OpsByFabian

FABIAN JANISZEWSKI

I build the digital systems behind serious businesses.

Websites that sell. Software that runs the work. Systems that keep improving.

Tell me what needs improvingSee the work

Based in Spain · Working globally · English / Spanish / Polish

5,300+
LinkedIn followers
5,000+
LinkedIn connections
3
working languages
4
product and proof builds
1
direct owner-builder

Self-reported figures, July 2026.

Most businesses do not need more software.They need the right system built around how the work actually happens.

What gets built

01

Websites & Conversion Systems

Premium websites and landing systems that explain the offer, earn trust, and turn attention into qualified action.

The current site looks weak, undersells the work, or does not convert.

A clear public home base that makes the next step obvious for the right visitor.

  • Custom business websites
  • Conversion-focused landing pages
  • Multilingual and SEO systems
  • Lead capture and analytics

Typical first phase: one focused landing page, or a conversion review of the current site.

02

Business Apps & Internal Software

Custom tools, portals, dashboards, and connected workflows that make the business easier to run.

Key work lives across Excel, WhatsApp, email, and one person's head.

One clear system instead of spreadsheets, chats, and memory.

  • Internal tools and dashboards
  • Client and B2B portals
  • Quoting and follow-up systems
  • API integrations and automation

Typical first phase: one internal tool for the single most painful workflow.

03

SaaS MVPs & Connected Platforms

Production-minded SaaS builds with authentication, payments, integrations, deployment, and a foundation that can grow.

The idea needs working software to validate, not another deck.

A real first product to test, demo, and sell, not a fragile prototype.

  • MVP scope and product design
  • Auth, roles, and payments
  • Deployment and monitoring
  • Iteration plan after launch

Typical first phase: the critical flow built end to end, deployed, in real hands.

Capabilities

The full stack, one pair of hands.

Every layer a serious system needs, handled by the same person who understood the business problem. No translation loss between strategy, design, and code.

Strategy & product

The right thing gets built, in the right order.

  • Process mapping and discovery
  • MVP and phase scoping
  • Conversion and funnel strategy
  • Pricing and offer structure

Design & frontend

Interfaces people actually use, fast everywhere.

  • UI/UX and design systems
  • Next.js and React
  • Multilingual architecture
  • Motion and interaction

Backend & data

Reliable logic and data you can trust.

  • APIs and integrations
  • Supabase, SQL, data modelling
  • Stripe and payment flows
  • Auth, roles, and permissions

Production & operations

Systems that stay up and keep improving.

  • Vercel and Railway deployment
  • Monitoring and QA discipline
  • Analytics and event tracking
  • AI-assisted development, human-owned

How it ships

One person owns the path from question to production.

Projects can begin small: a focused diagnostic, a landing or workflow improvement, a first internal tool, or a first MVP phase. When the problem is clear, an OpsBuild Sprint turns it into the first working version.

  1. Discover01

    Understand the business, the process, and the real problem.

    A clear picture of where value leaks.

  2. Define02

    Scope the smallest useful first phase.

    A decision: what gets built first and why.

  3. Design03

    Structure, flows, and interface around the real work.

    A design the team recognises as their own process.

  4. Build04

    Frontend, backend, data, integrations.

    Working software, not slideware.

  5. Deploy05

    Production setup, environments, QA, release.

    A system running where the business can use it.

  6. Improve06

    Monitor, fix, extend, and iterate with evidence.

    A system that keeps getting better after launch.

Selected work

Owned products, built end to end.

Every project carries its honest stage label. No invented results.

Owned product · Active build

FollowUpOS

A human-first follow-up platform built to stop leads, relationships, and opportunities from going cold.

  • Multilingual product
  • AI-assisted drafting
  • Chrome extension
  • Follow-up workflows
Owned product · Active build

DealSharp

A real-estate decision platform combining deal analysis, financial tools, and portfolio visibility.

  • Deal calculators
  • Dashboards and reporting
  • Financial logic
  • SaaS architecture
Pilot preparation

FarmaPanel

A pharmacy operations dashboard direction for inventory, expiries, margins, and controlled imports.

  • Operational dashboard
  • Read-only safety
  • Tenant isolation
  • Staged imports

Client systems in progress

Active engagements stay anonymous until the client approves publication.

Active paid build

Operations control tower

An e-commerce operations hub connecting orders, purchasing, and accounting for a Spanish retailer.

Proposal

B2B client portal

A wholesale portal direction for a Spanish supplier, scoped and awaiting decision.

The full studio

This page is the front door. The studio behind it is already working.

OpsByFabian runs live systems, interactive demos, and a deep resource library today. Explore the working studio.

Interactive demos

Working sample systems with labelled demo data: quoting, follow-up, operations.

Solutions

How specific business problems map to systems, from quotes to follow-up.

Free workflow leak audit

Find where the business loses time, leads, and money. The live first step.

How we start

The real engagement ladder: from diagnosis to build sprint to ongoing partner.

Resources

Practical workbooks and tools for operators, free.

Why Fabian

One person accountable from the first business question to the production release.

AI cinematic render
  • Direct communication, no handoff maze.
  • Business and financial operations background.
  • Strategy and implementation in the same head.
  • Delivery in English, Spanish, and Polish.
  • Production ownership: deploys, monitoring, fixes.
  • Transparent scope and decision logs.

Start a project with OpsByFabian.

Bring the messy workflow, the stalled product idea, or the website that is not doing enough.

Start a projectSee how we start