Nikola K.

Propylon builds enterprise legislative and document-management platforms used by government and regulatory bodies for large-scale XML-based content workflows.

• Designed and shipped REST and GraphQL services in Python for document-heavy platforms, partnering with React teams on end-to-end product flows

• Built Celery and Redis pipelines for long-running document generation and synchronization with idempotency, retries, and structured logging

• Improved performance and reliability through PostgreSQL query tuning, schema adjustments, and clearer integration boundaries

• Supported Elasticsearch-based indexing and retrieval workflows for large content sets and search-heavy user journeys

• Contributed API documentation, runbooks, integration standards, observability practices, and CI quality gates

Capaciteam is a software services company providing senior engineering capacity to enterprise clients across regulated and data-intensive industries.

• Delivered enterprise features in Python and Laravel with focus on maintainability, security, and clearer service ownership

• Refactored APIs and internal workflows to improve consistency, long-term development speed, and delivery quality

• Improved CI pipeline speed and developer experience through shared tooling and automated checks

• Acted as bridge between client engineering teams and delivery management, ensuring scope and quality alignment

• Delivered backend-heavy engagements for six clients across multi-year and short-term gigs, with Episcope Monitoring Systems running 2.5+ years and Leaseonline running 1 year

• Built features for Leaseonline, a Swedish eCommerce platform selling new cars to major car brands, in Laravel and Vue.js — adding new functionality to the existing checkout and quoting flows

• Worked on Episcope Monitoring Systems' production-data platform for the forest, sawmill, and manufacturing industries, structuring legacy PHP code and supporting future feature development with Python services

• Delivered WordPress and WooCommerce engineering for Supervers, a Belgian online grocery platform — building plugins, fixing performance issues, and improving site reliability (10/10 client review)

• Handled WordPress, PHP, and WooCommerce maintenance and optimization for MotoWrap, a Swedish motorsport eCommerce site, applying best practices for long-term maintainability

• Delivered WordPress and Tailwind CSS development for Julian Wright Websolutions, including custom Elementor modules, theme setup, and frontend tooling integration

• Maintained 9/10 review scores across multi-year client engagements

• Created a marketplace with integration options for WooCommerce, Shopify, Square Space, Wix, and Magento stores, and an aggregator for curated content from YouTube, Vimeo, and DailyMotion.

Small to medium-scale web app solutions and development.

Social Media Automation tool that integrates with Twitter, Facebook, and Linkedin. It offers easy integration with Feeds, YouTube Channels, and WordPress.

• WordPress and Laravel web apps development.

WP Safe Mode delivered WordPress security, diagnostic, and utility tools for site owners and agencies.

• Led product engineering for WordPress security and utility plugins distributed to thousands of site owners

• Designed plugin architecture and update flows with focus on backwards compatibility and reliability

• Owned roadmap, technical decisions, and release management across the product portfolio

• WordPress solutions, CodeIgniter security, and utility tools, web development, web services.

• Drupal development, modules development and creation, HTML5 apps, Mobile and Tablet apps, Theme Development.

• Website development for Serbian television channel, screen overlay solutions using flash technology - voting tables.
• Web apps creation.

• Student Assistant. 3D software - Softimage.
• Learning students’ 3D modeling, animation, and visualization skills.

• Website solutions - portfolios, e-commerce solutions, Web Apps, Web Design, Graphic Design.