Available to hire
Hi, I’m Andrew Berg, a senior frontend engineer with 10+ years of experience building scalable web and mobile applications. I specialize in React, Next.js, TypeScript, and design systems, focusing on performance, accessibility, and developer velocity. I’ve led AI-driven platform UI efforts, built interactive tooling for complex workflows, and mentored teams to ship high-quality software.
I’m passionate about turning complex requirements into intuitive user experiences and collaborating with product and design to drive impact. I enjoy crafting robust frontend architectures, championing accessible design, and continuously improving engineering processes to boost delivery speed and product outcomes.
Skills
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Work Experience
Lead Software Engineer at Maya AI
February 1, 2024 - June 9, 2024Led the team in building a Robotic Process Automation (RPA) system to automate complex workflows, significantly increasing contact and conversion rates. Designed a workflow studio canvas for seamless management and built a prompt engineering studio for custom prompts. Integrated Large Language Models into the RPA platform to enable generative AI capabilities. Developed Infrastructure as Code (IaC) solutions using Terraform and AWS for scalable deployments. Expanded platform functionality by integrating Slack, Calendly, Typeform, and SMS services. Created an ELK dashboard for real-time system performance analysis. Led SOC compliance and security auditing efforts. Provided mentorship and led code reviews to maintain code quality.
Senior Full Stack Developer at Scale AI
September 1, 2021 - February 1, 2024Spearheaded development of an AI-powered generative platform delivering real-time insights for retail, finance, and healthcare sectors. Created responsive web and mobile user interfaces with React and React Native. Implemented Retrieval-Augmented Generation workflows to enhance AI response accuracy. Integrated LLM frameworks such as LangChain and LangSmith. Developed model fine-tuning systems to improve AI performance. Integrated Stripe for secure transactions. Optimized databases for LLM training data. Collaborated with cross-functional teams to integrate advanced ML models and deployed MLOps pipelines for automation.
Senior Software Engineer at Presto
February 1, 2019 - August 31, 2021Led design and implementation of RESTful APIs supporting AI-driven automation in restaurant environments. Developed scalable back-end architecture for real-time order processing. Improved data pipelines vital for analytics and operations in high-traffic settings. Designed database schemas and complex SQL queries using PostgreSQL. Developed data processing and analytics modules for business insights. Integrated Datadog and PagerDuty for system monitoring and reliability. Enhanced cloud capabilities through Azure service integrations to optimize resource management and deployment.
Full Stack Developer at Walmart Global Tech
September 1, 2014 - December 31, 2018Developed web interfaces using HTML, CSS, and JavaScript to ensure seamless user experiences across devices. Improved site efficiency by implementing React, Angular, and Vue, enhancing page load times by 30%. Collaborated with UX/UI designers to produce high-quality UI components and customized admin dashboards with React-Admin. Employed responsive design with Tailwind CSS for adaptable interfaces. Integrated Laravel with SQL and NoSQL databases and co-designed RESTful APIs. Delivered CRM enhancements for diverse clients including local businesses and startups.
Lead Software Engineer at Maya AI
February 1, 2024 - June 13, 2024Led the development of a Robotic Process Automation system that automated complex workflows, significantly increasing contact and conversion rates. Designed and implemented tools such as a workflow studio canvas and prompt engineering studio for managing generative AI prompts. Integrated Large Language Models to enable AI capabilities within the RPA platform. Developed Infrastructure as Code solutions using Terraform and AWS for scalable deployments. Integrated various third-party services to expand platform functionality and built an ELK dashboard for real-time system monitoring. Led efforts for SOC 2 compliance, implementing security monitoring and auditing. Provided mentorship and led code reviews to maintain high code quality.
Senior Full Stack Developer at Scale AI
September 1, 2021 - February 1, 2024Spearheaded the development of an AI-powered generative platform offering real-time insights for retail, finance, and healthcare sectors. Created responsive web and mobile interfaces with React and React Native. Implemented Retrieval-Augmented Generation workflows to improve AI response accuracy. Integrated modern LLM frameworks including LangChain and LangSmith to manage complex workflows. Developed a system for model fine-tuning and deployed MLOps pipelines for automating ML lifecycle. Integrated Stripe payments for secure transactions and optimized database schemas for LLM training. Collaborated cross-functionally to enhance natural language processing capabilities.
Senior Software Engineer at Presto
February 1, 2019 - August 31, 2021Led design and implementation of RESTful APIs for AI automation solutions in restaurant environments. Built scalable back-end systems supporting real-time drive-thru order processing. Enhanced data pipelines and analytics modules managing scheduling and insights for high-traffic settings. Played a key role in PostgreSQL database schema design with complex SQL queries. Integrated monitoring tools such as Datadog and PagerDuty for system health. Leveraged Azure cloud services for deployment and resource optimization.
Full Stack Developer at Walmart Global Tech
September 1, 2014 - December 31, 2018Developed web interfaces using HTML, CSS, and JavaScript ensuring consistency across devices. Improved site efficiency and UI using modern frontend frameworks including React, Angular, and Vue, achieving 30% faster page load times. Collaborated closely with UX/UI designers to create high-quality UI components and customized admin dashboards with React-Admin. Employed responsive design using Tailwind CSS. Integrated Laravel backend with SQL and NoSQL databases and contributed to RESTful API design. Delivered CRM enhancements tailored to a broad client base from local businesses to startups.
Lead Software Engineer at Maya AI
February 1, 2024 - June 20, 2024Led the team to build a Robotic Process Automation (RPA) system automating complex workflows, significantly increasing contact and conversion rates. Designed and implemented workflow studio canvas and prompt engineering engine. Integrated Large Language Model to enable generative AI capabilities. Developed Infrastructure as Code solutions with Terraform and AWS for scalable deployments. Integrated third-party services like Slack and Calendly. Built ELK dashboard for real-time system tracking, led efforts for SOC compliance, and implemented security monitoring. Provided mentorship and led code reviews to maintain code quality and foster growth.
Senior Full Stack Developer at Scale AI
September 1, 2021 - February 1, 2024Spearheaded development of AI-powered generative platform delivering real-time insights across sectors such as retail, finance, and healthcare. Created responsive user interfaces for web and mobile using React and React Native. Implemented Retrieval-Augmented Generation workflows and integrated modern LLM frameworks like LangChain. Developed model fine-tuning systems and integrated Stripe payment solutions. Optimized databases for LLM training and collaborated with teams to enhance natural language processing. Developed and deployed MLOps pipelines for automation.
Senior Software Engineer at Presto
February 1, 2019 - August 31, 2021Led design and implementation of RESTful APIs for AI-driven automation in restaurant environments. Developed scalable back-end architecture supporting real-time drive-thru order processing. Improved data pipelines for analytics and operational insights. Designed complex PostgreSQL database schemas and queries. Built data processing and analytics modules for business insights. Integrated Datadog and PagerDuty for system health monitoring and Azure services for cloud capabilities and deployment optimization.
Full Stack Developer at Walmart Global Tech
September 1, 2014 - December 31, 2018Built web interfaces with HTML, CSS, and JavaScript ensuring seamless user experiences. Enhanced site efficiency by incorporating React, Angular, and Vue resulting in 30% faster page loads and improved UI. Collaborated with UX/UI designers to develop high-quality UI components. Customized React-Admin dashboards adhering to branding. Employed responsive design with Tailwind CSS and integrated Laravel with SQL and NoSQL databases for efficient data management. Designed RESTful APIs and delivered CRM enhancements to diverse clients.
Lead Software Engineer at Maya AI
February 1, 2024 - PresentLed the team to build a Robotic Process Automation system that automated complex workflows, significantly increasing the contact rate to over 70% and conversion rate to 35%. Designed and implemented a workflow studio canvas for seamless workflow management. Built a prompt engineering studio and integrated Large Language Models in the RPA platform, enabling generative AI capabilities. Developed Infrastructure as Code solutions using Terraform and AWS for scalable deployment. Integrated third-party services such as Slack, Calendly, Typeform, and SMS for expanded platform functionality. Created ELK dashboards for real-time performance tracking. Led efforts to achieve and maintain SOC compliance and implemented security monitoring measures. Provided mentorship and led code reviews to uphold code quality and professional growth within the team.
Senior Full Stack Developer at Scale AI
February 1, 2024 - August 20, 2025Spearheaded development of an AI-powered generative platform providing real-time actionable insights across retail, finance, and healthcare sectors. Created responsive, intuitive user interfaces for web and mobile using React and React Native. Implemented Retrieval-Augmented Generation workflows to improve AI-generated response accuracy and efficiency. Integrated modern LLM frameworks including LangChain, LangGraph, and LangSmith for complex workflow orchestration and monitoring. Developed system for model fine-tuning, enhancing model performance. Integrated Stripe payment solutions. Optimized database schemas and queries for efficient large dataset access needed for LLM training. Collaborated on natural language processing enhancements and developed MLOps pipelines for automated model lifecycle management.
Senior Software Engineer at Presto
August 31, 2021 - August 20, 2025Led design and implementation of RESTful APIs to enable AI-driven automation solutions in restaurant environments. Developed scalable back-end architecture supporting real-time order processing for drive-thru systems. Improved data pipelines crucial for analytics and operations in high-traffic restaurants. Designed complex PostgreSQL database schemas and queries to support fast, accurate order handling and reporting. Built data processing and analytics modules for business insights. Integrated Datadog and PagerDuty for monitoring system health. Leveraged Azure services to improve cloud deployment and resource management of scalable applications.
Full Stack Developer at Walmart Global Tech
December 31, 2018 - August 20, 2025Developed web interfaces using HTML, CSS, and JavaScript to ensure consistent user experiences across devices. Enhanced site efficiency by incorporating advanced frontend technologies including React, Angular, and Vue, achieving a 30% improvement in page load times. Collaborated with UX/UI designers to produce high-quality UI components. Customized admin dashboards using React-Admin aligned with corporate branding. Implemented responsive design with Tailwind CSS. Integrated Laravel with SQL and NoSQL databases for optimized data management. Participated in designing and implementing RESTful APIs. Delivered CRM enhancements tailored for diverse clients from local businesses to startups.
Lead Software Engineer at Maya AI
February 1, 2024 - PresentLed a team to build a Robotic Process Automation system automating complex workflows, increasing contact rates and conversion rates. Designed a workflow studio canvas for workflow management and integrated MCP for real-time, context-aware interactions. Developed a prompt engineering studio and engine, Infrastructure as Code solutions using Terraform and AWS, and integrated third-party services like Slack, Calendly, Typeform, and SMS. Built ELK dashboards for real-time system performance tracking, led efforts for SOC compliance, and mentored team members through code reviews and leadership.
Senior Full Stack Developer at Scale AI
February 1, 2024 - September 4, 2025Spearheaded development of a Model Evaluation Platform for testing and validating generative AI models at scale. Implemented Retrieval-Augmented Generation workflows to improve AI response efficiency. Integrated modern LLM frameworks including LangChain and developed model fine-tuning systems. Integrated Stripe payments, optimized database schemas for large datasets, collaborated with cross-functional teams on machine learning model integration, and developed MLOps pipelines for automated model training and deployment.
Senior Software Engineer at Presto
August 1, 2021 - September 4, 2025Designed and implemented RESTful APIs for AI-driven automation in restaurant environments. Developed scalable back-end architecture supporting real-time order processing, improved data pipelines for analytics, designed PostgreSQL database schemas and complex queries, and built data processing and analytics modules. Integrated Datadog, PagerDuty for system health monitoring, and Azure services for cloud deployment and resource optimization.
Full Stack Developer at Walmart Global Tech
December 1, 2018 - September 4, 2025Built web interfaces using HTML, CSS, and JavaScript, enhancing site efficiency with frameworks like React, Angular, and Vue. Collaborated with UX/UI designers to develop high-quality UI components, customized React-Admin dashboards, adopted responsive design with Tailwind CSS, and integrated Laravel with SQL and NoSQL databases. Worked on RESTful API design and delivered CRM enhancements to diverse clients.
Lead Software Engineer at Maya AI
February 1, 2024 - PresentLed the development of a Robotic Process Automation (RPA) system that automated complex workflows, improving contact rates to over 70% and conversion rates to 35%. Designed and built a workflow studio canvas for seamless workflow management and integrated real-time, context-aware interactions (MCP). Developed a prompt engineering studio for managing custom prompts and implemented Infrastructure as Code solutions using Terraform and AWS for scalable deployments. Integrated multiple third-party services including Slack, Calendly, Typeform, and SMS. Created ELK dashboards for real-time performance tracking and led efforts for SOC compliance. Provided mentorship and led code reviews to maintain code quality.
Senior Full Stack Developer at Scale AI
February 1, 2024 - September 4, 2025Spearheaded development of a Model Evaluation Platform to test, compare, and validate generative AI models at scale. Implemented Retrieval-Augmented Generation (RAG) workflows to enhance accuracy of AI responses. Integrated langChain and other modern LLM frameworks to orchestrate complex generative workflows. Developed systems for model fine-tuning and deployed MLOps pipelines to automate model training and deployment. Integrated Stripe payment solutions for web and mobile platforms. Optimized database schemas and collaborated cross-functionally to enhance natural language processing capabilities.
Senior Software Engineer at Presto
August 1, 2021 - September 4, 2025Led design and implementation of RESTful APIs to support AI-driven automation in restaurant environments, focusing on real-time order processing. Improved database interactions and schema design using PostgreSQL for scalable backend systems. Enhanced data pipelines and analytics modules for business insights. Integrated Datadog and PagerDuty for monitoring system health and Azure services for cloud deployment and resource management.
Full Stack Developer at Walmart Global Tech
December 1, 2018 - September 4, 2025Built web interfaces with HTML, CSS, JavaScript and modern frontend frameworks React, Angular, and Vue, improving page load times by 30%. Collaborated with UX/UI designers to deliver high-quality UI components and customized admin dashboards using React-Admin. Employed responsive design and integrated Laravel with SQL and NoSQL databases for efficient data management. Developed RESTful APIs and worked closely with diverse clients to enhance CRM solutions.
Lead Software Engineer at Maya AI
February 1, 2024 - PresentLed frontend initiatives including establishing a design system and StoryBook component library for cross-team consistency; designed and implemented a workflow studio canvas using React and D3 for drag-and-drop RPA workflow management; built a Prompt Engineering Studio with real-time feedback loops enabling non-technical users to design, evaluate, and deploy prompts; developed scalable frontend architecture with React + TypeScript to support growing user/workflow demands; defined frontend performance budgets and accessibility standards, improving Lighthouse scores by 25%; mentored engineers on UI patterns, testing (Jest, Cypress), and performance, boosting velocity and code quality.
Senior Frontend Engineer at Scale AI
February 1, 2024 - October 1, 2025Led frontend development of a Model Evaluation Platform for testing, comparing, and validating generative AI models at scale; built React/Next.js interfaces to visualize evaluation metrics, errors, and benchmark comparisons, making complex ML results interpretable for non-technical stakeholders; designed interactive dashboards for dataset exploration and annotation; implemented modular React components and state management patterns, reducing UI code duplication by 40% and accelerating feature rollout; led frontend automation testing with Playwright, Jest, and Cypress and integrated them into CI/CD pipelines; improved frontend performance via lazy loading, code splitting, and caching strategies, reducing load time by 25%; collaborated with designers and researchers to translate model evaluation needs into user-friendly workflows, increasing internal adoption.
Senior Frontend Engineer at Presto
August 1, 2021 - October 1, 2025Spearheaded the design and implementation of RESTful APIs, facilitating seamless data exchange and integration for AI-driven automation solutions within restaurant environments; built drive-thru ordering dashboards and real-time interfaces with React, improving order accuracy and processing speed; established frontend coding standards and reusable patterns, reducing new feature delivery time by 30%; designed data visualization UIs for analytics teams, improving decision-making for restaurant partners; partnered with product managers and designers to ensure pixel-perfect, responsive design delivery; led frontend integration of Azure cloud services, streamlining deployment pipelines and scaling customer-facing apps.
Software Engineer at Walmart Global Tech
December 1, 2018 - October 1, 2025Built web interfaces using HTML, CSS, and JavaScript, ensuring seamless user experiences across diverse devices for a consistent look and feel; enhanced site performance by adopting frontend technologies like React, Angular, and Vue, contributing to a 30% improvement in page load times; collaborated with UX/UI designers to translate concepts into high-quality UI components; customized admin dashboard aesthetics using React-Admin and Tailwind CSS to align with branding; contributed to RESTful API design and frontend-backend integration; engaged with a broad range of clients delivering CRM enhancements tailored to their needs.
Education
Bachelor's at National Taiwan University
April 1, 2010 - June 30, 2014Bachelor at National Taiwan University
April 1, 2010 - June 30, 2014Bachelor of Computer Science at National Taiwan University
April 1, 2010 - June 30, 2014Bachelor of Computer Science at National Taiwan University
April 1, 2010 - June 1, 2014Bachelor of Computer Science at National Taiwan University
April 1, 2010 - June 1, 2014Bachelor of Computer Science at National Taiwan University
April 1, 2010 - June 1, 2014Bachelor of Computer Science at National Taiwan University
April 1, 2010 - June 1, 2014Qualifications
Industry Experience
Software & Internet, Financial Services, Healthcare, Retail, Consumer Goods, Travel & Hospitality, Transportation & Logistics, Professional Services, Media & Entertainment
Skills
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
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