Backend-focused software engineer building scalable SaaS systems with Java, Spring Boot, and PostgreSQL. I enjoy designing clean architectures, working with complex data models, and solving problems at the system level.
- Backend engineer with a focus on scalable system design and database architecture
- Currently building a multi-tenant photography SaaS platform
- Strong interest in performance optimization, data modeling, and backend architecture
- Experience across the stack, with a backend-first mindset
Backend
- Java (Primary), Spring Boot, jOOQ
- REST API design, concurrent processing, transactional systems
Database
- PostgreSQL, Oracle, DynamoDB
- Advanced SQL, JSONB, query optimization, schema design
Cloud & DevOps
- AWS (ECS Fargate, S3, RDS, Lambda, API Gateway)
- Docker
Frontend (when needed)
- TypeScript, React, Next.js
- Multi-tenant platform with role-based access and advanced metadata handling
- jOOQ-based persistence layer with composite keys and keyset pagination
- JSONB-driven schema to reduce joins and improve query performance
- Concurrent upload pipeline with deduplication and transactional integrity
- Designed for AWS deployment using ECS Fargate, RDS, S3, and CloudFront
Serverless employee management system built with AWS Lambda, API Gateway, and DynamoDB, including authentication and role-based access.
Built a data pipeline and relational database to analyze U.S. school funding (2010–2020), with data cleaning, transformation, and visualization.
Previous experience in FinTech, including technical support and process automation. Focused on troubleshooting complex systems and improving operational efficiency through Python-based tooling.
- Backend architecture & system design
- Database design and performance optimization
- Astrophotography & landscape photography
- LinkedIn: Jacob Candelaria
- Contact: jcandelaria.dev/contact