Senior Full-Stack Developer

Role:
Senior Full-Stack Developer (.NET Core/Angular)

Location:
Oakland, CA (3 days onsite)

Duration: 6 weeks

We recently completed a migration of a legacy Microsoft Access application to a modern three-tier web application (Angular front end, .NET Core Web API, SQL Server back end). We are now seeking a senior contractor for a focused 6‑week engagement to stabilize, polish, and enhance the converted application. This is not a from‑scratch build. The core application already exists; the work centers on refining the user experience, closing gaps from the automated conversion, and delivering a prioritized set of customer‑requested enhancements.

The ideal candidate is comfortable working within an existing codebase, making additive, non‑breaking changes, and delivering iteratively.

Angular (Standalone Components, Signals, Reactive Forms, RxJS), .NET Core/C# Web API, SQL Server, Full‑Stack Application Enhancement & Maintenance, UI/UX Modernization, Legacy Application Migration (MS Access to Web).

• Refine and modernize the UI of the converted web application (layout, navigation, forms, responsiveness, accessibility).
• Implement a prioritized backlog of customer‑requested enhancements and feature changes.
• Address post‑conversion issues, inconsistencies, and rough edges left by the Access‑to‑web migration.
• Improve data‑entry workflows, validation, and form behavior to match business expectations.
• Ensure changes are additive and non‑breaking, with attention to maintainability and auditability.
• Collaborate with our team on requirements clarification, review, and acceptance.

• 8–10 years of professional full‑stack development experience.
• Angular — strong hands‑on experience with modern Angular (standalone components, signals, reactive forms; RxJS; component‑based architecture). Experience with a component library such as PrimeNG is a strong plus.
• .NET Core / C# — building and maintaining Web APIs, service/business layers, and clean layered architecture.
• SQL Server — schema design, queries, stored procedures, and data‑access patterns.
• Proven track record polishing and enhancing existing applications (as opposed to greenfield only).
• Strong UI/UX sensibility and ability to translate business feedback into clean, usable interfaces.
• Ability to work independently, communicate clearly, and deliver iteratively against a prioritized backlog.

• Experience modernizing or migrating legacy applications (e.g., MS Access → web).
• Experience with Azure services.
• Experience delivering for public‑sector / government environments and awareness of related security and compliance expectations.
• Familiarity with AI‑assisted development tooling.

• A polished, stabilized web application reflecting the agreed UI changes and enhancements.
• Clean, reviewable commits with additive, non‑breaking changes.
• Regular progress updates and participation in review/acceptance checkpoints.