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Diffco

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AI-first software engineering partner for growth-stage and enterprise teams

San Jose, California51-200 employees2008
Established
Hire

About Diffco

Diffco is a San Jose-based company specializing in AI, custom software development, and staffing services. With more than 17 years of expertise in creating dependable solutions for mobile, web, and AI applications, it is committed to driving and supporting the growth of your business.

Products we developed are used by renowned companies such as American Express, Starbucks, Whole Foods, Mars, and many successful startups like Maze, Happier, and Legion Farm, among many others.

Why Diffco?

For your project development:

-Client-driven approach and clear communication

-Transparent processes and billing

-Detailed reporting and deliverables

-Dedicated project team with no cross-project sharing

For your team augmentation:

-Transparent pricing with no hidden fees

-Vetting and verification of team member expertise

-Fast and straightforward hiring for both long and short-term projects

-A dedicated account manager to facilitate interactions with both candidates and hired personnel

Services

Service Categories

CybersecurityMobile App Development

Industries Served(15)

Financial Services
Payments & Processing
Healthcare & Life Sciences
Digital Health & HealthTechMedical DevicesVeterinary & Animal Health

Team

VP

Vadim Peskov

CEO

EN

Eugene Nasonov

CTO and Co-Founder

Tech Stack

% of projects using each technology

Frontend Framework

  • React20%
  • Next.js15%
  • Angular5%

Backend Framework

  • Express.js25%

Mobile Platform

  • React Native20%
  • iOS / Swift15%
  • Android / Kotlin5%
  • Flutter5%

Programming Language

  • JavaScript20%
  • Python20%
  • TypeScript15%
  • Java10%
  • Go5%
  • PHP5%

Cloud Platform

  • AWS45%
  • Google Cloud25%
  • Microsoft Azure20%

AI / ML

  • OpenAI40%
  • Anthropic Claude30%
  • Hugging Face10%

Projects

Reviews & testimonials

About reviews & testimonials50Pros profiles are storefronts for agencies. Agencies may share client testimonials from past projects or their own websites, with permission. These testimonials were not necessarily submitted directly to 50Pros and are not independently verified by 50Pros.We distinguish reviews submitted directly to 50Pros from agency-provided and imported testimonials. Only eligible reviews submitted directly by clients contribute to the overall rating.

Client testimonials provided by the agency. Not independently verified by 50Pros.

Pete Gualtetti - Good2Go Inc
Mar 2026

Diffco provided ongoing custom software development and feature integration using a modern tech stack. They consistently met deadlines and responded quickly to our evolving needs. Their project management was proactive, with regular updates, detailed reporting, and creative input that added value beyond execution.

Custom Software Development

Anonymous - OVA Solutions
Mar 2026

Diffco delivered a reliable mobile application and backend system for our medical device use case. The app performed well and received positive feedback from stakeholders. The team met deadlines, stayed within budget, and maintained consistent communication across meetings and messaging platforms. Their leadership and structured approach stood out.

Mobile App Development

Sophia Aryan - Simiotics
Mar 2026

Diffco handled complex data integrations for our MLOps platform, enabling the successful launch of our alpha version. The project required integrating multiple AI APIs and system components. They maintained a transparent process with consistent communication and structured project management. Their feedback helped strengthen our overall product development strategy.

Custom Software Development

Igor Gubernsky - Fredd Inc.
Mar 2026

Diffco developed our AI-powered mobile app and successfully delivered the MVP on schedule. The product received strong feedback from users after launch. Their team maintained an organized workflow with regular meetings and clear communication. They were proactive in suggesting solutions and contributing ideas throughout the project.

Mobile App Development