00 / services

Senior engineering for the part that needs to work.

I can help shape the technical path, work directly in an existing codebase, build the difficult integration, or review code that moved faster than the engineering around it.

Tell me about the work

Services

Each engagement starts with the actual product problem. The service is the form the work takes after I understand what needs to change.

Product problem → technical plan

When to contact me

Contact me when the product goal is understood but the requirements, scope, or technical path are not.

What I can do

I clarify product intent, inspect the relevant system, surface constraints and turn the problem into a small sequence of technical decisions and tasks.

What you receive

A buildable plan with scope, data flow, edge cases, trade-offs and a clear next step.

Example problems

Turning a rough feature brief into reviewable work
Choosing between extending the current model or introducing a new one
Defining permissions, state changes and failure paths
Reducing an oversized feature to a useful first release

Product features and existing systems

When to contact me

Contact me when a feature needs hands-on implementation or an established application needs a careful change.

What I can do

I learn the codebase, choose an approach that fits its conventions, and work directly on the models, APIs, jobs, tests and user-facing flow needed to ship.

What you receive

Working, reviewed code that fits the existing system, with decisions and operational concerns made explicit.

Example problems

Adding a product workflow to a Ruby on Rails application
Changing a fragile area without starting a rewrite
Refactoring the part that blocks the next feature
Tracing and fixing production behaviour across jobs and services

Integrations and data flow

When to contact me

Contact me when a third-party API, webhook, identity flow, billing system or data boundary has become difficult to trust.

What I can do

I map the data flow, define ownership and failure handling, then implement or repair the integration with observability and recovery in mind.

What you receive

An integration that is easier to operate, debug and change, plus a clear record of important assumptions.

Example problems

Making webhook processing replay-safe
Designing retries and recovery for external API failures
Correcting duplicated or inconsistent data between systems
Reviewing authentication, permissions and sensitive data flow
Building a dependable import or synchronisation process

AI-assisted code under senior review

When to contact me

Contact me when AI helped produce code quickly but nobody senior has verified whether the result is safe to extend or ship.

What I can do

I review assumptions, architecture, security, data integrity, error paths, tests and maintainability. I can also implement the corrections that matter.

What you receive

A practical risk assessment, clear priorities and dependable code where changes are required.

Example problems

Reviewing a feature created with an AI coding tool
Checking authentication and authorization boundaries
Finding duplicated logic and unsafe data assumptions
Adding missing failure handling and meaningful tests

Have a real problem in front of you?

A rough brief is enough to start. I’ll tell you whether I can help and what the next useful step is.

Tell me about the work