Hello, I am

Kurt Geminic Bautista

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About Me

I’m a senior full-stack software engineer with 10+ years of experience building, improving, and maintaining production software for startups, businesses, and client teams. About →

Over the years, I’ve worked across the full development lifecycle—from understanding requirements and designing technical solutions to building features, integrating APIs, debugging production issues, and maintaining applications after launch. I’ve also worked closely with product, design, and engineering teams and have taken technical leadership roles when projects required it.

Since 2023, I’ve also been working closely with a long-term development partner on different client and product projects. Because each project has different requirements, I’ve had the opportunity to work across a wide range of technologies, including JavaScript, TypeScript, React, Node.js, PHP, Python, Java, C#/.NET, SQL, REST APIs, and mobile/iOS development.

I enjoy working on challenging problems, especially when I need to step into an existing codebase, understand how everything fits together, find the real source of an issue, and make a solution that is reliable and maintainable.

I’m comfortable working independently, collaborating with other engineers, and adapting to different teams, codebases, and technology stacks. My focus is always the same: understand the problem clearly, choose a practical solution, and build software that works well in the real world.

Years of Experience

Dev Hours Saved / Month

Faster Analytics Reporting

Junior Developers Mentored

Faster Support Response

Customers on My App Template

Industries Served

WHAT I DO

Skills

Backend & API Engineering

Backend services, REST and GraphQL APIs, business logic, background processing and data pipelines built for reliability.

Full-Stack Development

New applications, internal tools and business apps delivered end to end, from requirements and architecture to deployment.

Frontend & UI Architecture

React, Next.js, Angular and Vue interfaces, reusable component libraries and internal design systems.

Mobile Development

iOS apps with Swift, SwiftUI and UIKit, React Native, and reusable mobile app templates backed by solid APIs.

Cloud & DevOps

AWS, Azure and Google Cloud, Docker, Kubernetes, and CI/CD with Jenkins, GitHub Actions and Azure DevOps.

Databases & Data

PostgreSQL, MySQL, SQL Server, MongoDB, DynamoDB and Redis: data modeling, query optimization and data integrity.

Architecture & Distributed Systems

System design, microservices, event-driven and high-availability systems, caching, queues and clean architecture.

Testing & Quality

Unit, integration, end-to-end and API testing with Jest, Mocha, Cypress, Playwright and Selenium; TDD and code reviews.

Security

Authentication and authorization, OAuth 2.0 and JWT, secure API design, access control and data validation.

AI & Automation

LLM and AI API integration, chatbots and AI agents, and workflow, API and business process automation.

Problem Solving

Production issues, integration and API failures, performance problems and difficult debugging, traced to the root cause.

Technical Leadership

Technical planning, architecture reviews, code reviews, feature ownership and mentoring developers.

My Resume

Experience & Education

My Experience

Senior Full-Stack Engineer / Technical Partner · Independent Software Development / Partner Projects

Dec 2023 - Present

Works closely with a long-term development partner on a variety of client and product development projects, contributing across the full software development lifecycle from requirements and architecture through development, debugging, deployment, and ongoing maintenance.
Works across different projects and technology stacks depending on client requirements, including JavaScript, TypeScript, React, Node.js, PHP, Python, Java, C#, .NET, SQL, REST APIs, mobile development, and iOS.
Takes responsibility for understanding project requirements, evaluating technical approaches, implementing features, troubleshooting difficult issues, and delivering production-ready solutions.
Frequently works in existing codebases, quickly understanding the system, identifying the real source of a problem, and making changes without disrupting existing functionality.
Collaborates directly with the development partner to divide technical responsibilities, review implementation decisions, troubleshoot complex problems, and move projects forward efficiently.
Builds and maintains full-stack web applications and backend services using JavaScript, TypeScript, Node.js, PHP, Python, Java, and C#/.NET.
Develops and integrates REST APIs, database systems, authentication, business logic, and third-party services.
Works with frontend technologies including React and modern JavaScript/TypeScript applications.
Contributes to mobile application development, including iOS-related development and integration work.
Debugs production issues across frontend, backend, database, API, and application layers.
Reviews existing systems and refactors or improves code when performance, reliability, or maintainability becomes an issue.
Works with SQL and relational databases as well as different data and backend technologies depending on the project.
Takes existing requirements or incomplete specifications and turns them into practical technical solutions.
Supports deployments, releases, maintenance, and ongoing improvements after the initial development work is complete.
Works independently while communicating closely with the development partner and other project stakeholders to keep development moving.
Adapts quickly between different architectures, frameworks, databases, and development environments rather than being tied to a single framework or product.

Key Areas

Full-Stack DevelopmentJavaScriptTypeScriptReactNode.jsPHPPythonJavaC# / .NETSQLREST APIsAPI IntegrationAuthenticationMobile / iOSDebuggingRefactoringDeployment & MaintenanceTechnical Partnership

Senior Software Engineer · Squareflo

Sep 2023 - Sep 2025

Built RESTful APIs with other engineers that improved internal analytics reporting performance by about 20%.
Contributed reusable components to the internal UI library, saving about 200 hours of development time per month.
Redesigned and optimized the UI of an internal customer-support application, improving support response speed by about 8%.
Built a reusable mobile app template for order and delivery businesses, later used for 3 customers in the industry.
Designed reliable, maintainable backend functionality for internal operations and analytics, and worked with product stakeholders to turn workflows and requirements into practical solutions.
Mentored 3 junior frontend developers on React, coding practices and internal standards, and reviewed implementation approaches across the team.

Key Areas

TypeScriptReactNode.jsREST APIsUI LibrariesMobile TemplatesAWSMentoringCode Review

Senior Full-Stack Engineer · Stanza

Jan 2020 - Aug 2023

Designed and built new StanzaPlus features end to end, including add-to-calendar workflows and third-party integrations.
Delivered complete features across frontend and backend, working closely with product managers and designers on intuitive, user-friendly interfaces.
Contributed to product planning and the roadmap, turning requirements into technical implementation plans.
Evaluated emerging frontend technologies and frameworks, adopting them where they added practical value.
Kept the codebase consistent and maintainable through code reviews, development standards and ongoing improvements to the architecture and development process.

Key Areas

TypeScriptReactNode.jsREST APIsThird-Party IntegrationsFrontend ArchitectureProduct PlanningCode Review

Software Engineer / Freelance · Toptal

Jul 2015 - Dec 2019

Delivered custom software for clients in healthcare, e-commerce and retail, on agreed timelines and budgets.
Worked directly with clients to understand their requirements and priorities, then designed solutions that fit each client's architecture and processes.
Collaborated with product managers, designers, QA and other engineers using Agile practices: sprint planning, backlog grooming, stand-ups and iterative delivery.
Improved code quality and maintainability through code reviews and best practices, and resolved functional and performance issues.
Kept clients informed with regular updates on progress, risks and technical decisions, and managed changing requirements without losing focus on delivery.

Key Areas

JavaScriptTypeScriptNode.jsREST APIsDatabasesAutomated TestingAgileClient Communication

My Education

Bachelor of Science in Computer Engineering

Jul 2015

University of the Philippines Diliman · Diliman, Quezon City

Languages

English

Professional Working Proficiency

Filipino

Native / Fluent

Technical Leadership & Mentoring

Experienced in helping other developers improve both technical skills and engineering practices.

Mentoring junior and mid-level developers
React and frontend mentoring
Code review and technical feedback
Teaching coding standards
Architecture discussions
Debugging assistance
Technical problem solving
Knowledge sharing
Pair programming
Development best practices
Helping developers understand existing systems
Breaking complex problems into manageable technical tasks
Reviewing implementation approaches
Supporting developers during difficult technical issues
Encouraging maintainable and reusable solutions

Working Style

Comfortable owning a project or feature from requirements through delivery.
Comfortable working independently without requiring constant supervision.
Comfortable collaborating with senior engineers and technical leads.
Able to communicate technical concepts clearly to non-technical stakeholders.
Practical approach to architecture and engineering decisions.
Focused on solving the actual business problem rather than over-engineering solutions.
Comfortable working with changing requirements and priorities.
Strong preference for maintainable, reusable, and reliable software.
Comfortable investigating unfamiliar systems and learning new technologies when required.
Experienced working remotely with distributed teams and clients.
Focused on delivering measurable improvements rather than simply completing assigned tasks.

Coding Skills

Languages

TypeScriptJavaScriptPythonJavaC#PHPGoRubySQL

Frontend

ReactNext.jsAngularVue.jsReduxHTML5 & CSS3Responsive DesignDesign Systems

Backend & APIs

Node.jsExpress.jsASP.NET CoreSpring BootRuby on RailsRESTGraphQLOpenAPI / SwaggerOAuth 2.0 & JWTWebhooks

Mobile

SwiftSwiftUIUIKitObjective-CReact NativeXcode

Databases

PostgreSQLMySQLSQL ServerMongoDBDynamoDBRedis

Cloud

AWSLambdaEC2S3API GatewayCloudWatchAzureGoogle Cloud

DevOps & Tooling

DockerKubernetesGitHub ActionsJenkinsAzure DevOpsGitBash

Testing

JestMochaCypressPlaywrightSeleniumTDD

AI & Automation

LLM APIsAI AgentsChatbotsWorkflow Automation

Kurt Geminic Bautista

About Me