Stanislav Pintjuk

Spearheaded the architectural revitalization of a complex legacy codebase, decomposing tightly coupled 'spaghetti' components into a highly modular structure. Engineered frontend registration and 3D Secure (3DS) payment workflows using Svelte 5 during a critical migration from invoices to credit card processing. Ensured a flawless production rollout, resulting in over 900 customers successfully purchasing parking permits within the first week of launch with zero service disruption.

• PostgreSQL
• Rust
• Architecture
• Microservices
• Svelte 5
• React Native
• AWS
• Kubernetes
• TypeScript
• 3DS Integration

Successfully optimized large-scale e-commerce product pages, lifting Core Web Vitals (LCP/FCP) from the Lighthouse 'Poor' (Red) threshold into the stable 'Good/Needs Improvement' zones using server-side rendering and asset optimization workflows. Proactively identified and resolved critical accessibility gaps, ensuring robust WCAG compliance and an inclusive user experience across primary customer-facing flows.

• React
• Next.js
• TypeScript
• Sass
• Accessibility
• WCAG
• SSR
• Storybook
• Figma
• GitHub Actions
• Performance Optimization

Built frontend features using React and TypeScript. Integrated applications with Contentful CMS and worked with content-driven web experiences.

• React
• TypeScript
• Contentful
• CMS
• Frontend Development

Developed a multi-step loan application flow for ICA Banken as a React-based frontend system. Built complex form UI with custom field types and implemented cross-step validation logic to ensure consistency and correctness throughout the application process. Worked within an established design system and visual language, translating UX designs into production-ready components while handling numerous edge cases across navigation and state transitions in the flow. The application was successfully launched and used in production by customers applying for loans.

• React
• TypeScript
• Forms
• Frontend Architecture
• Validation Logic
• Design Systems
• Banking

Worked across multiple high-impact initiatives within Nordax Bank’s internal banking and customer systems. Initially led a platform-wide transformation by migrating legacy build artifacts into structured Git repositories and designing automated build and release pipelines using PowerShell and Octopus Deploy. Reduced release cycles from approximately one week to a few hours through CI/CD and deployment automation. Contributed to the development of a backend integration layer for a German loan application flow, building APIs used by an external banking partner to handle application processing and finalization workflows. Later developed a React-based internal customer support tool used by call center staff to access customer loan data and perform administrative actions such as issuing payment adjustments and account changes. Implemented telephony integration, including call queue handling and pre-loading customer context while agents were in queue to improve response efficiency. Maintained and extended multiple internal banking tools in parallel.

• .NET
• C#
• React
• Octopus Deploy
• CI/CD
• Backend APIs
• System Integration
• Telephony Integration
• Banking Systems

Developed a new public-facing municipal website from scratch for Kristinehamns Kommun, serving as the primary digital communication channel for citizens. Built the solution using Episerver CMS, designing and implementing content templates, page structures, and logic-driven components in both frontend and backend. Integrated Episerver Find to enable site-wide search functionality. Worked in a small two-person team in close collaboration with a UX designer, taking responsibility for establishing the overall information architecture and CMS structure in the absence of an existing system baseline. Successfully delivered and launched a full replacement of the previous municipal website, which remains in production today.

• Episerver
• C#
• Razor Pages
• CMS Architecture
• Episerver Find
• Fullstack Development
• UX Collaboration

Maintained and developed the public-facing website for Stockholms Hamnar (Port of Stockholm). Took responsibility for migrating the website’s global search functionality after Google discontinued the underlying search API. Implemented a replacement based on Episerver Find to ensure continued site-wide search capability for public users. Worked within an existing CMS-based system, focusing on backend integration and frontend search functionality to maintain continuity of core website features.

• Episerver
• Episerver Find
• C#
• CMS
• Search Migration
• Fullstack Development
• Maintenance Engineering

Engineered a structured relational database solution in MS Access to replace fragile spreadsheet workflows, securing and streamlining accessibility project data.

• SQL
• VBA
• Microsoft Access
• Database Development
• Accessibility

Rebuilt and modernized a legacy iOS application used for real-time cruise ship information in Stockholm and Nynäshamn. Migrated the codebase from Objective-C to Swift and replaced a WebView-based implementation with a native application architecture and updated UI. Worked under significant constraints including poor documentation and limited handover from a previous consultancy, requiring reverse-engineering of existing API behavior. Delivered the rewrite while simultaneously learning Swift and iOS development practices, successfully shipping the application within the project timeline. The application remains in production use today.

• Swift
• iOS
• Objective-C Migration
• API Integration
• Legacy Systems
• Mobile Development

Developed backend services with .NET Core and frontend SPA functionality using Aurelia. Introduced service-oriented architecture separating frontend and backend concerns.

• .NET Core
• Aurelia
• Architecture

WAM List

Centralized catalog and testing platform for Web Audio Modules, combining web development with music technology to make browser-based audio processing modules easier to discover and test.

• Built a web platform around the Web Audio ecosystem
• Designed low-latency browser-based testing environments leveraging Web Audio APIs
• Combined frontend engineering with audio technology

• Web Audio
• Audio Processing
• Music Technology
• Web Development

Foil Programming Language

Designed and implemented a custom programming language in Rust, including tokenization, parsing, and static HTML generation pipeline, exploring compiler design and static site architecture.

• Engineered a custom tokenization and parsing pipeline in Rust to evaluate static HTML generation
• Implemented static site generation concepts

• Rust
• Programming Language
• Static Site Generation

Silverfish Android Launcher

Lightweight Android launcher optimized for small screens and low-performance devices.

• Designed a memory-efficient Android UI optimized for constrained devices

• Java
• Android SDK
• Mobile Development

Building Footprint Extraction

Tool generating 3D city models from 2D maps using Unity.

• Implemented procedural generation logic
• Processed map data into 3D structures

• C#
• Unity
• 3D Graphics
• Procedural Generation