JNM

Full Stack Developer

Jarmaine Neil Mojica

Building products that connect polished UI, reliable APIs, and cloud-ready infrastructure.

I design and develop end-to-end web systems across modern frontend frameworks, scalable backend services, database architecture, test automation, and DevOps workflows.

View Projects Explore Stack
  • 6+ Years building production web apps
  • 35+ Features shipped from concept to launch
  • 99.9% Reliability targets on critical workflows
  • 15+ CI/CD and automation pipelines delivered
Portrait of Jarmaine Neil Mojica

What I Do

End-to-end feature development from UX implementation to API design, data modeling, CI/CD pipelines, and cloud deployment.

  • Architect scalable frontend and backend modules for long-term maintainability.
  • Design secure APIs, data contracts, and integration workflows across services.
  • Deliver production-ready releases with monitoring and rollback strategies.

How I Work

Build fast, test early, automate everything possible, and keep systems observable and maintainable.

  • Break large roadmaps into milestones with measurable technical outcomes.
  • Use test gates, code review standards, and CI checks to reduce regressions.
  • Document architecture decisions so teams can scale implementation confidently.

Focus Areas

Product engineering, platform reliability, cloud architecture, and developer productivity.

  • Enterprise dashboards, internal platforms, and SaaS workflow systems.
  • Cloud cost optimization, observability, and performance tuning.
  • Automation patterns that increase release speed and team velocity.

Professional Journey

Experience Highlights

Senior Full Stack Developer

Product & Platform Team · 2023 - Present

Lead architecture and delivery for customer-facing applications and internal engineering platforms used by cross-functional teams.

  • Redesigned the core service architecture to improve deployment confidence and observability.
  • Implemented role-based data access and audit logging for enterprise compliance requirements.
  • Mentored engineers on code quality standards, API design, and release process improvements.

Full Stack Engineer

SaaS Solutions Group · 2020 - 2023

Built and maintained multi-tenant features across web apps, APIs, and deployment pipelines supporting high-growth product lines.

  • Delivered billing, subscription, and reporting modules integrated with third-party systems.
  • Developed automated test coverage and CI validation to reduce production defects.
  • Introduced containerized development workflows for faster onboarding and consistency.

Software Engineer

Web Applications Team · 2018 - 2020

Contributed to full-stack delivery of business-critical web products focused on reliability, usability, and maintainable growth.

  • Created reusable UI components and API endpoints used across multiple product modules.
  • Optimized SQL queries and caching strategies for better response times under load.
  • Partnered with QA and product teams to improve sprint predictability and release quality.

Technology Matrix

Core Stack and Tools

Frontend

  • React
  • Vue
  • Angular
  • TypeScript
  • JavaScript (ES6+)
  • HTML5 / CSS3
  • Tailwind CSS
  • Vite / Webpack

Backend

  • Node.js
  • Express.js
  • NestJS
  • REST / GraphQL APIs
  • WebSockets
  • Auth (JWT, OAuth2)

Python + Main Frameworks

  • Python
  • Django
  • Flask
  • FastAPI
  • Celery
  • Pydantic

.NET / C#

  • C#
  • .NET
  • ASP.NET Core
  • Blazor
  • Entity Framework Core
  • xUnit / NUnit

SQL Databases

  • PostgreSQL
  • MySQL
  • Microsoft SQL Server
  • SQLite
  • Oracle Database

NoSQL Databases

  • MongoDB
  • Redis
  • Amazon DynamoDB
  • Cassandra
  • Elasticsearch
  • Firebase Firestore

Unit Testing Tools

  • Jest
  • Vitest
  • Mocha / Chai
  • Pytest
  • unittest
  • xUnit / NUnit
  • JUnit

Cloud Platforms

  • AWS
  • Microsoft Azure
  • Google Cloud Platform
  • Cloudflare
  • Vercel
  • Netlify

DevOps + AWS Services

  • Docker
  • Kubernetes
  • Terraform
  • GitHub Actions / GitLab CI
  • Jenkins
  • ArgoCD
  • AWS EC2 / ECS / EKS
  • AWS Lambda / API Gateway
  • AWS S3 / RDS / DynamoDB
  • AWS CloudFront / Route 53 / IAM
  • AWS CloudWatch / SNS / SQS
  • Prometheus / Grafana

What I Deliver

Services and Delivery Scope

Product Engineering

End-to-end feature development for web products, from UX-ready interfaces to robust APIs and scalable data models.

  • Frontend architecture and reusable component systems.
  • Backend services, authentication, and business workflows.
  • Database design, migration strategy, and query optimization.

Cloud and DevOps

Infrastructure and release pipeline setup that improves reliability, security posture, and delivery velocity.

  • Containerization, orchestration, and infrastructure as code.
  • CI/CD pipeline implementation with quality and deployment gates.
  • Monitoring, alerting, and incident-ready observability workflows.

Quality and Team Enablement

Engineering practices that increase confidence in releases and help teams scale delivery with fewer regressions.

  • Testing strategy across unit, integration, and API validation.
  • Code review standards, documentation, and technical onboarding.
  • Delivery planning, risk tracking, and cross-team collaboration support.

Selected Work

Featured Project Directions

Real analytics dashboard shown on a laptop screen

Enterprise Dashboard Suite

Modular React + Node/NestJS platform with role-based access, data visualization, and analytics APIs.

Duration: 8 months · Team: 6 engineers · Domain: Enterprise Analytics

  • Built a modular dashboard shell with dynamic widgets and permission-aware navigation.
  • Implemented KPI pipelines and API aggregation layers for near real-time reporting.
  • Improved deployment quality using automated smoke tests and rollback-ready releases.
  • React
  • NestJS
  • PostgreSQL
  • Docker
Cloud infrastructure and backend server environment

Multi-Tenant SaaS Backend

FastAPI and ASP.NET Core microservices with PostgreSQL, Redis caching, event queues, and full CI/CD.

Duration: 10 months · Team: 8 engineers · Domain: B2B SaaS

  • Designed tenant isolation and access policies across API gateway and service boundaries.
  • Integrated asynchronous jobs for billing, reporting, and lifecycle notification workflows.
  • Reduced release friction with automated schema checks and environment parity tooling.
  • FastAPI
  • ASP.NET Core
  • Redis
  • GitHub Actions
Real-world e-commerce shopping and checkout scene

Cloud-Native Commerce Platform

Angular storefront + Express API with Kubernetes deployments, IaC via Terraform, and AWS observability.

Duration: 7 months · Team: 5 engineers · Domain: E-commerce

  • Delivered storefront performance improvements for product discovery and checkout experience.
  • Implemented infrastructure templates to standardize staging and production environments.
  • Added operational dashboards and alerting to improve incident response time.
  • Angular
  • Express
  • Kubernetes
  • AWS

Continuous Growth

Certifications and Learning Focus

Cloud and Infrastructure

Ongoing specialization in designing resilient cloud systems and secure deployment patterns.

  • AWS architecture best practices and service design.
  • Container security and runtime reliability standards.
  • Infrastructure-as-code workflows for repeatable environments.

Application Architecture

Continuous study of scalable application design across modern frontend and backend ecosystems.

  • Domain-driven service decomposition and API governance.
  • Performance tuning for web rendering and database layers.
  • Testing architecture for confidence in iterative releases.

Leadership and Delivery

Improving team effectiveness through engineering practices, mentorship, and process clarity.

  • Code quality standards and practical review systems.
  • Release planning, risk management, and handoff quality.
  • Collaboration rituals for product, design, and QA alignment.