AI-First Software Engineering Company from Silicon Valley

Diffco is an AI-first software engineering partner for growth-oriented teams. We embed senior engineers and product strategists who turn AI vision into shipped, revenue-driving products.

Our team has spent the last two decades building the kind of software companies depend on: SaaS platforms, web products, mobile apps, and now AI-native systems for teams from Silicon Valley startups to top U.S. enterprises in healthcare, finance, and other regulated industries. We pair that engineering depth with sharp product thinking and a proprietary delivery model — Production-Ready AI Engineering — designed for the AI era.

By the numbers

18+
years building production software
1450
products shipped
500
satisfied clients
38+
AI products and agents built or in production in the last year
Top AI Development
Company
Top 10 Software
Developers
Top AI Developers
in California
Top Staff
Augmentation
Company
Top 50
AI Developers

Services we provide

AI/ML Engineering

Production-ready AI, ML, RAG, and computer vision — integrated into your stack. We build on OpenAI, Anthropic, Gemini, Llama, Mistral, DeepSeek, Qwen, and more, and turn your data into secure, measurable revenue gains — not pilots that gather dust.
LLM
ML
RAG
Computer Vision
MLOps
Illustration representing AI and machine learning engineering.

Agentic AI Engineering

Custom agents, copilots, and multi-agent systems that automate real work — sales, support, ops, research. Production-grade from day one, with guardrails, evals, and observability built in.
AI Agents
Copilots
Multi-Agent
LangGraph
Voice AI
Illustration of a central AI orchestrator linked to autonomous agents.

AI-Native Software Engineering

Full AI-native products — web, mobile, and SaaS — engineered end-to-end with AI baked into every layer. From conversational UIs to recommendation engines and agent-first workflows.
AI-Native
SaaS
Web
Mobile
Vibecode Rescue
Illustration of a web and mobile product with AI built into every layer.

AI-Driven Product Discovery

Validate scope, architecture, and ROI before committing to a full build. From hypothesis to a working PoC in 1–2 weeks, with use-case mapping, data audit, and a costed roadmap.
Use-case mapping
Architecture
Rapid PoC
1–2 weeks
Illustration of a product-discovery dashboard examined under a magnifier.

AI Staff Augmentation

We embed top 1% senior AI/ML, full-stack, and product engineers directly into your team who work AI-first by default. Our experts adopt your tools, stack, and culture — adding senior capacity without long hiring cycles.
Cultural fit
Top 1%
Instant hire
Illustration of a team collaborating around a task board, discussing ideas and working on laptops and tablets.

Web Development

Modern websites and web apps engineered by senior teams — fast, responsive, easy to manage. Integrate AI agents, copilots, or data when you need to; ship a great product even if you don’t.
Contentful
Magento
WordPress
Shopify
Sitecore
Web development illustration.

Mobile Development

Native and cross-platform iOS and Android apps engineered by senior teams. AI features (agents, copilots, voice, computer vision) when your roadmap calls for them — solid, fast, user-loved apps whether or not you need them.
Swift
React Native
Flutter
Kotlin
Java
Mobile development illustration.

Our values

Clear Communication
Clear Communication

We build relationships on integrity and trust. Direct access to the team, transparent reporting, no PM filter.

Product-Oriented Thinking
Product-Oriented Thinking

We think like product owners. We challenge assumptions, prioritize what moves the metric, and ship the thing — not the spec.

AI-First Engineering
AI-First Engineering

Every project runs on Production-Ready AI Engineering, with senior AI/ML expertise and a delivery model designed for the AI era.

Our clients were featured on

Our history

How we build

A delivery method built for the AI era, not retrofitted to it.

Seven named stages. Continuous iteration. AI runs alongside us in every conversation — surfacing blind spots, edge cases, and contradictions before they become rework — while senior engineers and Human QA own the decisions that move risk and ship the product. You always know who is driving, what you're approving, and what comes next.

  1. 01

    Discover

    Human + AI

    Workshops and stakeholder interviews with AI in the room. It cross-verifies inputs across calls, docs, and Slack threads — flagging blind spots, edge cases, and contradictions humans miss.

  2. 02

    Plan

    AI

    AI decomposes the work, picks architecture, models, and tools. Surfaces risks, costs, trade-offs — and conflicts between stated requirements — before they become bugs.

  3. 03

    Align

    Human

    You review and approve. Every decision is logged — an auditable trail before any code is written. No black box, no scope drift.

  4. 04

    Build

    AI

    AI agents execute the approved plan inside engineered guardrails. Senior engineers steer and unblock. Sprint cadence with working artifacts, not status decks.

  5. 05

    Validate

    Human + AI

    Three independent layers on every release candidate: automated evals, senior code review, and dedicated Human QA — manual and exploratory testing alongside security, performance, and accessibility checks.

  6. 06

    Release

    Human + AI

    Production deployment, UAT, knowledge transfer, runbooks. Cutover is documented, reversible, and on a schedule you approve. Your team takes the keys — or we operate it for you.

  7. 07

    Evolve

    Human + AI

    Launch is a milestone, not a finish line. Monitoring, feedback loops, and incremental improvements keep the system compounding — and feed the next discovery cycle.

Each release feeds the next discovery

Auditableplans, decisions, changes
Iterativealignment loop & sprint loop
Accountablesenior engineers and Human QA on every gate
Human-led AI-led Combined

Our executive team

Vadim Peskov
Vadim
CEO
Vadim Peskov
CEO & Co-founder
Vadim is a co-founder of Diffco and an advisor at Alchemist Accelerator and various startups. As an expert in AI-enhanced applications, computer vision, cybersecurity, startups, and product design, Vadim is a frequent speaker at industry events.
Eugene Nasonov
Eugene
CTO
Eugene Nasonov
CTO & Co-founder
Eugene is a co-founder of Diffco and an expert in computer science, software development, software architecture, and server infrastructure. With more than 15 years of experience, he has worked closely with both global enterprises and startups.
Paul Shpin
Paul
VP of Engineering
Paul Shpin
VP of Engineering
Paul brings 25 years of engineering and entrepreneurial leadership to Diffco. A systemic architect and founder behind Roadshow.ai, Consolidesk, and Targetflow, he builds resilient, scalable platforms that turn ambitious business goals into production-grade technology.
Marko
Marko
PMO
Marko
PMO
Marko, a highly skilled senior project manager, has a strong track record delivering projects across Med-Tech, e-commerce, IoT, telecom, and machine learning. Tech-savvy and adaptable, he excels at driving results in complex, fast-paced environments.
Margo
Margo
Head of People
Margo
Head of People
With 15+ years across global engineering teams, Margo leads people operations at Diffco — recruiting, onboarding, and growing the senior teams clients depend on. Her deep tech-industry network is how the bar at Diffco stays where it is.

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Let’s build something
great together

We believe in turning ideas into reality and we're ready to join your journey. Reach out to us and let's start discussing your project.

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