Build

Build what the evidence earns.

Proof Engine builds MVPs, V1 products, AI workflows, internal tools, and product systems with the product thesis and GTM path still attached.

We can build, but the build should serve a real decision: what to test, what to launch, what to sell, what to automate, or what to scale.

A spec is not always a strategy.

A spec is not always a strategy. If the user, workflow, market, or business case is unclear, shipping more code can increase risk instead of reducing it.

Proof Engine can build, but the build should serve a real decision: what to test, what to launch, what to sell, what to automate, or what to scale.

Build Principles

Scope is earned by evidence, customer need, workflow proof, or business priority.

MVP as instrument

The MVP is not the trophy. The signal is. A validation MVP should create evidence, not just prove that code can be shipped.

Workflow before platform

For AI, operations, marketplaces, and internal tools, the workflow should make sense before it becomes a larger platform.

Instrumentation from the start

Builds should include the signals needed to understand usage, activation, workflow acceptance, or GTM impact.

Scope tied to decision

Scope should be earned by evidence, customer need, workflow proof, or business priority.

Validation MVP Build

A product surface, prototype, AI demo, workflow, or lightweight MVP built specifically to generate evidence.

Best for: teams that need something concrete before demand testing, AI workflow ideas, marketplace or workflow-heavy products, and founders who need more than a deck but less than a full product.

Typical output: MVP scope tied to one proof question, a product flow or prototype, core feature implementation, an AI workflow or automation prototype where relevant, analytics or signal capture, and a validation handoff.

Open the full offer

V1 Product Build

A more durable product build after there is enough evidence, a validated wedge, or a clear internal or business need.

Best for: founders after validation, Seed-stage teams with early evidence, and mature teams with serious internal or customer-facing product needs.

Typical output: product scope and roadmap, frontend and backend implementation, integrations, AI or data workflow implementation where relevant, QA and testing, analytics and observability and launch support, and a technical handoff or continued support path.

Open the full offer

AI Workflow / Internal Product Build

An AI-enabled workflow, internal tool, automation, document or data extraction process, CRM automation, agent workflow, or operational product surface.

Best for: mature companies, operations teams, revenue teams, product and data teams, and companies under pressure to implement AI but unsure where it creates value.

Typical output: workflow mapping, user or operator research, an AI prototype or automation, integration with existing tools where feasible, human-in-the-loop review points, and measurement and governance notes.

Open the full offer

Product Engineering Support

Scoped senior engineering support across backend, frontend, integrations, cloud, QA, AI/data, or product engineering.

Best for: teams with validated direction, companies with a known technical workstream, and products that need senior execution but not a large agency.

Typical output: a scoped delivery plan, engineering execution, product judgment around scope, technical review and handoff, and optional GTM or analytics coordination.

Open the full offer

Dedicated Product Squad

A focused multi-role team across product, engineering, AI/data, QA, and sometimes GTM operations.

Best for: validated opportunities, longer-term product work, and companies that need capacity and product judgment.

Typical output: a dedicated delivery cadence, product and technical planning, frontend or backend or integrations or cloud or AI/data or QA capacity as needed, product analytics and feedback loops, and optional GTM or lifecycle coordination.

Open the full offer

Senior product engineering across modern stacks

Proof Engine's broader capability base includes backend, frontend, cloud, integrations, data systems, AI workflows, QA, observability, and infrastructure-heavy product work.

See the deeper capability map. Explore capabilities

When discovery is required

Most Build work starts with a short paid discovery phase so the team can define scope, architecture, risks, timeline, and the proof needed before execution. Validation MVP Build may only need a lighter version when the scope is focused. V1 Product Build, AI Workflow / Internal Product Build, Product Engineering Support, and Dedicated Product Squad should not start as blind build-to-spec work.

See how discovery works

Compare the full catalog: all offers.

FAQ

Frequently asked questions

A Validation MVP exists to generate signal, not to be durable. A V1 Product Build is the first durable product foundation once there is enough proof to justify it. A Dedicated Product Squad is ongoing multi-role capacity for longer work. Choose by how much has been proven and how long the work runs.

Proof Engine works across backend, frontend, cloud, integrations, data systems, AI workflows, QA, observability, and infrastructure-heavy product work. The stack is chosen during discovery against the product, the integrations required, and the team that will maintain it afterwards, rather than defaulting to one framework. Review the capability map.

Yes. Product Engineering Support and MVP Diagnostics & Repositioning both start from what already exists. Discovery reviews the codebase, architecture, and analytics first, because the useful question is usually whether the product logic holds, not only whether the code is clean.

Usually yes. V1 Product Build, AI Workflow, Product Engineering Support, and Dedicated Product Squad should not start as blind build-to-spec work, so each begins with a short paid discovery that defines scope, architecture, risks, and timeline. A focused Validation MVP Build may only need a lighter version. See how discovery works.

Both, when there is a real workflow behind them. AI Workflow / Internal Product Build covers workflow design, LLM-enabled internal tools, automation, agentic workflows, and human-in-the-loop review points. The work starts by mapping who uses the workflow and what improves, because a demo that works is not the same as an operation that adopts it.

Support can continue through Product Engineering Support for a scoped workstream, or a Dedicated Product Squad when the product needs ongoing multi-role capacity. Builds include analytics and observability from the start, so post-launch decisions rest on usage, activation, and workflow acceptance rather than opinion.

When the team wants a fixed spec shipped without questioning the product logic, or simply wants the cheapest available development capacity. A spec is not always a strategy: if the user, workflow, market, or business case is unclear, shipping more code increases risk instead of reducing it. Start with Validate in that case.

Yes. IP for paid work transfers to the client, and a V1 Product Build includes technical documentation and a handoff as standard deliverables, alongside a post-launch support recommendation. The aim is a product your own team or another vendor can maintain without us.

Contact

Bring us the decision you need to make.

Tell us where you are, what you are trying to prove, and what would make the next move worth it.

Kirill Artsymenia, Founder of Proof Engine

Founder, Proof Engine

Kirill Artsymenia

Reads every brief personally. Usually replies within 24h.

Opens your email app with the brief pre-filled.Book a routing call

Prefer a conversation first?

If you would rather talk it through before sending a brief, book a short routing call and we will point you to the right next step.