For small and medium aviation businesses
Work directly with François, a software engineer and flight dispatcher, to build reliable tools, connect systems and simplify day-to-day operations.
What BlockFit does
BlockFit works primarily with small and medium aviation businesses. Choose software and integrations, remote flight dispatch, or IT advisory and practical Part-IS support.
Good fit when
An aviation business needs a reliable application, internal tool, API, integration, automation or software evolution.
Typical output
Usable software, connected data, reduced repetitive work, testing and agreed maintenance.
View scope
Good fit when
A team needs remote help with dispatch planning, feasibility or operational coordination.
Typical output
Dispatch planning and coordination, feasibility, PPR, slots, handling follow-up or an operational study within the agreed scope.
View scope
Good fit when
Architecture, tools, data flows or practical Part-IS implementation need a clear direction.
Typical output
IT architecture advice, systems and data-flow mapping, tooling choices, or Part-IS implementation support—not audit or certification.
View scope
Specialist service
Practical AI Fluency remains available as a focused workshop for aviation teams, separate from the three core activities.
Who this is for
The priority clients are operators, flight departments, aviation suppliers and other small or medium businesses that need reliable software and an understanding of real operations.
Selected projects outside aviation remain possible when the same software, integration or regulated-workflow experience is useful.
You may need BlockFit when:
Where the friction usually shows up
The real friction is usually between people, processes, tools, evidence and regulation. BlockFit helps make that friction visible, then turns it into something structured and usable.
Data is entered twice
The same information moves between spreadsheets, forms, emails and systems without a clear source of truth.
Ownership is unclear
A process exists, but daily responsibilities, escalation paths and follow-up are not explicit enough.
Evidence is scattered
Documents, decisions, supplier checks and operational records exist, but are difficult to retrieve when needed.
Tools do not match the workflow
Software is introduced before the actual operational process is understood, creating more work instead of less.
Compliance stays too theoretical
Requirements are translated into documents, but not into practical routines, responsibilities and evidence.
Selected delivery evidence
The first two examples are anonymised professional experience completed in salaried roles, not BlockFit client work. Products are identified separately.
Professional experience · salaried role
François gathered requirements and delivered an integration layer between two enterprise aviation systems, including data mapping, validation, asynchronous processing, deployment and support.
Read the public case studyProfessional experience · salaried role
François contributed requirements, implementation, testing, maintenance and support for a multi-workflow aviation operations platform.
Read the public case studyBlockFit product
François leads product definition, development, technical review, testing and releases for this BlockFit product.
Read the public case studyWhy BlockFit
BlockFit is an independent, founder-led aviation operations and technology business.
François Versmissen combines software engineering with flight dispatch experience and stays directly involved from the first discussion through delivery.
Operational first
The starting point is always the real workflow: how the team works, where the handovers happen, what needs to be checked, and what creates friction.
Implementation capability
BlockFit can help define the process, build the tool, connect systems, structure evidence or support the implementation directly.
Regulation-aware
Compliance requirements are treated as design constraints, not as a separate paperwork exercise.
Independent and focused
François is the direct project contact and delivery lead. Responsibilities and any external dependencies are made explicit during scoping.
How we work
Each project starts with the real workflow and the result the team needs, followed by an agreed plan, implementation and practical documentation.
Understand the operation
François starts with the real workflow: people, tools, handovers, decisions, constraints and existing documentation.
Structure the process
Together, the project clarifies responsibilities, data flows, evidence, escalation points and what the team actually needs to maintain.
Define a practical scope
The scope is kept small enough to deliver, but complete enough to solve a real operational problem.
Build, connect or document
Depending on the need, BlockFit builds a focused tool, connects existing systems, improves the workflow or structures the compliance evidence.
Handover and keep it usable
The outcome should be understandable, maintainable and useful for the people who run the operation day to day.
Product gallery
Products published by BlockFit are shown separately from consulting and professional delivery evidence.
A public website or store listing confirms availability, not customer adoption, revenue or market traction.
Avivise is in early access; AZF/BZF Trainer is an independent aviation radio exam preparation app.
Flight dispatch career-orientation product in early access. François leads product definition, development, testing and releases.
Prepare for your German aviation radio exams with official questions from the Bundesnetzagentur. Practice for AZF, AZF-E, BZF I, BZF II, and BZF-E certifications.
Salary Calculator, Tasu and Volora are kept separate from the aviation examples. They show BlockFit’s broader product development work.
Calculate Estonian salaries with the latest 2026 tax rates. Get instant breakdowns of gross salary, net take-home pay, and total employer costs.
Add and subtract hours and minutes instantly. A minimal time calculator for freelancers, pilots, project managers, and anyone who works with durations.
Our own product — a privacy-first app that shows EV drivers what they actually save against the petrol or diesel car they'd otherwise drive. Honest, usage-based numbers, with driving data kept on the device.
Automation & AI
Automation can be useful, but only when the underlying process is clear.
BlockFit uses automation to reduce repetitive work, improve structure and make information easier to retrieve — applied to specific operational workflows, not as a blanket layer.
Where it helps
Reminders, status chasing and recurring checks that would otherwise eat operational time.
Moving data between tools so the same information isn't re-entered by hand.
Pulling the right records and figures together so they're easy to find and review.
Compliance judgement, operational responsibility and final decisions remain human.
BlockFit OÜ is François Versmissen’s founder-led company, founded in Estonia in December 2024. It focuses first on software and integrations for aviation businesses, complemented by remote flight dispatch and IT advisory with practical Part-IS support.
François is a software engineer and flight dispatcher with experience across aviation operations, OCC, EFB, data, software and systems integration.
You work directly with François on an agreed scope and timetable. His LinkedIn profile provides a discreet view of his wider professional background.
Hands-on operations experience combined with software engineering — from flight ops support to workflow digitalisation, built to fit how aviation teams actually work.
Aviation IT consulting, Part-IS support and integration — connecting tools and data workflows to simplify operations, not add complexity.
FAA-certified dispatcher with experience across EASA and FAA environments. You work directly with François from scope through delivery and handover.
Free guide
Part-IS is often where aviation teams realise that security, suppliers, evidence and operational ownership need to become more structured.
This guide helps you move from high-level requirements to practical questions: who owns what, what evidence is needed, where supplier risk is tracked, and how the work fits into day-to-day operations.
Written from an implementation perspective, not as a generic template.
Part-IS is one entry point. The broader work is practical aviation IT: workflows, systems, data, tooling and implementation.
Enter your email to access the guide.
Start with a specific operational problem, workflow or software responsibility that needs a practical owner.
Useful context includes the team involved, the process causing friction, the tools or systems in use, the desired outcome, known constraints and any operational or regulatory date that affects scope.
François reviews the fit and context, clarifies the scope, and proposes a practical next step when the project is appropriate for BlockFit.
Prefer email? Write directly to François at [email protected]
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