Since
1985
A Trusted Federal IT Partner Sustaining Mission-Critical Systems with Years of Proven Excellence
Since 1985, Scientific Systems & Software International Corporation (SSSi) has supported federal agencies with mission-critical IT systems that demand reliability, security, and accountability. Today, we apply that same delivery discipline to modern technologies — including automation and AI — applied responsibly in regulated federal environments.
Who We
Are
Federal IT Services for Essential Government Programs
SSSi is a federal IT services company with over four decades of experience delivering, operating, and modernizing systems that support essential government programs.
We specialize in long-running, mission-critical environments where reliability, security, and continuity are paramount. Our teams design, develop, operate, and evolve systems that underpin benefits administration, workforce programs, regulatory oversight, and data-driven government operations — all within highly regulated federal environments.
Across decades of performance, SSSi has supported agencies through system modernization, policy change, and technology transitions without disrupting critical services.
Our Vision
Disciplined Innovation. Trusted Delivery.
"Modernization should strengthen mission continuity, not disrupt it. SSSi applies intelligence, automation, and modern technology responsibly — guided by experience, governance, and real-world operational demands."
Our History &
Continuity
Proven Mission Success
From the earliest days of federal digitization to the era of AI, SSSi has been a constant partner in federal mission delivery — supporting agencies through decades of technological and policy change.
1985
Foundation & Federal Focus
Established with a core mission to support federal agencies with secure, reliable software engineering.
2000s
The Digital Transformation
Pioneered secure, web-based case management systems for the SSA and DOL, transitioning paper-based processes to mission-critical digital workflows.
2015
Cloud & Cybersecurity
Led major migrations to secure cloud environments, achieving SSSi serves its customers at CMMI level III standards and establishing rigorous cyber standards.
Today
AI Assurance & Modernization
Delivering human-in-the-loop AI agents and intelligent document processing to scale federal workforce capabilities.
“Technology evolves. Accountability does
not.”
What We Do
Today
Modernizing Federal IT
Combining deep domain expertise with proven modern technical capabilities to solve complex mission challenges.
Innovation Without Disruption
Government systems require more than innovation — they require trust. Our approach enables agencies to adopt new capabilities while protecting mission continuity, security, and accountability.
- Human-in-the-loop system design
- Explainable and auditable functionality
- Security-first architectures
- Incremental modernization (no “big bang” changes)
Leadership
Guided by Vision & Experience
Leadership with decades of federal mission accountability.
Nayab Siddiqui
President
Founded SSSi to meet the critical IT needs of Federal Government agencies. With a focus on strategic leadership and operational oversight, Nayab has managed high-profile programs for the SSA (ITSSC-1, ITSSC-2), DOL, and HHS.
BS
& MS Mech. Eng.
Dartmouth
MBEP
PMP
PMI-RMP
Dr. Akhtar Siddiqui
Vice President
Oversees operations and contract management with a unique blend of healthcare expertise and business administration. Ensures efficiency, compliance, and top-notch client satisfaction across all federal engagements.
MD
& MBA
PMP
Risk
Management Professional
Certifications & Governance
SSSi maintains rigorous standards to support federal programs, ensuring every delivery is compliant, risk-managed, auditable, and high-quality.
Quality
SSSi serves its customers at CMMI level III standards
Development & Services
PMP
Project Management Pros
PMP® Certified Management
RMP
Risk Management Professional
PMI-RMP® Certified Assessments
Governance & Compliance
Agile & DevSecOps
FISMA & NIST
Quality Assurance
Human-Centered Design
Supporting the Next Era of Federal Technology
As agencies modernize, SSSi remains focused on applying new capabilities responsibly — strengthening systems without increasing risk.
“We are not redefining government IT.
We are helping it evolve — carefully, securely,
and sustainably.”
Partner with a Team You Can Trust
Whether you’re sustaining a critical system or modernizing for the future, SSSi is ready to support your mission with experience, stability, and care.