setup

  • Structured logging so future issues are easier to diagnose

Development approach

Doesn't follow the full eight-step build process, since there's no new product to plan and design — instead scoped around requirement analysis (what's broken or needs updating) and testing, so a fix doesn't introduce a new regression.

See the full process

Technologies used

  • ESLint
  • Prettier
  • pnpm
  • Git & GitHub

Expected deliverables

  • A written summary of what was diagnosed and fixed

  • The fix or update deployed to production

  • Source code repository access reflecting the change

  • Monitoring or logging improvements, where part of the agreed scope

Estimated timeline

There’s no fixed timeline for this service — it depends on scope, how many integrations or third-party pieces are involved, and how quickly feedback comes back during review. You’ll get a project-specific timeline as part of your quote, not a generic estimate.

Get a project-specific estimate

Related projects

Portfolio examples for this service are on the way — see the full Featured Portfolio for current work.

Frequently asked questions

Ready to talk about your project?

Tell us what you’re building and we’ll scope bug fixing and maintenance around what your project actually needs.

Request a Quote