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21st Century Software, Inc.

UEI: SLED_8C0B6E086BA65290

21st Century Software, Inc. is a federal contractor, registered under UEI SLED_8C0B6E086BA65290. It has been awarded $12,385,853 in federal contracts. Primary work spans Engineering Services and Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology).

Contact Information

Registration and classification details

Registration

UEI Code

SLED_8C0B6E086BA65290

Federal Contracting Overview

Award totals, agency breakdown, NAICS distribution, and geographic footprint.

AI Capability Profile

21st Century Software, Inc. provides professional services focused on engineering and technical consulting. Their capabilities encompass software development and engineering services, as well as specialized engineering management and consulting. The company operates within the software development ...

Key Performance Metrics

Awards Count

2

All time

Active

0

Currently performing

Completed

0

Past period of performance

Total Awards

All time

Contracts

Prime · all time

Subcontracts

Sub · all time

Grants

Prime · all time

Subgrants

Sub · all time

Award Analytics & Distribution

Awards by Agency

$12.4M100%

Awards by NAICS

541330 - Engineering Services$7.2M58.3%541712 - Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology)$5.2M41.7%

Awards by Agency Over Time

Awards by Place of Performance

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Geotechnical Instrumentation and MonitoringThis subcontract opportunity with Cleary Construction, Inc. involves providing geotechnical monitoring and instrumentation services for municipal sewer improvement projects. The selected contractor will be responsible for ensuring ground stability by installing and managing geotechnical sensors, inclinometers, and settlement markers to track soil and ground movement. A critical requirement for this engagement is that all reporting must be completed by a Professional Engineer (PE). The project is designated as a small business set-aside, welcoming applications from SBA certified Veteran Owned, Service-Disabled Veteran Owned, Women-Owned, and HUBZone small businesses. Interested parties must submit their responses by December 4, 2026, under NAICS code 541330. The primary deliverables include the provision of detailed instrumentation data and comprehensive monitoring reports.

Cleary Construction, Inc. Cleary Construction, Inc

POSTED

about 4 hours ago

DEADLINE

in about 1 month

Pure Water Southern California Direct Potable Reuse Testing Facility

Solicitation # pure-water-southern-california-direct-potable-reuse-testing-facility

Kiewit Infrastructure West Co. is seeking proposals for the Pure Water Southern California Direct Potable Reuse Testing Facility project located in California. This solicitation is specifically set aside for small businesses, including SBA certified Veteran Owned, Service-Disabled Veteran Owned, and Women-Owned Small Businesses, falling under NAICS code 541330. Interested parties must submit their responses by November 3, 2026. The primary point of contact for this opportunity is Sepideh Aria, who can be reached via email or phone for further coordination regarding the solicitation details.

Kiewit Infrastructure West Co.

POSTED

about 4 hours ago

DEADLINE

Business Impact Analysis and Update Disaster Recovery Plan Services – Inland Empire Utilities Agency

Solicitation # business-impact-analysis-update-disaster-recovery-plan-services-inland-empire-utilities-agency

Aanko Technologies Inc. is soliciting certified Disadvantaged Business Enterprise and Small Business Enterprise sub-consultants and suppliers to provide professional services for the Inland Empire Utilities Agency in San Bernardino and Riverside Counties, California. The scope of work focuses on emergency management, business continuity planning, technical writing, data collection, and the updating of IT and disaster recovery plans. Eligible firms should fall under NAICS codes related to administrative management, engineering services, computer systems design, or public relations and technical writing. Interested parties must submit their responses by November 17, 2026. Primary inquiries regarding this solicitation should be directed to Liz Jordan-Wettstein.

Aanko Technologies Inc.

POSTED

about 4 hours ago

DEADLINE

Planning-Level Concept Exhibit & Feasibility SpecialistThis subcontract opportunity is for a Planning-Level Concept Exhibit and Feasibility Specialist to support prime contractors on Orange County Transportation Authority projects. The selected provider will be responsible for developing preliminary project definitions and visual concept exhibits, framing the purpose and need of projects, and identifying operational and physical constraints. Technical requirements include the use of CAD software and GIS, with a strict mandate to comply with Level 1 HSE Specifications. Key deliverables for this engagement include concept exhibits, priority segment profiles, and implementation readiness summaries. The solicitation was posted on October 27, 2026, with a response deadline of November 30, 2026. This role falls under NAICS code 541330 and is managed through the Planning and Analysis division in California.

Planning-Planning & Analysis

POSTED

about 10 hours ago

DEADLINE

in about 1 month

Planning-Level Traffic and Revenue AnalystThis subcontract opportunity is for a Planning-Level Traffic and Revenue Analyst to support prime contractors on Orange County Transportation Authority projects in California. The selected party will conduct high-level assessments of transportation needs and revenue potential, focusing on modeling planning-level tollable demand and analyzing transit considerations along with access and egress. The scope of work requires the use of specialized traffic modeling software and revenue forecasting tools to deliver priority segment profiles and comprehensive summaries of operations, traffic, and revenue. The project falls under NAICS code 541330 and requires strict compliance with Level 1 HSE Specifications. Interested parties must submit their responses by the deadline of November 30, 2026. The primary objective is to provide the necessary data and analysis to determine expected operating benefits for critical transportation infrastructure.

Planning-Planning & Analysis

POSTED

about 10 hours ago

DEADLINE

in about 1 month

Managed Lanes Planning and Segment Screening SpecialistThis subcontract opportunity is for a Managed Lanes Planning and Segment Screening Specialist to support prime contractors on Orange County Transportation Authority projects. The selected provider will be responsible for performing technical analysis, inventorying existing and planned managed lane facilities, and developing risk-based screening methodologies to recommend priority segments. Key deliverables include segment inventories, detailed maps created with GIS software, and editable screening workbooks. The project falls under NAICS code 541330 and requires strict compliance with Level 1 HSE Specifications. Interested parties must submit their responses by November 30, 2026, to support the Planning and Analysis division within the state of California.

Planning-Planning & Analysis

POSTED

about 10 hours ago

DEADLINE

in about 1 month

Orange County Managed Lanes Segment Advancement Study C265256

Solicitation # C265256

The Orange County Transportation Authority is soliciting professional services for the Orange County Managed Lanes Segment Advancement Study, identified as Agreement No. C265256. The primary objective of this firm fixed price contract is to evaluate existing, planned, and potential managed lane facilities in Orange County to identify up to two priority segments most suitable for advancement into the Project Initiation Document phase. The study is estimated to take 18 months and is budgeted at 350,000 dollars. The scope of work is divided into four primary tasks: project management and coordination, segment inventory and priority selection, priority segment advancement assessment, and the delivery of a final study report with supporting technical files. The selection process is based on identifying the proposal most advantageous to the Authority, with a competitive range and a potential Best and Final Offer phase. Awarded consultants must provide key personnel, maintain comprehensive insurance, and adhere to Level 1 Health, Safety and Environmental Specifications. Administrative requirements include monthly electronic invoicing with a ten percent retention fee, which is released upon final acceptance. The contract is managed by Project Manager Carolyn Mamaradlo and Senior Contracts Administrator Josie Mellen, with all proposals required to be submitted electronically via the OpenGov Procurement portal by November 30, 2026.

Planning-Planning & Analysis

POSTED

about 10 hours ago

DEADLINE

in about 1 month

SAT Commissioning and Technical Start-up ServicesThe Nebraska Public Power District is seeking a subcontractor to provide SAT Commissioning and Technical Start-up Services for DVR systems at the Cooper Nuclear Station. The selected provider will be responsible for delivering technical direction and on-site support to prime contractors, focusing on the startup, tuning, and commissioning of the systems. Key technical duties include performing Site Acceptance Testing, aligning power system stabilizers, protectors, compensators, and limiters, and documenting unit response characteristics through on-line tuning. To be eligible for this engagement, the contractor must obtain CNS site access and hold Qualified Manufacturer's Representative status. This subcontract opportunity was posted on October 27, 2026, with a response deadline of January 14, 2027. The primary objective of the contract is the delivery of a fully commissioned and tuned DVR system.

Nebraska Public Power District

POSTED

about 11 hours ago

DEADLINE

RFQ: Susquehanna River Road Corridor Safety, Shared-Use Path and Quarry Park Access Improvements

Solicitation # BPM059336

The Town of Port Deposit, in coordination with WILMAPCO, is seeking a multidisciplinary planning and engineering consultant to implement an integrated safety and mobility project for the Susquehanna River Road corridor. The scope of work focuses on establishing a context-sensitive safety strategy using the Safe System Approach, determining safe multi-modal access to the planned Hopkins Quarry Park, and evaluating the feasibility and preliminary design of a shared-use path between Granite Avenue and Octoraro Park. The project aims to produce an actionable 30 percent design and basis-of-design package by June 30, 2027, with the potential for future progression to final Plans, Specifications, and Estimates. This is a qualifications-based selection process where the contract will be awarded to the most qualified firm based on equal weighting of their proposed team and key staff, project approach, and related experience in rural corridor safety and riverfront access. Compensation and detailed scope will be negotiated after the selection of the highest-ranked firm; therefore, no fee or price information should be included in the technical proposal. The project is initially funded by the Wilmington Area Planning Council and the Maryland Department of Transportation Kimberly Lamphier Bikeways Grant Program. Selected consultants must provide proof of financial capacity, a bid affidavit, and professional liability insurance of at least 1,000,000 dollars per occurrence, while adhering to federal civil rights and non-discrimination provisions.

Town of Port Deposit

POSTED

about 11 hours ago

DEADLINE

Traffic Engineering Analysis and Speed Limit RecommendationThis subcontract for Traffic Engineering Analysis and Speed Limit Recommendation involves performing technical analysis of speed data and collision history for prime contractors working on Town of Los Gatos Parks and Public Works projects. The scope of work includes calculating 85th-percentile speeds, reviewing three-year collision histories, and evaluating school zones to ensure compliance with the California Vehicle Code and California AB 382. The selected provider must deliver a Final Engineering Report along with GIS-compatible location data. To qualify for this engagement, the contractor must provide a California-licensed Professional Engineer specializing in traffic engineering. The solicitation was posted on October 27, 2026, with a response deadline of November 28, 2026. This project falls under NAICS code 541330 and is managed by the Parks and Public Works agency in California.

Parks and Public Works

POSTED

about 12 hours ago

DEADLINE

in about 1 month

Engineering and Traffic Surveys Supporting the Town's Speed Limits to Continue Radar Enforcement

Solicitation # 27-004

The Town of Los Gatos, through its Parks and Public Works agency, is soliciting proposals for solicitation number 27-004 to conduct engineering and traffic surveys across 65 designated roadway segments and all existing school zones. The primary objective is to renew the surveys supporting prima facie speed limits to ensure continued legal radar enforcement in compliance with the California Vehicle Code and AB 382. The selected consultant, who must be a California-licensed Professional Engineer qualified in traffic engineering, will perform speed data collection on 31 high-volume segments using radar and 34 low-volume segments using 24-hour mechanical counters. The scope also requires a review of three years of accident history, field checks of each segment, and the delivery of a final engineering report in searchable PDF format containing 85th-percentile speeds and a speed-limit recommendation matrix. The contract is for a one-year term beginning in January 2027 with no option for renewal. Proposers must submit electronic bids by November 27, 2026, and will be evaluated through a two-phase process consisting of a pass/fail responsiveness check followed by a 100-point scoring system based on qualifications, work plan, price, and references. Awardees must maintain significant insurance coverage, including 2 million dollars in general liability, 1 million dollars in automobile liability, and 1 million dollars in professional liability. The agreement includes strict non-discrimination requirements with potential liquidated damages of 100 dollars per day for non-compliance and allows for termination by either party with 15 days written notice. Payment is structured as monthly invoicing with net 30-day terms.

Parks and Public Works

POSTED

about 12 hours ago

DEADLINE

in about 1 month

Fire Alarm System Design and Engineering ServicesThis subcontract for Fire Alarm System Design and Engineering Services involves providing professional design engineering for fire alarm system replacements at California Military Department facilities in San Luis Obispo. The scope of work includes conducting field verification of room uses, dimensions, and network connections to develop comprehensive design plans and specifications specifically for Buildings 618, 738, 854, and 872. The project requires a highly qualified designer holding a NICET Level IV or V certification to ensure all deliverables meet professional standards. The primary objective is the delivery of approved design plans and specifications. Interested parties should note the response deadline of December 1, 2026, for this effort categorized under NAICS code 541330.

California Military Department

POSTED

about 12 hours ago

DEADLINE

in about 1 month

Outlet Structure Condition Assessment and Pre-DesignThis subcontract involves performing physical condition assessments of water infrastructure for prime contractors working on Sunshine Coast Regional District projects in Canada. The scope of work specifically focuses on evaluating the Harris Lake outlet structures and Haslam Creek flow paths to develop pre-designs for replacement structures, which will include the integration of concrete channels and automated valving. The selected provider must maintain P.Eng registration and ensure all work adheres to MMCD and CCDC standards. Key deliverables for the project include detailed condition reports, pre-design drawings, and Class D cost estimates. Responses for this opportunity are due by November 30, 2026.

Sunshine Coast Regional District

POSTED

about 12 hours ago

DEADLINE

in about 1 month

Water Supply Analysis and Capacity AssessmentThe Water Supply Analysis and Capacity Assessment is a subcontract for the Sunshine Coast Regional District in British Columbia. The selected provider will perform technical analysis of water storage and flow rates, specifically calculating total and live water storage for McNeil and Harris Lakes. Key responsibilities include developing elevation-storage relationships, performing Maximum Drawdown Level assessments, and reviewing licenses under the BC Water Sustainability Act. The successful contractor must be a registered Professional Engineer with EGBC. Deliverables for this project consist of detailed storage capacity calculations and comprehensive drawdown assessment reports. Interested parties must submit their responses by November 30, 2026.

Sunshine Coast Regional District

POSTED

about 12 hours ago

DEADLINE

in about 1 month

Water Supply Analysis and Engineering Services – South Pender

Solicitation # 2637021

The Sunshine Coast Regional District is soliciting proposals for water supply analysis and engineering services to conduct a capacity assessment and survey of the McNeil Lake and Harris Lake surface water reservoirs in British Columbia. The scope of work includes performing bathymetric, topographic, and site surveys, assessing the downstream flow path at Haslam Creek, and evaluating infrastructure conditions to optimize storage capacity and system resilience. Key deliverables include GIS-compatible model files, depth profiles, and assessments of total and live water storage capacity. The selected consultant must adhere to EGBC Bylaw 14(b), existing water licenses, and applicable MMCD or CCDC contract documents and the BC Builders Lien Act. Proposals must be submitted in English via BC Bid or email by November 30, 2026, and must remain irrevocable for 90 days. Awarding is based on meeting all mandatory criteria and achieving the highest overall ranking, with pricing evaluated using a formula where the lowest bid receives full points. The successful contractor is required to maintain minimum insurance coverage of 2 million dollars for commercial general liability, motor vehicle, error and omissions, and pollution liability. Payment terms are net 30 days following the receipt of approved invoices. The contract is governed by the laws of British Columbia, with unresolved disputes referred to Mediate BC services for arbitration.

Sunshine Coast Regional District

POSTED

about 12 hours ago

DEADLINE

in about 1 month

State Project No. 0108-0196

Solicitation # 49015

The Connecticut Department of Transportation is seeking technical proposals for State Project No. 0108-0196, which focuses on the Quinebaug River Trail located in the Town of Plainfield. This solicitation, identified by number 49015, falls under NAICS code 541330 for engineering services and is categorized as a SLED organization project to be performed within the state of Connecticut. Interested parties must submit their responses by the deadline of November 13, 2026, at 7:00 PM. The solicitation was officially posted on October 27, 2026, and further details regarding the submission process can be accessed through the Bid Express platform.

Connecticut Department of Transportation

POSTED

about 12 hours ago

DEADLINE

Lift Station Communication Improvement (FEMA)

Solicitation # 26-051UM-RFP

The City of Plant City is soliciting proposals under solicitation 26-051UM-RFP for a turnkey engineering design and implementation project to modernize the communication network for 55 wastewater lift stations. The project focuses on replacing or integrating Remote Terminal Unit (RTU) hardware and deploying a new cellular-based communication network to ensure seamless connectivity with the City's SCADA system. This initiative is partially funded by a FEMA grant via the Florida Division of Emergency Management, requiring all work to adhere to strict standards for system hardening, operational continuity, and disaster resilience. The project includes the delivery of pre-configured communication assemblies and requires installation by a licensed electrical contractor, with system startup performed by the supplier. The selection process utilizes a points-based evaluation focusing on the logical sequencing of the proposed project schedule, the credentials of the proposer, and a track record of at least three similar projects completed in Florida within the last ten years. Bidders must provide itemized pricing for site-specific materials and project-wide labor. Compliance requirements are extensive, including adherence to the Davis-Bacon Act, Equal Employment Opportunity regulations, the Americans with Disabilities Act, and specific FEMA sub-recipient agreement terms. Proposals are due by 2:00 pm local time on November 19, 2026, and must include a baseline project schedule, a human trafficking affidavit, and certifications regarding foreign country entities. Final acceptance of the work by the City is required before any applicable warranty periods commence.

Utilities Maintenance

POSTED

about 13 hours ago

DEADLINE

Seismic Safety ComplianceThis subcontract opportunity with the California Department of General Services focuses on achieving seismic safety compliance for lease projects. The selected provider will perform structural evaluations and analysis to install seismic reinforcements, specifically targeting ceilings, lighting, and wall reinforcements. All work must be executed using structural steel and anchors in strict accordance with the California Building Code and State seismic safety specifications. The project falls under NAICS code 541330 and requires the delivery of certified seismic safety compliance for the involved facilities. Interested parties should note the response deadline of November 12, 2026, for this specialized structural engineering and installation effort.

California Department of General Services

POSTED

about 14 hours ago

DEADLINE