Lima, Peru

Sebastian Garcia

Portrait of Sebastian Garcia

Building the future

Engineer specialized in AI-powered architectures and cross-platform development. Experienced in LangChain, .NET/Python services, and React Native apps deployed on AWS, Azure, and GCP for scalable, cost-efficient performance.

Start a project
LinkedInDownload CV

Cloud Strategy

AWS · Azure · Google Cloud

Design applications end-to-end and tailor infrastructure, pricing, and governance to match each product’s scale and budget.

AI Builder

LangChain · RAG · ML

Craft retrieval-augmented assistants, domain copilots, and ML-powered analytics that plug into live workflows and scale globally.

Cross-Platform

Web · Mobile · Desktop

Ship full-stack experiences with Next.js, .NET, and React Native—optimized for accessibility, performance, and growth.

Technology Ecosystem

C#
.NET
TypeScript
Python
React
Next.js
NestJS
FastAPI
LangChain
TensorFlow
PostgreSQL
SQL Server
DynamoDB
Azure
AWS
Google Cloud
Docker
Firebase
Git
TeamCity
Power BI
C#
.NET
TypeScript
Python
React
Next.js
NestJS
FastAPI
LangChain
TensorFlow
PostgreSQL
SQL Server
DynamoDB
Azure
AWS
Google Cloud
Docker
Firebase
Git
TeamCity
Power BI

Projects

Product initiatives I’ve led end-to-end

Beyond client engagements, I prototype platforms that blend human-centered design with AI and cloud infrastructure to unlock measurable outcomes.

Autism Screening Suite

Created a clinician-facing assessment platform that guides early autism screenings, captures structured responses, and runs Python analytics to surface behavioral risk markers.

Stack

Next.jsTypeScript.NETPythonAWS

Deployed with pediatric specialists to speed preliminary evaluations and support data-driven follow-up plans.

Pediatric Monitoring

Developed a pediatric anemia monitoring app that captures parent and newborn data at birth, then guides monthly screenings to log hemoglobin levels and track anemia risk.

Stack

ReactNext.js.NETPythonAWS

Helps pediatric teams record ongoing hemoglobin measurements, surface early anemia indicators, and coordinate timely interventions for each child.

Adaptive Exam Coach

Designed a learning hub where I curate certification topics, ingest documentation, and auto-generate exam-style questions using retrieval-augmented generation for spaced practice.

Stack

Next.jsTypeScriptLangChainPythonAWS

Used to rehearse AWS solutions architect scenarios with personalized quizzes and mastery analytics.

LexRoute · Legal Intake PWA

Delivered a progressive web app for law firms that profiles client inquiries, detects required specialization, and routes structured briefs to the correct legal team via WhatsApp handoffs.

Stack

Next.jsPWA.NETAzureTwilio

Reduced intake triage time by 60% and ensured measurable response SLAs across segmented practices.

Block Quotations Platform

Engineered a secure quoting portal for the UNACEM blocks division, automating approvals, cost simulations, and analytics pipelines for sales leadership.

Stack

Next.jsAzure.NETPythonJWT

Delivered instant quote generation with authenticated flows and reporting dashboards that replaced spreadsheet workflows.

Autism Screening Suite

Created a clinician-facing assessment platform that guides early autism screenings, captures structured responses, and runs Python analytics to surface behavioral risk markers.

Stack

Next.jsTypeScript.NETPythonAWS

Deployed with pediatric specialists to speed preliminary evaluations and support data-driven follow-up plans.

Pediatric Monitoring

Developed a pediatric anemia monitoring app that captures parent and newborn data at birth, then guides monthly screenings to log hemoglobin levels and track anemia risk.

Stack

ReactNext.js.NETPythonAWS

Helps pediatric teams record ongoing hemoglobin measurements, surface early anemia indicators, and coordinate timely interventions for each child.

Adaptive Exam Coach

Designed a learning hub where I curate certification topics, ingest documentation, and auto-generate exam-style questions using retrieval-augmented generation for spaced practice.

Stack

Next.jsTypeScriptLangChainPythonAWS

Used to rehearse AWS solutions architect scenarios with personalized quizzes and mastery analytics.

LexRoute · Legal Intake PWA

Delivered a progressive web app for law firms that profiles client inquiries, detects required specialization, and routes structured briefs to the correct legal team via WhatsApp handoffs.

Stack

Next.jsPWA.NETAzureTwilio

Reduced intake triage time by 60% and ensured measurable response SLAs across segmented practices.

Block Quotations Platform

Engineered a secure quoting portal for the UNACEM blocks division, automating approvals, cost simulations, and analytics pipelines for sales leadership.

Stack

Next.jsAzure.NETPythonJWT

Delivered instant quote generation with authenticated flows and reporting dashboards that replaced spreadsheet workflows.

Experience

5+ Years

Tranzact · Senior Software Engineer

Sep 2024 → Present

Generative AI · Automation · Cloud Migration

Fort Lee, NJ · Remote

Signature Impact
Led AI-driven automation and cloud migration to AWS at TRANZACT, architecting production RAG pipelines with LangChain using PostgreSQL (pgvector) for semantic search and retrieval-augmented generation, automating internal support and reducing manual ticket volume.
Platform Architecture
Architected AWS cloud infrastructure and Genesys Cloud platform with CI/CD pipelines (TeamCity, Git) and Python automation to support AI workloads and platform reliability.
Scale & Users
Built tz-flows, a configuration tool that serializes complex workflows into reusable YAML recipes, cutting card configuration time by 40%.
Tooling
.NET, LangChain, Python, TypeScript, SQL Server, PostgreSQL (pgvector), AWS, Genesys Cloud, TeamCity, Git

UNACEM · Software Architect

Jul 2021 → Present

Web Platform · Sales Automation

Lima, Peru · Remote

Signature Impact
Architected a cost-optimized serverless platform on AWS (S3 + CloudFront + API Gateway + Lambda + DynamoDB + Step Functions) for a Next.js digital sales platform, automating manual Excel workflows and increasing daily quotations by +67%.
Platform Architecture
Designed dashboards and tracking tools for 20+ executives to manage quotations, technical visits, and follow-ups across the full sales cycle.
Scale & Users
Served as seasonal Software Architect, owning the full lifecycle from architecture to deployment aligned with business goals.
Tooling
Next.js, TypeScript, AWS, PostgreSQL, JWT

Ernst & Young · Software Engineer

Jan 2022 → Aug 2024

Risk Platforms · Data Analytics · Team Leadership

Lima, Peru

Signature Impact
Delivered compliance-ready risk portals that unified .NET, React, and Power BI to automate regulatory reporting for multinational clients.
Platform Architecture
Orchestrated Azure-hosted microservices with Python analytics engines and SQL Server warehouses feeding Power BI dashboards.
Team Leadership
Led agile squads of 3–5 engineers, instituting review rituals, QA automation, and delivery playbooks tailored to regulated industries.
Tooling
.NET, React, Python, Azure, SQL Server, Power BI, Git

Programming Stack

.NET · Python · Clean Architecture · System Design

Languages

C#, TypeScript, Python

Web & Services

.NET, React, Next.js, NestJS, FastAPI, LangChain, GraphQL

Cloud & DevOps

Solutions architecture with AWS, Azure, Google Cloud, Docker, TeamCity, Git, CI/CD, Terraform

AI, Data & Analytics

TensorFlow, OpenAI, embeddings, PostgreSQL, SQL Server, DynamoDB, Power BI

Cross-Platform

React Native, PWA, MSAL/JWT secure auth flows

Next.jsLangChainReact NativeSQL ServerPower BITeamCityDockerAzureAWSGoogle CloudTerraform

Education

Lifelong Learning

  • Apr 2026 – Mar 2028

    Master of Science in Data Science and Artificial Intelligence

    University of Engineering and Technology

    Deep Learning • Big Data • Computer Vision • High-Performance Computing • Machine Learning

  • Jan 2027

    Artificial Intelligence and Data Science Immersion Program

    MIT International Science and Technology Initiatives

    Applied Machine Learning • Computational Modeling • Innovation in Data Science

  • Mar 2018 – Jul 2023

    Bachelor's in Mechatronics Engineering

    Peruvian University of Applied Sciences

    Control Systems • Embedded Programming • Data Analysis • Automation · Research on CNN dataset efficiency for pet identification

Languages & Interests

Languages

English (C2, EF SET 72/100), Spanish (Native)

Interests

Competitive programming, Generative AI agents, Technical communities, System optimization, Emerging tech workshops

Current Focus

Cloud cost governance, LangChain evaluators, clean architecture playbooks for distributed teams

Let's build something impactful

I help global teams automate operations, integrate intelligent assistants, and scale high-performing platforms from concept to production.

Schedule a conversation