Senior Full-Stack Software Engineer

Kelvin Del Monte

Senior full-stack engineer and technical leader with 18+ years architecting scalable platforms that power millions of users.

I help organizations drive critical missions via technical initiatives, solve complex problems, and deliver solutions that drive business outcomes.

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AI-enabled engineering

Engineering is evolving

The landscape of software development is shifting. AI isn't replacing engineers, it's amplifying what we can build. I've been using LLMs to assist in development since 2022, integrating tools like Cursor, Codex, Claude Code, OpenAI API, and n8n into my workflows to accelerate delivery, improve code quality, and deliver solutions faster than ever before.

Beyond using these tools in my development workflow, since the emergence of LLMs I have learned to integrate them directly into the software I build when they're the right tool for the job. I see them as architectural components that can solve problems in ways traditional code cannot. I have learned to build systems where LLMs maintain context across conversations, orchestrate workflows autonomously, and coordinate with other agents to accomplish complex tasks. This enables me to create intelligent systems where LLMs are first-class citizens in the architecture, not just external APIs.

See my experience

Experience

Building software that scales

Roles across e-commerce, payroll, and federal platforms

Indicates a key highlight for each role

HeroDevs

Current

Senior Solutions Engineer

2024 - Present

Designed and launched a product request pipeline that allows customers to request new products not in the company's repertoire, enabling the company to investigate, track, manage, and deliver these products to generate revenue, producing over $1.35 million in revenue in 8 months where previously this money was being left on the table.

Transferred to the sales and product team working on Never Ending Support (NES), a software product that provides long-term support for end-of-life technologies, going from beginner to subject-matter expert in the product offering.
Became the go-to person for automating manual processes using AI, with work impacting sales, engineering, and product teams across the organization.
Through pioneering AI-powered processes and automations, contributed to the company's broader embrace of AI tools and automation across teams.
Designed and launched a product request pipeline that allows customers to request new products not in the company's repertoire, enabling the company to investigate, track, manage, and deliver these products to generate revenue, producing over $1.35 million in revenue in 8 months where previously this money was being left on the table.
Created an AI-powered Technology Usage Tracking process that analyzes multiple data sources including dependency files, customer surveys, and client call transcripts to classify and count technologies seen in customer environments, providing the product team with valuable insights about customer technology usage and generating leads for future product launches, where previously they had little to no visibility into this data.
Developed an automated dependency analysis process that allows handling most incoming requests independently, saving valuable engineering time and helping serve more customers.
Established credibility and secured leadership approval to build software initiatives that align with company goals, originally operating as a one-person department and building structure from the ground up, now growing the department with a recent hire and creating an onboarding process for new solutions engineers to pave the way for continued growth.

Next.jsNest.jsBullMQOpenAI Assistants APIOpenAI Responses APIn8nCursorClaude CodeCodexMongoDBDomoSalesforceHubSpotSlack WorkflowsAsana

HeroDevs

Senior Software Engineer

2022 - 2024

Led modernization projects for clients, including a major engagement with Santander Bank to port a .NET Windows Forms application to modern Angular and migrate services from a monolithic approach to modern REST applications.

Worked on the Professional Services (consulting) team, helping enterprise clients modernize their legacy applications and architectures.
Led multiple modernization projects, helping clients transition from AngularJS to modern Angular frameworks.
Led a major project for Santander Bank, porting a .NET Windows Forms desktop application to modern Angular web application and migrating backend services from a monolithic architecture to modern REST APIs.
Delivered modernization solutions that helped clients transition from legacy technologies to modern, maintainable architectures.

AngularAngularJS.NETREST APIsWindows Forms

AutoZone

Senior Software Engineer & Tech Lead

2019 - 2021

Built an automated release validation tool that compared release branches to main, validated commits against JIRA tickets, and enforced conventional commits, eliminating unauthorized commits that had cost the company thousands of dollars and receiving immediate company-wide adoption.

Worked on the front-end engineering team for autozone.com, developing various parts of the application that are live today using React and Redux for state management.
In initial months, revamped user authentication and sessions, owning and solving a complex technical challenge that led to recognition and promotion to technical lead of the Commerce pod.
Served as technical lead of the Commerce pod, a team of 6 engineers responsible for all e-commerce pages and components, including product selection and checkout functionality.
Participated in leadership team discussions and round table meetings for coordinating and approving releases, making GO or NO GO decisions for the Commerce pod.
Integrated Oracle e-commerce tools for feature flags and internationalization across the platform.
Built an automated release validation tool that compared release branches to main, listed new commits, used the JIRA API to validate commit references against stories, checked ticket metadata, verified release approval status, and enforced conventional commits.
The release validation tool eliminated unauthorized commits creeping into releases that had cost the company thousands of dollars in the past and received immediate company-wide adoption.

ReactReduxNode.jsOracle E-commerceJIRA APIGit

Better Business Bureau

Senior Software Engineer

2018 - 2021

Led performance optimization for bbb.org, methodically improving site performance and developing Radar, an internal system that monitored each release and provided comprehensive performance reports using Lighthouse, which was bleeding-edge technology at the time.

Helped create much of the bbb.org site that is live and operational today, working across lead generation pages, category pages, and complaint pages.
Led performance optimization initiatives for bbb.org, methodically improving site performance and establishing performance monitoring practices.
Developed Radar, an internal system that monitored each release and provided comprehensive performance reports using Lighthouse, which was bleeding-edge technology at the time.
Built the search algorithm and implemented indexing of searchable records using Solr for efficient search functionality across the platform.

React.NETC#SolrSQL Server

Bond Pro

Software Engineering Technical Lead

2016 - 2018

Rearchitected the Next Gen AngularJS application from a single monolithic JavaScript file with 30+ second load times to a route-based code-split architecture, achieving 200ms initial load time, a 150x performance improvement.

Led front-end engineering for the Next Gen AngularJS web application, transforming a monolithic single-file architecture into a modular, route-based code-split system.
Reduced initial application load time from 30+ seconds to 200ms through strategic rearchitecture and route-based code splitting, delivering a 150x performance improvement.
Led full-stack engineering initiatives, guiding the team to implement several modules that integrated front-end and back-end components.
Modernized the entire build system with Webpack and improved the developer setup, streamlining the development workflow and build processes.
Modularized the front-end codebase into small, manageable components, establishing clear separation of concerns and improving maintainability.
Led the company-wide initiative to standardize and document component architecture, coding standards, and maintenance practices for the engineering team.

AngularJSJavaScriptWebpack

Accusoft

Senior Software Engineer

2015 - 2016

Wrote the front-end search algorithm for PrizmDoc (Yahoo Mail's former PDF viewer) that implemented exact, phrase, case-sensitive, wildcard, and proximity search modes, communicating with the API to display results and enabling users to annotate search hits.

Developed PrizmDoc, the PDF viewer that powered Yahoo Mail, as part of a 5-person front-end team working exclusively with vanilla JavaScript.
Built the front-end search algorithm implementing exact, phrase, case-sensitive, wildcard, and proximity search modes that communicated with the API to perform searches, display all hits, and allow users to annotate results.
Created all annotations using manual SVG manipulation, adhering to strict zero-dependency requirements with no plugins or external libraries allowed.
Rewrote part of the build process to Gulp and authored gulp-multi-dest, a Gulp plugin still in use today on npm.

JavaScriptSVGGulp

OneTouch Direct

Software Engineer → Tech Lead & Engineering Manager

2007 - 2015

Automated a 100+ step manual process that enabled the call center to handle significantly more business, generating millions in additional revenue for the company.

Started as an intern and progressed to Tech Lead and Engineering Manager, wearing all hats and becoming a true full-stack engineer.
Automated a 100+ step manual dialing process, reducing project setup time from 4 hours to 30 minutes and enabling millions in additional revenue.
Built comprehensive internal tools and web applications that streamlined call center operations, including employee management, payroll systems, and call recording platforms.
Architected and delivered 10+ production applications spanning ASP.NET MVC, Node.js, Angular, and SQL Server, serving as the primary technical decision-maker.

.NETASP.NET MVCC#SQL ServerNode.jsSails.jsSocket.IOAngularAngular.jsjQueryBootstrapMaterial DesignEntity FrameworkJavaScript

Contract & Other Work

Additional engagements

Additional contract and project-based engagements

Indicates a key highlight for each role

Kelvin AI

Note: Although my first name matches the company name, I am not the owner of Kelvin AI and this is purely coincidental.

Senior Software Engineer

2023 - 2024

Rewrote the SmartPCP React application within a tight timeline, gathering requirements and specifications to deliver a complete rewrite that enabled the company to secure client contract renewal.

Brought on specifically to rewrite a React application (SmartPCP) that required improvement before a critical contract renewal deadline, gathering all requirements and specifications to deliver a rapid, complete rewrite.
Completed the SmartPCP rewrite on time, enabling the company to secure client recommitment and contract renewal. Read the case study.
Helped the front-end team migrate the Kelvin AI platform from Create React App to Next.js, proposing a migration strategy that ported the entire application as client components first, then incrementally adopted Next.js features.
The incremental migration approach proved to save significant development time and reduce bugs compared to the original plan, which involved rewriting each module to opt in to as many Next.js features as possible from day one, creating more complexity and potential for errors.

ReactNext.jsTypeScriptRecoilJotai

JinnStudios

Senior Software Engineer

2022 - 2023

Led the migration of Heartland's payroll software from an AngularJS and .NET monolith to Angular with a decoupled API and background jobs architecture, while maintaining the existing system during the transition.

Worked as a consultant on various projects for clients, with the largest project being for Heartland, a payroll software company.
Maintained and evolved Heartland's payroll platform built with AngularJS and .NET monolith while simultaneously porting the application to modern architecture.
Migrated the application from AngularJS to Angular, decoupling the API and implementing background jobs to improve scalability and maintainability.

AngularAngularJS.NETSQL ServerNUnitMSTest

Mercury Works

Software Engineer

2022 - 2023

Built a full-stack datatable/grid component that made it easy to spin up data tables within the infrastructure, turning hours of repetitive work into minutes of plug-and-play configuration.

Contracted with a consulting firm that builds internal tools for businesses, working on various projects using React for the front-end and .NET for the back-end.
Built a full-stack datatable/grid component with sorting, filtering, column customization, and other features that streamlined data table creation, reducing setup time from several hours to minutes through plug-and-play configuration.
Helped set up feature flags across multiple projects using LaunchDarkly to enable safer deployments and feature rollouts.

React.NETLaunchDarkly

Thinkbean

Senior Software Engineer & Tech Lead

2021 - 2022

Led a 6-person team, with myself being the only senior engineer, to build ExpertSession, a fully functional, monetizable expert consultation platform, in under a year, serving as technical lead, primary engineer, engineering manager, project manager, and scrum master.

Led a 6-person team to build ExpertSession, a platform connecting users with experts for paid consultation sessions, architected and delivered in under a year as a blitz effort.
Served as technical lead, primary software engineer, engineering manager, project manager, and scrum master, handling both front-end and back-end engineering responsibilities.
Architected the entire system including React front-end, Express API, MongoDB database, Elasticsearch search engine, AWS Chime for meetings and recordings, Stripe payments, and a multi-channel notification system (email, SMS, push, in-app).
Built a fully functional React Native mobile application and implemented end-to-end testing using Cucumber.
Delivered an operational, monetizable application by the time of departure, demonstrating ability to lead small teams and ship complex products rapidly.

ReactExpress.jsMongoDBElasticsearchAWS ChimeStripeReact NativeCucumberNode.js

SemanticBits

Senior Software Engineer

2019 - 2020

Built a Superset chart diff tool that automated chart definition migrations between environments, revolutionizing team workflows by eliminating days of manual work and enabling change promotion, management, and rollback capabilities.

Worked on multiple health-related projects for the United States government, handling private patient data (PHI) across federal health initiatives.
Developed front-end features using React with Apache Superset as the backend for chart data organization, building custom D3 visualizations to meet client design requirements and overcome Superset's poor user experience.
Built a Superset chart diff tool that automated chart definition migrations between environments, eliminating days of manual work and providing git-like functionality for change promotion, management, and rollback.
Transferred to the Health API team, powering fundamental health APIs for the US government using Nest.js, where I helped establish automatic data migrations and data seeds for local environments.
Helped establish standards and guidelines for API security and implementation practices across the Health API team.

ReactNest.jsApache SupersetD3.jsNode.js

Capabilities

Full-stack expertise

Languages, frameworks, platforms, and tools

Frontend

ReactNext.jsTypeScriptJavaScriptHTMLCSSTailwindStyled ComponentsSassLessBootstrapMaterial UIjQueryAngularAngularJSVueReact NativeReduxWebpackVite

Backend

Node.jsNest.jsExpress.jsFastifySocket.ioGraphQLPrismaTypeORMBullMQRabbitMQPythonC#.NETEntity FrameworkSignalRgRPCSwaggerOAuthApache KafkaRust

Data & Caching

MongoDBRedisMemcachedPostgreSQLMySQLMariaDBSQLiteSQL ServerDynamoDBDocumentDBCassandraFirebaseFirestoreElasticSearchSolrRDSElastiCacheSuperset

DevOps

AWSDigital OceanAzureGCPHerokuVercelPlatform.shDockerKubernetesHelmGitHubGitHub ActionsJenkinsTerraformGitLab CI/CDAWS CodePipelineAzure DevOps

Testing

JestVitestCypressPlaywrightReact Testing LibraryMochaChaiSinonSupertestMSWpytestunittestxUnitNUnitMSTestMoqPostmanInsomniaArtillery

Project Management

GitGitHubAgileScrumJIRAAsanaTrelloMonday.comConfluenceNotion

AI

CursorClaude CodeCodexOpenAI APIMCP API ArchitectureContext EngineeringTask ArchitectureMCP IntegrationAutonomy DesignMulti Agent CoordinationCognitive Load Balancingn8n

Web3 & Blockchain

Solana@solana/web3.js@solana/kitSolana Wallet AdapterAnchorSPL TokenMetaplexSolana CLIRPCsTransaction OptimizationBlockchain ExplorersTokenization

Web3 & Blockchain

See my experience building on Solana

Decentralized applications, smart contracts, and blockchain infrastructure

Education

2009 - 2012

University of South Florida

Software Engineering · Tampa, FL

2008 - 2009

Hillsborough Community College

Software Engineering · Tampa, FL

References

Available upon request.

Let's work together

Interested in collaborating or have a project in mind? I'd love to hear from you.

Email Me