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I’m Adrian Szechnicki, a Senior Software Engineer based in Warsaw, Poland. I have 9+ years of experience delivering high-impact web, full-stack, and AI-powered solutions across enterprise, startup, and consulting environments. I specialize in JavaScript/TypeScript, React, Next.js, Node.js, and Python, with hands-on expertise in frontend architecture, scalable backend systems, and applied artificial intelligence. I’ve led real-world projects involving LLM-based systems, data-driven dashboards, and cloud-native platforms, and I enjoy mentoring engineers and collaborating with cross-functional teams to build secure, scalable software that aligns with business goals.…I’m Adrian Szechnicki, a Senior Software Engineer based in Warsaw, Poland. I have 9+ years of experience delivering high-impact web, full-stack, and AI-powered solutions across enterprise, startup, and consulting environments. I specialize in JavaScript/TypeScript, React, Next.js, Node.js, and Python, with hands-on expertise in frontend architecture, scalable backend systems, and applied artificial intelligence. I’ve led real-world projects involving LLM-based systems, data-driven dashboards, and cloud-native platforms, and I enjoy mentoring engineers and collaborating with cross-functional teams to build secure, scalable software that aligns with business goals.

Adrian Szechnicki

Full Stack Developer, Web Developer, Front-End Developer, +2

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I’m Adrian Szechnicki, a Senior Software Engineer based in Warsaw, Poland. I have 9+ years of experience delivering high-impact web, full-stack, and AI-powered solutions across enterprise, startup, and consulting environments. I specialize in JavaScript/TypeScript, React, Next.js, Node.js, and Python, with hands-on expertise in frontend architecture, scalable backend systems, and applied artificial intelligence. I’ve led real-world projects involving LLM-based systems, data-driven dashboards, and cloud-native platforms, and I enjoy mentoring engineers and collaborating with cross-functional teams to build secure, scalable software that aligns with business goals.…I’m Adrian Szechnicki, a Senior Software Engineer based in Warsaw, Poland. I have 9+ years of experience delivering high-impact web, full-stack, and AI-powered solutions across enterprise, startup, and consulting environments. I specialize in JavaScript/TypeScript, React, Next.js, Node.js, and Python, with hands-on expertise in frontend architecture, scalable backend systems, and applied artificial intelligence. I’ve led real-world projects involving LLM-based systems, data-driven dashboards, and cloud-native platforms, and I enjoy mentoring engineers and collaborating with cross-functional teams to build secure, scalable software that aligns with business goals.

Available to hire

I’m Adrian Szechnicki, a Senior Software Engineer based in Warsaw, Poland. I have 9+ years of experience delivering high-impact web, full-stack, and AI-powered solutions across enterprise, startup, and consulting environments.

I specialize in JavaScript/TypeScript, React, Next.js, Node.js, and Python, with hands-on expertise in frontend architecture, scalable backend systems, and applied artificial intelligence. I’ve led real-world projects involving LLM-based systems, data-driven dashboards, and cloud-native platforms, and I enjoy mentoring engineers and collaborating with cross-functional teams to build secure, scalable software that aligns with business goals.

Skills

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Work Experience

Senior Software Engineer at Innowise Group

May 1, 2025 - Present

Led development of a large-scale enterprise web platform using React, Next.js, and TypeScript for a European fintech client with 120k+ monthly active users. Architected frontend system and component library, reducing UI defects by 35% and improving development speed by 25%. Implemented SSR and caching strategies in Next.js, boosting page load performance by 40%. Collaborated with backend teams to integrate Node.js, GraphQL, and REST APIs into complex workflows. Established automated testing pipelines with Jest and Playwright and set up CI/CD, increasing release stability by 30%. Mentored 5+ engineers and improved accessibility and SEO, driving 20% higher organic traffic. Delivered a real-time analytics dashboard with sub-second latency.

AI Engineer at Andersen Lab

September 1, 2022 - March 1, 2025

Developed AI-powered platforms for predictive analytics and intelligent automation using Python, TensorFlow, and PyTorch. Built and deployed LLM-based chat and recommendation systems using OpenAI API and LangChain, serving 50k+ users. Designed scalable AI microservices with FastAPI and Docker, reducing inference latency by 45%. Integrated AI pipelines into existing React/Node.js applications. Implemented NLP solutions for document analysis achieving 92% accuracy in text classification tasks. Optimized data pipelines with PostgreSQL, Redis, and batch processing for datasets >10M records. Delivered an AI-driven fraud detection module reducing false positives by 28%.

Full Stack Engineer at SoluLab

May 1, 2020 - June 1, 2022

Built end-to-end SaaS applications for international clients using React, Node.js, and TypeScript. Developed backend services with NestJS and Express, supporting 100K+ API requests/day. Implemented role-based access control and authentication using JWT and OAuth2. Created real-time features with WebSockets, improving user engagement by 30%. Designed relational and NoSQL databases, optimizing queries and reducing response times by 40%. Collaborated with UI/UX to deliver pixel-perfect interfaces. Automated deployment pipelines with Docker and cloud services, reducing manual releases by 60%. Delivered a multi-tenant project management platform used by 200+ companies.

Frontend Developer at Jay Analytix Inc

July 1, 2018 - April 1, 2020

Developed data visualization dashboards using React and D3.js for enterprise analytics products. Translated complex business requirements into scalable frontend architectures. Improved rendering performance by 35% via memoization and component optimization. Integrated RESTful APIs and real-time data streams. Collaborated with data scientists to visualize large datasets effectively. Enhanced cross-browser compatibility and mobile responsiveness. Reduced UI-related issues by 25% through refactoring. Delivered analytics portal used by 10,000+ users globally.

UI Designer at Jay Analytix Inc

May 1, 2017 - July 1, 2018

Designed user-centered interfaces for analytics and reporting tools. Created reusable UI components and design systems adopted across products. Collaborated with engineers to ensure design feasibility and performance. Conducted usability testing, increasing task completion rates by 20%.

JavaScript Engineer at Jay Analytix Inc

October 1, 2016 - May 1, 2017

Developed interactive web components using JavaScript and jQuery. Maintained and enhanced legacy frontend systems. Integrated frontend modules with backend APIs. Improved code maintainability through refactoring. Fixed performance bottlenecks, improving load times by 15%.