Alex Ishenko

Executive Summary

Principal Full-Stack Engineer & Certified SAFe Agile practitioner with 20 years of experience. Expert in the full technical lifecycle: React/Next.js/Svelte frontends, scalable Node.js backends, and AWS CDK infrastructure.

Core Philosophy

"Invisible Infrastructure" – I build systems so reliable that product teams can ship 10x faster without operational friction. I love continuity on the Individual Contributor track, solving the complex architectural bottlenecks that typically stall high-growth startups.

Founding Software Engineer | Vienna

• End-to-End Architecture: Solely responsible for the full-stack technical delivery of a secure fintech platform, bridging React/Next.js interfaces with a high-throughput Node.js service layer.
• Production-Grade Infrastructure: Architected the entire AWS foundation using TypeScript CDK, implementing VPC isolation, automated CI/CD, and security guardrails for 1-click deployments.
• Real-Time Financial Engine: Engineered a high-performance Node.js backend optimized for reactive financial data streams, ensuring data integrity and sub-second UI updates.
• Security & Compliance: Designed a "Secure by Design" framework (IAM, Encryption, Audit Logging) to meet rigorous fintech standards for sensitive financial transactions.
• AI Orchestration: Integrated LLM-driven workflows into the Node.js ecosystem to automate data categorization and financial insights using modern AI agent patterns.

Skills: JavaScript, TypeScript, Next.js, AWS, Node.js, React.js, Python, Cybersecurity, Scalability, Agile, Technical Architecture, SaaS, AI Agents, LLM, Leadership

Staff Engineer (Platform & Full-Stack) | Vienna

• Delivering worldwide solutions: Continuously increasing click-through rate and reducing hop off rate by measurable percentage through delivering new core features.
• High-Performance Web Apps: Engineered greenfield, real-time AI web applications using TypeScript, React, and Next.js/Svelte. Optimized client-side state and browser rendering for heavy generative AI assets.
• Hybrid Node.js & Python Architecture: Designed a distributed microservices system where Node.js managed core logic and real-time state, while Python (FastAPI) handled high-intensity ML inference and auto-scaling GPU workloads.
• Low-Latency Synchronization: Developed high-throughput API protocols using WebSockets and gRPC to bridge the frontend with AI pipelines, achieving sub-second latency for real-time generative previews.
• Infrastructure as Code (IaC): Architected the complete AWS foundation using TypeScript CDK and built automated pipelines for seamless deployment of web services and high-performance GPU clusters.
• Observability & Reliability: Established a "Trusted Foundation" by implementing full-stack monitoring (Datadog/CloudWatch), reducing incident response time across the distributed microservices ecosystem.

Skills: JavaScript, TypeScript, Next.js, Node.js, AWS, Python, FastAPI, PyTorch, Agile

Staff Engineer (Web Platform & Performance) | Austria, On-site

• Edge Computing & WebAssembly: Engineered mission-critical identity verification modules using WebAssembly (Wasm) to port complex logic to the browser, reducing server-side processing costs by ~40% and lowering global latency.
• React-Based SDK Architecture: Owned the technical evolution of the core React-based Web SDK, ensuring a high-performance TypeScript environment capable of handling millions of concurrent identity checks.
• Cross-Functional Node.js Consulting: Acted as an internal consultant to product teams, resolving performance bottlenecks in Node.js event loops and React rendering pipelines and establishing company-wide frontend performance best practices.
• Enterprise System Resilience: Designed robust error-handling and fallback mechanisms for the verification flow, directly increasing conversion rates for high-stakes financial and healthcare enterprise clients.
• Security & Data Privacy: Partnered with compliance teams to ensure web-based data collection met global biometric and privacy standards (GDPR, SOC2, ISO), improving trust for enterprise customers.

Achievements: Implemented ML models in-browser (WebAssembly) to reduce backend load • Led cross-functional initiatives to improve frontend performance for enterprise customers • Reduced post-release bug rate through resilience improvements

Skills: React.js, TypeScript, JavaScript, Node.js, AWS, Docker, Cypress, RxJS, NestJS, Python, WebAssembly, B2B, SaaS, Agile, Technical Leadership

Lead Front end Developer | Remote (EU to US), Contractor

Replaced old Adobe flash-based app with a brand new translation service for world-famous movie companies (20th Century Fox, Warner Bros, etc.)

• Technical Leadership: Led frontend development team, providing technical guidance and contributing to strategic decision-making processes
• Reverse engineering: Successfully reproduced more than 50% of old Adobe flash-based application in just first 6 months under hard deadline
• Intuitive interfaces: Delivered functionality close to a video editor with GIT-like functions in a web app for non-technical users (translators) with very low 'how it works' question rate
• Complex key integrations: Integrated and automatically delivered movie trailers to 86 destinations, thousands of partners, websites, and social networks

Achievements: Founded and scaled a project from inception, leading a team of up to 10 members • Produced over 1200 lines of code per day on average within 2.5 years

Skills: JavaScript, TypeScript, Angular, Redux.js, RxJS, SASS, CSS, socket.io, Cypress, Jest, Webpack, KeyCloak, PHP, MySQL, Redis, Docker, AWS, Agile

Senior Frontend Developer | Tallinn, Estonia, On-site

Worked for an online sportsbook (bookmaker) building interfaces for user account: KYC, payments, etc.

• Core components: Participated in creating set of common core components used by other departments
• A/B testing development: Participated in setting up pipeline for creating A/B testing tools for inner use to check metrics of deployed features
• Apache Cordova mobile application: Actively participated in developing from ground Apache Cordova mobile application

Achievements: Implemented many highly secured payment gateway integrations • Became a member of core team making globally affecting technical decisions improving user engagement, KYC and payments • Developed an app 100% following TDD principles

Skills: JavaScript, Backbone.js, React.js, CSS, socket.io, Java, Apache Tomcat, Apache Cordova, MySQL, MongoDB, Redis, A/B testing, TDD

Founder | Rostov-on-Don, Russia, On-site

A Web-Studio building websites and apps for corporate clients

• Web Development: Building and maintaining high-quality websites and web applications to meet client needs
• Search Engine Optimization (SEO): Implementing strategies to improve website visibility and organic search rankings
• Team Leadership: Managing and developing a team of 20 web development professionals

Achievements: Founded and successfully scaled a web studio to 20 employees, generating profit during entire leadership until exit • Developed an automated SEO analytics and automation platform • Developed a sophisticated CRM for client relations • Had more than 200 clients at the same time

Skills: JavaScript, Node.js, Express.js, jQuery, HTML, CSS, MySQL, PHP, CMS, WordPress, Drupal, Joomla, SEO, Nginx, Apache, Git