Senior Software Engineer • • Omniscient 05/2025 - Present Remote Led front-end development of executive-facing analytics dashboards using React and TypeScript, delivering interactive data visualisations tailored for C-level stakeholders Designed and implemented dynamic UI components for NLP, topic modelling, and AI driven text analysis platforms, translating complex data outputs into actionable business insights • • • • • • • • • • Built and maintained scalable ASP.NET Core (C#) backend services, contributing to API design, data aggregation logic, and performance optimisation Developed and consumed RESTful APIs, ensuring reliable, high-performance data exchange between frontend applications and backend services Implemented real-time UI updates using WebSockets / SignalR, enabling dashboards to react instantly to backend events and streaming data Integrated advanced charting and visualisation solutions using Highcharts, creating interactive, responsive graphs and dashboards for large datasets Collaborated closely with data engineers and data scientists to align frontend data representations with AI models and analytical outputs Contributed to cloud-hosted solutions on Azure, supporting application deployment, scaling, and monitoring in production environments Applied modern state management patterns using Redux, ensuring predictable state flow in complex, data-heavy React applications Participated in Agile development processes, including sprint planning, code reviews, and cross-functional technical discussions Ensured code quality and maintainability through use of Git, structured pull requests, and collaborative development workflows Acted as a senior technical contributor, mentoring team members and bridging frontend and backend concerns to deliver end-to-end features

Arkadiusz Klimek

Senior Software Engineer • • Omniscient 05/2025 - Present Remote Led front-end development of executive-facing analytics dashboards using React and TypeScript, delivering interactive data visualisations tailored for C-level stakeholders Designed and implemented dynamic UI components for NLP, topic modelling, and AI driven text analysis platforms, translating complex data outputs into actionable business insights • • • • • • • • • • Built and maintained scalable ASP.NET Core (C#) backend services, contributing to API design, data aggregation logic, and performance optimisation Developed and consumed RESTful APIs, ensuring reliable, high-performance data exchange between frontend applications and backend services Implemented real-time UI updates using WebSockets / SignalR, enabling dashboards to react instantly to backend events and streaming data Integrated advanced charting and visualisation solutions using Highcharts, creating interactive, responsive graphs and dashboards for large datasets Collaborated closely with data engineers and data scientists to align frontend data representations with AI models and analytical outputs Contributed to cloud-hosted solutions on Azure, supporting application deployment, scaling, and monitoring in production environments Applied modern state management patterns using Redux, ensuring predictable state flow in complex, data-heavy React applications Participated in Agile development processes, including sprint planning, code reviews, and cross-functional technical discussions Ensured code quality and maintainability through use of Git, structured pull requests, and collaborative development workflows Acted as a senior technical contributor, mentoring team members and bridging frontend and backend concerns to deliver end-to-end features

Available to hire

Senior Software Engineer


Omniscient 05/2025 - Present Remote
Led front-end development of executive-facing analytics dashboards using React and
TypeScript, delivering interactive data visualisations tailored for C-level stakeholders
Designed and implemented dynamic UI components for NLP, topic modelling, and AI
driven text analysis platforms, translating complex data outputs into actionable business
insights










Built and maintained scalable ASP.NET Core (C#) backend services, contributing to API
design, data aggregation logic, and performance optimisation
Developed and consumed RESTful APIs, ensuring reliable, high-performance data
exchange between frontend applications and backend services
Implemented real-time UI updates using WebSockets / SignalR, enabling dashboards to
react instantly to backend events and streaming data
Integrated advanced charting and visualisation solutions using Highcharts, creating
interactive, responsive graphs and dashboards for large datasets
Collaborated closely with data engineers and data scientists to align frontend data
representations with AI models and analytical outputs
Contributed to cloud-hosted solutions on Azure, supporting application deployment,
scaling, and monitoring in production environments
Applied modern state management patterns using Redux, ensuring predictable state flow
in complex, data-heavy React applications
Participated in Agile development processes, including sprint planning, code reviews, and
cross-functional technical discussions
Ensured code quality and maintainability through use of Git, structured pull requests, and
collaborative development workflows
Acted as a senior technical contributor, mentoring team members and bridging frontend
and backend concerns to deliver end-to-end features

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Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
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Language

English
Fluent
German
Beginner

Work Experience

Senior Software Engineer at CSOFT International
June 1, 2025 - September 9, 2025
Led full-stack development of a customer-facing portal using Node.js and React, increasing user engagement by 40% within six months. Architected serverless microservices with AWS Lambda, API Gateway, and EventBridge, reducing backend latency by 45%. Integrated OpenAI API and Google Cloud AI to automate content summarization and multilingual translation, reducing manual QA time by 35%. Designed and implemented real-time stock update features using React, WebSocket, and AWS AppSync. Built a scalable, event-driven inventory system with TypeScript, DynamoDB, and EventBridge, processing thousands of concurrent updates. Delivered AI-powered product search using Azure OpenAI embeddings, increasing successful user search outcomes by 50%. Managed CI/CD pipelines using GitHub Actions and Jenkins, reducing deployment efforts by 60% and improving code reliability. Wrote robust test suites using Jest and Cypress to achieve 90%+ coverage and cut regression issues by 50%. Partnered with UI/UX teams t
Senior Software Engineer at Treative
April 1, 2023 - September 9, 2025
Designed and developed an AI-powered financial automation system using Node.js, FastAPI, and React, saving the company over $20K/month in manual processing costs. Integrated OpenAI for invoice classification and Azure STT/TTS to enable voice-assisted transaction processing. Built secure, scalable RESTful APIs using Express.js and Python Flask, serving over 10K monthly active users. Implemented OAuth2, JWT, and DynamoDB-based session management for secure authentication. Delivered production-ready mobile payment features with React Native, integrating Stripe and PayPal APIs with full PCI compliance. Architected microservices for asynchronous job execution using Celery and RabbitMQ, improving task scalability by 40%. Spearheaded the adoption of Next.js SSR for marketing pages, improving SEO rankings and decreasing first load time by 40%. Applied Agile methodologies using Jira, leading to a 20% increase in project delivery efficiency. Built interactive admin dashboards using React and Fla
Full Stack Developer at Scalo
March 1, 2020 - September 9, 2025
Designed a Node.js-based licensing system with React Native mobile frontends, increasing throughput by 200%; crafted RESTful APIs with NestJS, improving response times by 42%. Built interactive UIs and data visualizations with Next.js, TypeScript, and Redux-Toolkit. Conducted security audits on NestJS apps and implemented OWASP best practices. Led architectural decisions for the web app, including database schema, authentication/authorization, and external API integrations. Delivered responsive web and mobile apps with React/React Native, achieving 25% engagement growth. Deployed microservices on AWS with Docker/Kubernetes, slashing deployment times by 60% and integrating MongoDB. Mentored teams and led workshops on modern JavaScript and Node.js to boost delivery speed.
Software Developer Intern at Admiral Group Plc
March 1, 2016 - September 9, 2025
Enhanced performance of key web applications through advanced coding techniques with AngularJS and Vue.js; established reusable components to streamline updates, improving user satisfaction. Built interactive apps using React and Vue, leveraging jQuery, AJAX, HTML, CSS, Tailwind CSS, and Material UI. Developed responsive interfaces for over 10 web and mobile apps across platforms, increasing engagement by 25%. Transformed designs from Photoshop and Figma into standards-compliant XHTML/CSS for optimal performance and accessibility.
Intern at Admiral Group
March 1, 2015 - March 1, 2016
Conducted security audits on NestJS applications, applying OWASP best practices to reduce vulnerabilities. Outlined architecture for the web application including database schemas, authentication and authorization mechanisms.
Full Stack Developer at Skalo
March 1, 2016 - March 1, 2020
Designed a high-performance Node.js-based licensing system utilizing asynchronous patterns and optimized database queries. Built interactive UI components and data visualizations using Next.js, TypeScript and Redux Toolkit, enabling intuitive cloud billing information.
Senior Front End Engineer at Various (Krakow, Poland)
March 1, 2020 - March 1, 2023
Designed and implemented front-end architecture with reusable components, improving consistency and reducing maintenance. Delivered executive-facing UI features and enhanced user experience.
Senior Full Stack Engineer at SOFT International
March 1, 2023 - April 1, 2025
Remote-led development of a customer portal that improved user engagement by 40% by integrating purchasing history and accessibility with an intuitive dashboard. Used React, TypeScript, Redux Toolkit, and PostgreSQL for data management. Implemented serverless back-end with Node.js and AWS Lambda, and integrated Stripe and PayPal for checkout. Built live stock updates with WebSockets/SignalR and AWS AppSync; connected back-end via RESTful APIs.
Senior Software Engineer at Omniscient
May 1, 2025 - Present
Led development of a customer portal's back-end and front-end, delivering real-time data updates and scalable architecture using React, TypeScript, Redux Toolkit, PostgreSQL, and AWS services. Built serverless components with Node.js and AWS Lambda; integrated Stripe/PayPal; set up RESTful APIs, GraphQL via AppSync, and EventBridge-based event processing; implemented containerized deployments with Docker and orchestrated via Kubernetes.

Education

BSc, Computer Science & IT at Arden University - UK
January 11, 2030 - June 1, 2016
Bachelor of Science in Computer Science and Information Technology at Arden University
September 1, 2012 - September 1, 2016

Qualifications

Add your qualifications or awards here.

Industry Experience

Software & Internet, Professional Services, Computers & Electronics