Skip to main content
Rainier Software
Hire us

Software subcontracting

Software subcontractor for federal primes

Give the software work package a team that can own it through handover. Rainier is a Washington-based, principal-led engineering firm building applications, APIs and integrations for government and enterprise work.

Discuss your software scopeDownload capability statement

Small business · UEI RGM1E2MJCBD9 · CAGE 17PL6 · Primary NAICS 541511

A defined scope, with clear boundaries

Applications and operator workflows

React and TypeScript interfaces backed by explicit domain models. Define the workflow, permissions, accessibility requirements and acceptance scenarios before implementation.

APIs and integrations

Python and Node.js services, data contracts and integrations with existing systems. Establish dependency ownership, failure behavior and test environments with the prime.

Modernization work packages

Bounded changes to an existing application: replace a workflow, introduce an API, or improve a component. Agree migration, coexistence and recovery before changing the system of record.

Set the compliance requirements against the actual systems and data in the work package. We assess those requirements during scoping; a service description is not evidence of a particular clearance, certification or authorization.

Delivery evidence

A scheduling portal delivered under subcontract

A flight scheduling and schedule-management portal delivered under subcontract for a U.S. Air Force program, covering sortie scheduling, crew and aircraft assignment, deconfliction, and routing.

Role
Subcontractor
Period of performance
12 months

Python owns the scheduling model and conflict rules; React and Material UI provide the operator interface. Review the published scope and approach to judge its relevance to your acquisition.

Read the Vennli case study

From work package to working increment

  1. 01

    Share the scope

    Send the work package or statement of work, target schedule, stack, integration dependencies, and the security and accessibility requirements that apply.

  2. 02

    Confirm fit and responsibilities

    We review the technical scope, availability and division of work. Identify what the prime supplies, what Rainier owns, and which assumptions affect the estimate.

  3. 03

    Agree delivery and handover

    Define reviewable increments, acceptance evidence, repository access, documentation, rights and transition responsibilities in the subcontract.

For buying routes, registration details and the distinction between federal and state socioeconomic credit, see how to contract with Rainier. For the firm's leadership and delivery background, see Gianluca Vaccarini's biography.

Resources for evaluating and managing the work

Send us your scope