Vojtěch Kaláb

Profile

Software consultant with 15+ years of experience building large-scale web applications for enterprise clients including Škoda Auto and Komerční banka. Specialising in React/Next.js and Angular with TypeScript, I combine deep technical expertise with a product mindset — shaping requirements upstream, leading frontend teams, and delivering clean, maintainable architecture from day one.

Experience

Senior Software Consultant Freelance

Jan 2012 – Present

Independent consultant delivering frontend/fullstack solutions across enterprise, banking, and media sectors. Selected engagements:

Led end-to-end development of an internal CMS — from requirements analysis and architecture design to full implementation. Enabled non-technical teams to manage content without developer involvement.

Next.js · React · TypeScript · Zustand · SWR · Cypress · MUI (Škoda Flow)

Independently delivered features on a complex planning system while providing consultancy to analysts and conducting feasibility analysis of client requirements.

Angular · RxJS · TypeScript · DevExtreme

Extended and migrated two banking applications to the bank's unified design system (Golem). Collaborated with a cross-functional team to deliver both projects on schedule.

Angular · RxJS · TypeScript · PrimeNG (Golem)

Built a real-time shipment tracking tool, integrating WebSockets to eliminate HTTP timeout issues for long-running tracking queries.

Angular · RxJS · TypeScript

Developed custom plugins for Power BI, Qlik Sense and Tableau to display financial reports for MSD's finance department.

JavaScript · D3.js · Power BI · Qlik Sense · Tableau

Designed and built a suite of ad tech tools still in production: a tag manager extension (4× faster ad script loading across 500+ websites), a Prebid.js analytics module, an event-driven library monitor, and a custom ad formats platform used by major advertising agencies.

Vanilla JS · Prebid.js · D3.js · Node.js, PHP · Puppeteer, Keboola, Snowflake, GoodData

Additional engagements available on request (real estate, BI, cross-domain tracking, Charles University, iOS development).

TECH LEADERSHIP & TRAINING

Led frontend teams as Tech Lead on multiple engagements.
Lectured Angular, TypeScript and JavaScript at ICT Pro (2020–2022).

KEY STRENGTHS

Quickly understand business needs and turn them into clear, practical next steps.
Work effectively with clients, analysts, designers, and developers to keep delivery aligned.
Spot improvement opportunities early and discuss them proactively to increase product value.
Spots risks and improvement opportunities early — before they turn into delays or costly rework.
Takes ownership, builds trust quickly, and stays calm when delivery gets complex.

TECHNICAL SKILLS

Frameworks: React, Next.js, Angular

Languages: TypeScript, JavaScript, PHP, SQL

State / Data: Zustand, RxJS, SWR, D3.js, Prebid.js

Testing & QA: Cypress, ESLint, Prettier

BI & Reporting: Power BI, Qlik Sense, Tableau, Keboola, GoodData

Backend / Infra: Node.js, Koa, SQL, Snowflake

Other: WebSockets, Puppeteer, Google Docs API, Objective-C (iOS)

LANGUAGES

Czech: Native

English: Professional working proficiency

German: B2

EDUCATION

MSc — Instruments and Methods for Biomedicine Czech Technical University (CTU), Kladno

2007–2009

BSc — Biomedical and Clinical TechnologyCzech Technical University (CTU), Kladno

2004–2007

PhD candidate — Multivariable Data AnalysisCzech Technical University (CTU), Kladno

2007–2009

Research in data mining and multivariable analysis. Not completed — transitioned to full-time commercial development.

Vojtěch Kaláb

Senior Software Developer Tech Lead Freelance Consultant