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Diffco US, Inc.

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Diffco50-99San Jose, United States

Diffco is a San Jose software engineering firm building AI agents, RAG systems and computer vision into client products. 31 Clutch reviews at 5.0, 27 on GoodFirms, 33 on DesignRush.

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About

Diffco is a San Jose software engineering firm that builds AI into client products: custom agents and copilots, RAG systems, computer vision, and full web and mobile delivery. Its agentic engineering page names LangChain, LangGraph, CrewAI and AutoGen, with models from OpenAI, Anthropic, Google and open weights. The strongest published case is an Arabic OCR model built for car-sharing service Shift, where Diffco reports 96% recognition accuracy. Recent AI work for Maze, VetLeo and RedTrack is summarized on the case index without its own page. Third-party reviews are dense: 31 on Clutch at 5.0, 27 on GoodFirms, 33 on DesignRush. The firm reports 500 clients and 1,450 products shipped since 2008.

What they sell

  • AI/ML Engineering

    Production-ready AI and ML solutions integrated into existing infrastructures.

  • Agentic AI Engineering

    Custom agents and multi-agent systems for automating various tasks.

  • AI-Native Software Engineering

    End-to-end software solutions with AI integrated at every level.

  • AI Staff Augmentation

    Top senior AI/ML engineers embedded directly into your teams.

Focus

Approach

Hybrid

Services

AI Agents

Stack

openaianthropicazure_openaiaws_bedrockgeminillamamistraldeepseekqwenlangchainlanggraphllamaindexcrewaiautogenawstensorflowpytorchopencvreactnodejsswiftkotlinflutterreact_native

Evidence on file

Independently verified, never paid placement

Case studies

9
Shift, Inc. (GoShift)
AI model for Arabic OCR and driver ID document recognition, 96% recognition success rate on the initial model; OpenCV, Dlib, Firebase ML, TensorFlow, PyTorch
Nift AI
AI tutoring product built on OpenAI with a fine-tuned model, in-site workspace, tone control and an admin panel for AI settings. No outcome numbers published.
Gitcha
Version 2 launch as embedded team: legacy refactor, AWS infrastructure upgrade, CI/CD. Outcomes stated qualitatively (smoother deployments, improved uptime), no numbers.
Good2Go
Core platform development, performance and load testing for keyless access control. No metrics published.
FlashGrid
Enterprise SaaS website. Client independently ranked 73rd in the Financial Times America's Fastest Growing Companies 2023 list.
Mi3 Security
Mobile app security work. Client was subsequently acquired by Zimperium.
WYA Group, Inc.
Social media iOS app. Co-founder Mason Menin quoted by name.
Food Rocket
Android app for 15 minute grocery delivery. Client raised a $25M Series A led by Alimentation Couche-Tard.
ShareFront
ERP for real estate. No metrics published.

Third-party reviews

4

Clutch

31 reviews

5.0

GoodFirms

27 reviews

5.0

DesignRush

33 reviews

5.0

Google (syndicated onto DesignRush)

23 reviews

5.0

Certifications & partner status

2
PCI DSS (self-reported)Optimizely partner (self-reported)

Directory cross-listings

6
https://clutch.co/profile/diffco-aihttps://www.goodfirms.co/company/diffco-us-inchttps://www.designrush.com/agency/profile/diffcohttps://selectedfirms.co/agency/diffco-us-inchttps://www.crunchbase.com/organization/diffco-us-inchttps://www.bizprofile.net/ca/san-jose/diffco-us-inc

Public footprint

2
  • blogActive technical blog, roughly weekly through June 2026. Recent posts cover MLOps for LLM products, self-hosted versus API models, agentic workflows in fintech, and taking Lovable or Bolt prototypes to production.
  • podcast appearancesCEO Vadim Peskov appears on at least six named third-party podcasts between 2023 and 2026

In their words

Provider-supplied, shown as given
Diffco turned our concept into a polished product from scratch, delivering on a tight timeline. Clear communication, organized project management, and a strong mix of creativity and technical expertise produced an app that exceeded our vision.

Don Markland

CEO at Accountability Now

Source
Their commitment to excellence ensures our platform remains robust and adaptable to our evolving needs. With their expertise, we've successfully enhanced our offerings, making our collaboration highly effective.

Mason Menin

Co-founder at WYA Group, Inc.

Source
We were impressed by Diffco's approach to the development process and how they engineer new solutions. They look ahead, learn about your product and strategy, and develop sophisticated, highly functional solutions.

Pete Gualfetti

Head of Design and Integration at Good2Go

Source

Who you’d work with

  • Vadim Peskov

    CEO and co-founder

  • Eugene Nasonov

    CTO and co-founder

  • Paul Shpin

    VP of Engineering

  • Marko

    PMO (surname not published)

  • Margo

    Head of People (surname not published)