Technologies / JavaScript

JavaScript development services

Are you settling for average JavaScript developers? We aren't. We transform business challenges into real solutions with developers who raise the bar - ready to start in two weeks.

Our services

What we build with JavaScript

Full-stack JavaScript development

We build end-to-end JavaScript applications: frontend, backend, and everything connecting them. For Greenfee365, we rebuilt their entire booking and payment platform. The result: 121% increase in order values and 63% more bookings year over year. For one client under NDA, we rebuilt a legacy shipping portal from scratch using Next.js and Node.js, adding CO2 emissions tracking, automated invoicing, and carrier price comparisons in one platform.

Frontend development and optimization

Slow frontends lose customers. We’ve fixed this repeatedly. For Arvid Nilsson, we rebuilt their B2B e-commerce frontend with custom APIs and Azure integration. Product indexing went from days to 2 minutes. Their sales team stopped managing data and started selling. For a Swedish EdTech platform with tens of thousands of users across Europe, we built the Angular frontend while their internal team focused on the product roadmap.

Enterprise JavaScript applications

Complex business logic needs clean architecture. We build JavaScript systems that hold up at scale — multi-tenant platforms, real-time data, third-party integrations, high-volume transactions. For Zynka, we built a digital twin platform for managing building infrastructure data using a Node.js and Laravel hybrid with Kafka for messaging. The platform was complex enough to attract significant investment and spin off into a new company entirely.

real estate software development company

PROJECT

Zynka

Learn how our property management software development enabled Zynka to cut costs, improve efficiency, and launch a new company.

TECHNOLOGIES

The Javascript tech stack we used in previous work

ManagING application state using plain JavaScript, leveraging core language features and browser APIs.

TALK WITH US

Not sure if JavaScript is the right call for your project?

Ask us. Senad, Nikola, or Haris will give you a straight answer, even if that means recommending something else.

LinkedIn profile

Haris Husejnovic

Growth Manager

LinkedIn profile

Nikola Mirković

Co-founder/ Co-CEO

LinkedIn profile

Senad Šantić

Co-founder/CEO

golf booking web development platform software development by zendev software company

GREENFEE 365

Payment development solutions and SEO services

The software we built integrates with many systems to deliver the best-priced tee times for golf players.

FAQ

Questions about JS we get asked

Zendev co-founder Nikola Mirkovic - enterprise software development partner for CTOs and IT leaders

Nikola Mirkovic • Co-founder / Co-CEO

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