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Software engineer specializing in React, Next.js, TypeScript, and PostgreSQL, with experience integrating AI features using OpenAI APIs. Focused on structured AI outputs, safety/moderation fallbacks, and secure authentication/authorization. Delivered measurable improvements in user onboarding and iteration speed.…

Daniel H. (name partially obfuscated)

Full Stack Developer, Software Engineer, Web Developer, +2

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Software engineer specializing in React, Next.js, TypeScript, and PostgreSQL, with experience integrating AI features using OpenAI APIs. Focused on structured AI outputs, safety/moderation fallbacks, and secure authentication/authorization. Delivered measurable improvements in user onboarding and iteration speed.…

Available to hire

Software engineer specializing in React, Next.js, TypeScript, and PostgreSQL, with experience integrating AI features using OpenAI APIs. Focused on structured AI outputs, safety/moderation fallbacks, and secure authentication/authorization. Delivered measurable improvements in user onboarding and iteration speed.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Language

Work Experience

Senior AI Full-Stack Engineer at Accenture

May 1, 2024 - Present

Architected an AI-enabled platform using React/Next.js, Node.js, PostgreSQL, and the OpenAI API serving 40,000+ user profiles. Integrated structured AI outputs with business rules, schema validation, prompt versioning, moderation, and safe fallback responses. Converted lengthy guidance into concise, mobile-friendly workflows and improved completion outcomes by 8%. Secured authentication and sensitive data using OIDC, MFA, RBAC, and encryption at rest and in transit. Established reliability practices with monitoring and rollback controls to sustain 99.9% availability.

Senior Full-Stack Developer – AI Applications at OCELOT CONSULTING

March 1, 2022 - May 1, 2024

Built Next.js applications to generate personalization-driven responses, including configurable rule-based AI experiences. Designed systems for action/rule execution, durations, and explainable, guided behavior. Developed onboarding and progress features such as notes, progress summaries, recurring insights, and streamlined user experiences. Implemented security for data via Supabase Storage with validation and encryption. Improved request performance and accelerated delivery through prototypes, stakeholder demos, and shorter iteration cycles.

Software Engineer – Secure Web Platforms at KNOWINK

July 1, 2021 - March 1, 2022

Developed high-volume voter-services web applications using React and TypeScript. Hardened user accounts and APIs with validation, encrypted communication, and least-privilege access. Optimized response times and reduced time-to-load by 35% across desktop and mobile. Automated regression coverage through logging, monitoring, and alerting to improve reliability and availability.

Full-Stack Software Engineer at ENVISIONSt. Louis, MO (company name formatting partially obfuscated)

September 1, 2019 - July 1, 2021

Launched a React and Node.js customer portal for profile intake, personal notes, and progress tracking. Implemented multi-step dynamic forms with validation, autosave, and access control. Modeled PostgreSQL schemas for accounts, responses, recommendations, and uploaded assets. Enabled secure Amazon S3 uploads via presigned URLs with MIME-type validation and retention policies. Improved release quality with automated tests and CloudWatch monitoring, reducing defects by 29%.

Full-Stack Application Developer at BAYER CROP SCIENCE

March 1, 2019 - September 1, 2019

Produced React and Node.js decision-support tools converting structured business rules into tailored responses. Developed calibrated query logic for generating content-driven workflows. Implemented validation to ensure only approved inputs were processed, improving safety and correctness. Deployed containerized AWS services with centralized logging, alerts, and recovery procedures.

Full-Stack Technology Consultant at DAUGHERTY BUSINESS SOLUTIONS

July 1, 2016 - March 1, 2019

Led delivery of enterprise applications using AWS, Node.js, REST APIs, PostgreSQL, and CI/CD. Automated workflows to reduce manual execution and improve data handling. Built reusable business logic and security components including support for RBAC-like controls. Implemented health checks, automated deployment, monitoring, and rollback support. Collaborated with clients, product owners, and stakeholders on architecture and requirements.

Full-Stack Developer at TDK TECHNOLOGIES, LLC (Saint Louis formatting partially obfuscated)

February 1, 2015 - July 1, 2016

Constructed responsive web catalog and workflow-related interfaces using React and JavaScript. Built reusable form components for multi-step data entry flows with robust validation and access interaction. Connected frontend applications to backend databases, reducing data entry workflow time by 25%. Strengthened security using validation, authentication, encrypted transport, and secure coding practices. Improved reliability through automated tests and structured problem-solving processes.

Web Application Developer – Life Sciences at ASSAYPRO

October 1, 2014 - February 1, 2015

Developed an evidence/documentation portal for scientific workflows and structured documentation. Organized and evaluated clinical/simulation data and improved accessibility and usefulness by 26%. Implemented secure input validation and safe database practices for life-science-related content. Collaborated with scientific stakeholders to turn complex materials into working features.

Software Developer Intern at CSI LEASING

June 1, 2014 - August 1, 2014

Programmed JavaScript-driven workflow management features and automated common processes, improving efficiency by 18%. Resolved application and database defects using testing and careful troubleshooting. Documented data mapping and supported testing and documentation activities.