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This tender closed on 7 October 2026 — kept here for reference.

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ClosedtenderUnited States

Application Arsenal (AA) Enterprise Engineering and Lifecycle Support _*Seaport Contract Holders Only

Issued by DEPT OF DEFENSE · DEPT OF THE NAVY · SPAWAR · SPAWAR PACIFIC · NIWC PACIFIC · via SAM.gov — US federal contract opportunities

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Published
28 Sept 2026
Closed
7 Oct 2026, 21:00 UTC
Reference
N6600126R3507
Location
United States
Sector
Construction & Infrastructure

This notice was amended

Details changed after publication. Re-check the official notice before bidding.

  • Submission deadline changed from 30 Sept 2026, 21:00 UTC to 7 Oct 2026, 21:00 UTC
    First seen by FreeTender on 29 Sept 2026 — most portals don’t publish when a corrigendum was issued.

At a glance

DEPT OF DEFENSE · DEPT OF THE NAVY · SPAWAR · SPAWAR PACIFIC · NIWC PACIFIC in United States has published a tender in construction & infrastructure: “Application Arsenal (AA) Enterprise Engineering and Lifecycle Support _*Seaport Contract Holders Only”. The deadline passed on 7 October 2026. Quote reference N6600126R3507 in any correspondence with the buyer. FreeTender has recorded 12 notices from this buyer since 2026, 2 of them currently open. There are 409 open construction & infrastructure notices in United States on FreeTender. Bids are submitted to the buyer through SAM.gov — US federal contract opportunities, not through FreeTender.

Key requirements

Taken from the notice by FreeTender. The tender document on the official portal is binding — check it, and any corrigendum, before you bid.

To bid on SAM.gov (US federal)

You need an active SAM.gov entity registration with a Unique Entity ID (UEI) to be awarded a federal contract. Check the set-aside and NAICS size standard before you respond.

Details

DEPT OF DEFENSE · DEPT OF THE NAVY · SPAWAR · SPAWAR PACIFIC · NIWC PACIFIC is soliciting Application Arsenal (AA) Enterprise Engineering and Lifecycle Support _*Seaport Contract Holders Only. Solicitation number N6600126R3507. Classified under NAICS 541330 — Engineering Services. Product/service code AJ13 — PHYSICAL SCIENCES (ADVANCED). Responses are due by 07 October 2026 21:00 UTC. Posted on SAM.gov, the US federal contract opportunities system; registration is required to bid.

The Naval Information Warfare Center -Pacific (NIWC-PAC) Command and Control Systems Division, Code 53200, has a requirement for full lifecycle of systems engineering and software sustainment for the Application Arsenal (AA) platform. The contractor shall provide all necessary personnel, materials, and services to perform the tasks outlined in the SOW. Please see the Statement of Work and additional attachments for more information. *This requirement is for SEAPORT CONTRACT HOLDERS ONLY. Please include your Seaport Contract Number in any correspondence with the Government.

This notice has closed — what to do next

We hold 12 notices from DEPT OF DEFENSE · DEPT OF THE NAVY · SPAWAR · SPAWAR PACIFIC · NIWC PACIFIC, going back to September 2026 — 2 of them still open. They buy mostly in Construction & Infrastructure, Electronics & Semiconductors and Facility Management & Cleaning. There are 409 open Construction & Infrastructure tenders in United States.

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Before you bid on this tender

A quick checklist to help you decide whether to bid and prepare a compliant submission for this construction & infrastructure opportunity. Always verify the details on the official source.

  • Confirm the exact closing date and time (and time zone) on the official portal — deadlines are strict and can be revised by a corrigendum.
  • Read the full notice and every attached document, including the scope, specifications and any bill of quantities or terms of reference.
  • Check the eligibility criteria — prior similar experience, annual turnover, certifications and registrations — and make sure you qualify before investing effort.
  • Prepare any earnest-money deposit (EMD) or bid security and the required formats early; missing or wrongly-formatted documents are a common cause of rejection.
  • Note how bids must be submitted (online or physical), in what format, and whether a digital signature or portal registration is required.
  • Watch for corrigenda and clarifications right up to the deadline — requirements and dates can change.
Common bidding mistakes to avoid →Writing a winning proposal

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