What Zilverline does

Zilverline is a privately held Amsterdam-based software development company founded in 2009 that delivers custom Agile/Scrum-built software, predominantly for financial institutions and fintechs. The firm operates as a boutique consultancy providing fully integrated Scrum teams handling projects "from idea to launch," with core service lines spanning custom web and mobile applications, Open Banking/PSD2 integration, B2B e-commerce platforms, quotation tools, and IoT application development. Its technology stack is centered on Ruby on Rails, Sinatra, JavaScript/React/Redux, React Native, and AWS (Terraform, Ansible, Docker), with the proprietary Sequent framework — an open-source CQRS and Event Sourcing toolkit for Ruby with 550+ GitHub stars — used as the architectural backbone for engagements such as Jortt.

Zilverline monetizes primarily through professional-services engagements (custom development, multi-year contracts) and certified in-company Agile/Scrum training; it also derives product revenue from wholly-owned subsidiaries Thinka (an Apple HomeKit-certified smart home bridge for KNX and Z-Wave, also certified by Google Home and Amazon Alexa) and Jortt, the latter having grown into a separate entity of which Zilverline is the sole software supplier and which now serves 40,000+ customers under its own PSD2 license from De Nederlandsche Bank. Other sub-brands include POLS (a research-platform SaaS) and Sequent, while key enterprise customers span Albert Heijn, Achmea, Port of Rotterdam, SURFnet (1.5M+ users), RIPE NCC, Reisbalans, and Waternet.

Go-to-market is anchored on direct enterprise sales supplemented by content (blog, case studies), webinars co-hosted with partners (Yolt Technology Services, Studio Mango, AWS), and developer/community engagement via GitHub. The company achieved AWS Select Tier Consulting Partner status in 2020, distributes Thinka through online channels and smart-home platform integrations, and shifted its training business exclusively to in-company delivery in 2019. Headcount is in the 11-50 range with a partner-led organizational structure.

Name

Zilverline

Legal name

Zilverline

Website

https://zilverline.com

Company type

Private

Founded year

2009

Operating status

Operating

Headcount range

11–50 employees

Short description

Zilverline is an Amsterdam-based, privately held custom software development firm that builds Agile/Scrum-delivered web, mobile, Open Banking/PSD2, IoT, and B2B e-commerce solutions for financial institutions, fintechs, and government clients, and operates the Thinka smart-home bridge sub-brand and maintains the Sequent open-source framework.

Ownership category

akta.pro rank

Product category

Custom Software Development

NAICS

Custom Computer Programming Services (541511), Software Publishers (5132)

SIC

Services-Computer Programming Services (7371), Services-Computer Programming, Data Processing, Etc. (7370)

akta.pro primary industry

Custom Application Development (Web/Mobile/Desktop) (BPAEAFAA)

akta.pro secondary industry

Customer Experience & Engagement (CRM, Support, Rewards, Loyalty) (FSAGAAAM)

Keywords

• Custom software development
• Open banking PSD2 solutions
• Agile scrum training
• B2B e-commerce platforms
• Fintech software services

Headquarters

HQ city

Amsterdam

HQ country

Netherlands

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Software

Cost components

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

Revenue model

1. Custom Software Development Services: Zilverline provides fully integrated Scrum teams that handle software development from idea to launch for financial institutions and fintechs. They develop custom web applications, mobile apps, APIs, and IoT solutions. Revenue is generated through professional services engagements, typically scoped projects with dedicated teams. This is their primary revenue stream.
2. Agile and Scrum Training & Coaching: Zilverline offers in-company Agile transformation, team training, and Scrum Master/Product Owner coaching. They also assist with OKRs implementation. After 15 years of public training, they shifted to in-company only. Training sessions are rated 9/10 and have trained thousands of people.
3. Own Products (Thinka, Jortt): Zilverline has developed their own products through their Friday Playground initiative. Thinka is a smart home bridge (IoT hardware/software product). Jortt is an accounting software product that has grown into a separate company. These products generate revenue independently.

Pricing tiers

Go-to-market motion3 records

Distribution channels4 records

Marketing channels8 records

Core offering

Zilverline provides custom software development through fully integrated Agile/Scrum teams for financial institutions, fintechs, and other enterprises, delivering web apps, mobile apps, APIs, IoT integrations, and B2B e-commerce platforms. Their flagship offering is end-to-end PSD2/Open Banking software that exposes bank data via modern APIs, complemented by proprietary products (Thinka smart home bridge, Jortt accounting software) and certified Scrum training and coaching.

Product overview

Zilverline is a software development company offering both services and proprietary products. Their core services include custom software development for financial institutions and fintechs using Agile/Scrum methodology, Open Banking & PSD2 solutions, B2B e-commerce platforms, quotation tools, and mobile/IoT development. Their product portfolio consists of Thinka (smart home automation controller), Jortt (digital accounting platform), Sequent (CQRS & Event Sourcing Ruby framework), and POLS (research experiment platform). The company also provides certified Agile/Scrum training and OKR coaching services.

Differentiator

Problem solved

Functional benefit

Brands

• Thinka: Apple HomeKit certified smart home controller for KNX and Z-Wave home automation systems
• Jortt
• Sequent
• POLS

Products and services

• Custom Software Development Services Custom software development delivered through fully integrated Scrum teams that build web applications, integrations, and mobile apps for financial institutions, fintechs, and other enterprises.
• Open Banking & PSD2 Solutions PSD2-compliant software solutions and a JSON REST API service that exposes MT940 and CAMT.053 bank data for account information services (AIS) and payment initiation services (PIS).
• B2B E-Commerce Platform Wholesale e-commerce platform featuring VAT transfer, volume discounts, inventory management, reservations, and global shipping integrations with carriers such as UPS, DHL, and PostNL.
• Quotation Tool Custom quotation system that enables rapid creation and modification of professional quotes with complex calculations, illustrations, version control, and permissions, initially developed for Gibas.
• Agile & Scrum Training and Coaching Certified Scrum Master and Product Owner training plus agile transformation coaching and OKR implementation, delivered as in-company engagements to enterprise and mid-market clients.
• Thinka Smart Home Bridge Apple HomeKit-certified smart home bridge that connects KNX and Z-Wave home automation systems to Apple Home, Amazon Alexa, and Google Home; first Apple HomeKit-certified Z-Wave controller.
• Jortt Accounting Platform Digital accounting platform for entrepreneurs, featuring automatic bank transaction import via PSD2/Open Banking, simplified bookkeeping, and automated direct debit processing. Jortt has spun off to become an independent company with Zilverline as sole software supplier.
• Sequent CQRS & Event Sourcing Framework Open-source Ruby framework for building CQRS and Event Sourcing applications, with 550+ GitHub stars and used in production systems such as Jortt.
• POLS (Platform for Online Studies) Research platform that enables researchers to easily set up experiments, manage participants, and collect data in compliance with GDPR.

Quantifiable outcome

• Zilverline developed Jortt accounting software with 40,000+ users, with transactions directly linked to bank accounts via PSD2/Open Banking
• +4 more outcomes

Named customers17 records

Segments5 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

Yes

API docs

API detail

Core technology

AI maturity

App detail

Integration20 records

Feature4 records

Partnerships

Three partnerships are on record, tiered minor and core.

• Studio MangominorStrategic or Co-development Partner · 1 January 2021Studio Mango is an industrial design bureau that co-hosted an IoT webinar with Zilverline on smart home product development. Together they developed Thinka, Zilverline's smart home bridge product.
• Amazon Web Services (AWS)coreTechnology or Integration · 1 January 2020Zilverline is a Registered Consulting Partner of AWS, achieving Select Tier status at the beginning of 2020. They have been developing software applications using AWS technology for several years, including projects with Thinka and Jortt. AWS enables them to deliver functionality quickly, scale applications easily, and operate cost-effectively.
• Yolt Technology Services (YTS)coreTechnology or IntegrationYolt Technology Services provides the open banking API that Zilverline integrated for Jortt's accounting platform. Zilverline chose YTS because of its excellent API documentation, sandbox environment, and ease of onboarding. The partnership enables Jortt to access bank transaction data via PSD2. Zilverline and YTS co-hosted webinars on PSD2 for wealth managers.

Scale indicators8 records

Recent moves8 records

Expansion highlights5 records

Direct peers

• Xebia: Dutch-headquartered Agile software consultancy offering custom development, cloud, and DevOps services across enterprise clients. Highly comparable in size, Agile heritage, and Dutch-market focus, and a direct competitor for Zilverline's core FinTech and enterprise delivery engagements.
• Craftsmen: Amsterdam-based software development consultancy focused on custom application development using modern stacks for enterprise clients. Direct competitor for Zilverline's custom development engagements with overlapping technology choices and Dutch client base.
• Info Support: Dutch software development and consultancy firm offering custom application development, data, and cloud services. Comparable in custom software delivery model and Dutch market presence, with broader scale and vertical coverage.
• Kabisa: Netherlands-based software consultancy focused on custom application development for healthcare, finance, and public sector. Comparable boutique scale, Agile delivery model, and FinTech/regulated-industry focus.
• iO (formerly Intracto): Benelux digital agency offering custom software, e-commerce, and marketing technology services. Comparable on the B2B e-commerce and custom application development offerings, with broader marketing-technology capabilities.

Broad incumbents

• Sogeti: Global IT services firm with a strong Netherlands presence offering custom development, testing, and cloud services. Comparable in Dutch FinTech and enterprise delivery but operates at significantly larger scale and broader portfolio; Zilverline's former sales lead joined from Sogeti.
• Thoughtworks: Global technology consultancy known for Agile delivery, custom software, and FinTech modernization. Comparable in Agile heritage and FinTech delivery focus, but operates at much larger scale across multiple geographies.
• Capgemini Engineering: Global engineering and digital services firm with deep presence in Dutch financial services. Comparable in FinTech custom delivery but operates at vastly larger scale, competing for the same enterprise transformation RFPs.

Others

• Mollie: Dutch payment service provider and existing Zilverline partner/integrator through Jortt. Comparable as a Dutch fintech scale-up, but operates as a payments platform rather than a custom software developer — an adjacent ecosystem player.
• Yolt Technology Services: Open banking API provider and Zilverline partner integrated into Jortt. Comparable as a PSD2/Open Banking platform, but operates upstream as an API/data provider rather than as a custom development services firm.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights6 records

Customer concentration

• Xx.com/zilverline
• GitHubgithub.com/zilverline
• Facebookfacebook.com/zilverline
• LinkedInlinkedin.com/company/600373

Revenue estimate

Valuation estimate

Number of profiles

Profiles5 records

Subsidiaries1 record

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 Zilverline