What Flock does

Flock (legal name "Flock.") is a privately-held software engineering consulting community founded in 2016 and headquartered in Utrecht, Netherlands. The firm operates as a collective of approximately 17 named senior software engineers who are embedded into client teams on complex, mission-critical technology projects across the Benelux, with a footprint spanning the Netherlands and Belgium. Client engagements are primarily multi-year and target enterprise organizations, with marquee accounts including bol.com, ING, Picnic, DHL, NS International, Malmberg, Defensie, Port of Rotterdam, and Hubble Fleet Management. Work typically covers monolith-to-microservices migrations, design system modernization, AI/automation implementation, and architecture advisory on JVM (Java/Kotlin/Spring Boot), front-end (React/TypeScript/Angular/Vue/LitElement), and functional (Scala/ZIO) stacks.

Flock's business model is professional services: it sells billable consultant hours through quote-based, multi-year engagements with negotiated daily or hourly rates. Pricing is not publicly disclosed. The firm supplements service delivery with a community-led go-to-market approach built around bi-weekly internal Hack Days (Flock. Days), twice-yearly Community Days, and an annual Hack Week — events that double as recruiting, knowledge-sharing, and client/partner engagement vehicles. Content distribution channels include LinkedIn, Medium-hosted technical blogs, YouTube/Flock.tv for event recordings, and detailed public case studies on the website.

Beyond consulting, Flock has developed two proprietary technologies out of its internal Hack Days. Wirespec (launched 2021) is a contract specification language that generates type-safe API code across multiple programming languages, positioning itself as a more concise alternative to OpenAPI. Aigentic (launched 2024) is a model-agnostic AI automation platform for reading, interpreting, tagging, and following up on emails and filling structured forms, built on top of third-party foundation models with safeguards and monitoring. Both tools are currently positioned as client-engagement differentiators and internal innovations rather than commercialized standalone products. The company is founder-led by Maureen van der Sluis and Willem Veelenturf, operates without disclosed external funding, and has no disclosed revenue.

Name

Flock

Legal name

Flock.

Website

https://flock.community

Company type

Private

Founded year

2016

Operating status

Operating

Headcount range

11–50 employees

Short description

Flock is a Utrecht-based community of senior software engineering consultants providing multi-year embedded services to Dutch and Belgian enterprises (bol.com, ING, Picnic, DHL, NS International) across modernization, microservices, and AI integration workstreams.

Ownership category

akta.pro rank

Product category

Software Engineering Consulting

NAICS

Management Consulting Services (54161), Computer Systems Design and Related Services (54151)

SIC

Services-Management Consulting Services (8742), Services-Computer Programming Services (7371)

akta.pro primary industry

IT & Software Engineering Staffing (BPACADAA)

akta.pro secondary industries

Operations & Process Improvement Consulting (BPAHACAB), Organization Design & Operating Model Consulting (BPAHAGAB)

Keywords

• Software engineering consulting
• Custom software development
• API contract specification
• AI workflow automation
• Technical advisory services

Headquarters

HQ city

Utrecht

HQ country

Netherlands

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales, Technology or R&D

Revenue model

1. Software Engineering Consulting Services: Flock provides experienced software engineering consultants who work directly with client teams on complex technology projects. Consultants are placed at client sites for periods ranging from specific project sprints to multi-year engagements. Revenue is generated through billable consultant hours at negotiated rates. The firm positions itself as a premium consulting partner, with consultants who are also experienced engineers with strong communication skills.

Pricing tiers

Go-to-market motion2 records

Distribution channels1 record

Marketing channels5 records

Core offering

Flock is a community of senior software engineering consultants that delivers strategy, architecture, and implementation services to enterprise clients in the Netherlands and Belgium. Consultants are embedded with client teams on multi-year projects across e-commerce, banking, logistics, rail, fleet management, and government, working in modern stacks including Java/Kotlin, React/TypeScript, Angular, Vue, LitElement, and Scala/ZIO. The firm also develops proprietary internal tools such as Wirespec (a multi-language contract specification language) and Aigentic (a model-agnostic AI email and form automation platform) that originated from its Hack Day practice.

Product overview

Flock is a community of software engineering consultants offering professional services rather than a unified software product. The company provides consulting services across strategy, architecture, and implementation for clients. The main 'products' are services: innovative project delivery, knowledge sharing events (Flock. Days, Community Days, Hack Weeks), and internal innovations that have emerged from their hack culture, notably Aigentic (an AI automation platform) and Wirespec (a contract specification language for multi-language SDK generation). Supporting these are content platforms including Flock.tv (video content) and the Flock Blog.

Differentiator

Problem solved

Functional benefit

Brands

• Aigentic: An AI tool developed by Flock. engineers that can read, interpret, tag, and follow up on emails, identify relevant chunks of information, and fill it in specified forms. A model-agnostic platform built on top of existing AI tools.
• Wirespec

Products and services

• Software Engineering Consulting Services Senior software engineering consultants are embedded with Dutch enterprise clients on complex, multi-year projects covering strategy, architecture, and implementation across Java/Kotlin (Spring Boot), React/TypeScript, Angular, Vue, LitElement Web Components, and Scala/ZIO stacks. Engagements include monolith-to-microservices migration, PSD2 compliance, design system modernization, AI/automation implementation, and bespoke application development.
• Wirespec A contract specification language that describes how data is organized and moved within software systems, generating type-safe code across multiple programming languages to replace traditional OpenAPI specifications with a simpler, more concise alternative.
• Aigentic An AI-powered, model-agnostic automation platform built on top of ChatGPT, Gemini, and Llama 3 that reads and interprets emails, tags and follows up on messages, identifies relevant information chunks, and automatically fills specified forms, with safeguards against hallucinations and monitoring tools for cost, success, and failure rates.

Quantifiable outcome

• 90% automation rate achieved in bol.com design system migration using Code Mod tool
• +1 more outcomes

Named customers10 records

Segments2 records

Ideal customer profiles2 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

AI capability4 records

Feature2 records

Partnerships

Four partnerships are on record, tiered minor.

• adessominorOthersTechnology consulting partner listed in the partners section of Flock's website network page. adesso is a European IT services provider.
• Open-StaffingminorChannel Partner/ Reseller/ DistributorStaffing partner listed in the partners section, likely involved in consultant recruitment and placement.
• Open ValueminorChannel Partner/ Reseller/ DistributorPartner listed in the partners section, appears to be involved in consultant placement services.
• The ExpertsminorChannel Partner/ Reseller/ DistributorPartner listed in the partners section, appears to be involved in consultant placement services.

Scale indicators5 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Xebia: Dutch-headquartered IT consultancy with deep software engineering, agile, and cloud practices serving enterprise clients across Europe and beyond. Highly comparable business model: senior engineers embedded with clients, premium positioning, multi-year engagements in similar verticals.
• Trifork: European software engineering consultancy with strong Netherlands and Nordics presence, focused on digital transformation, custom software, and emerging-tech (including AI) delivery for enterprise clients. Comparable on engineering-led consulting model and geographic footprint.
• Kabisa: Dutch software engineering boutique focused on custom software delivery for enterprise and mid-market clients. Comparable on boutique size, Netherlands focus, and engineering-first culture.
• ThoughtWorks: Global technology consultancy renowned for senior-engineer-led delivery, strong engineering culture, and modernization/microservices work. Comparable on the 'passionate technologists partnering with clients' value proposition, though at much larger scale.
• Codestar: Dutch software engineering consultancy placing senior engineers into client teams for custom development and modernization. Comparable on staff-augmentation-with-engineering-excellence model in the Dutch market.
• Luminis: Netherlands-based technology consultancy delivering custom software, cloud, and data engineering to enterprise clients. Comparable on senior-engineer-led delivery model and Dutch enterprise client base.
• Info Support: Large Dutch IT services provider with strong software engineering, data, and managed services practices. Comparable on Netherlands-centric enterprise software engineering services, though at considerably larger scale.
• Schuberg Philis: Dutch mission-critical software engineering firm placing senior engineers inside client teams. Closely comparable on geography, premium boutique positioning, and 'co-pilot rather than vendor' philosophy.

Broad incumbents

• Deloitte Digital / Deloitte Engineering: Global professional services firm's digital and engineering practice, frequently competing for large Dutch enterprise transformation mandates. Comparable customer profile and engagement types, but embedded in a much larger advisory portfolio.
• Capgemini Engineering: Global systems engineering and digital transformation arm of Capgemini, competing for the same enterprise modernization and digital engineering budgets. Overlaps with Flock's value proposition but at vastly greater scale and as part of a broader portfolio.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat3 records

Key risks6 records

Key highlights6 records

Customer concentration

• YouTubeyoutube.com/channel/UCDYeplQF72BqZuPLD57o-3Q
• LinkedInlinkedin.com/company/flockcommunity

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Flock