Full stack javascript web application developer (ref: 5884)

Position Overview

Estrada Consulting, Inc. is seeking an experienced Senior Software Engineer to design, develop, maintain, and enhance mission-critical web applications for a California public-sector client. The consultant will support the development of custom web-based solutions, system integrations, database operations, business rules and calculations, testing, and technical documentation.

Key Responsibilities:

• Design, develop, and maintain secure, user-friendly, high-performance web applications.
• Develop full-stack functionality, including user interfaces, APIs, and database integrations.
• Integrate applications with existing enterprise systems and data sources.
• Develop complex SQL queries for data conversion, analysis, and reporting.
• Troubleshoot application code and perform edge-case testing based on user requirements.
• Implement configurable business rules, calculations, and data validation processes.
• Support user acceptance testing, defect resolution, and application enhancements.
• Prepare technical documentation and collaborate with technical and business stakeholders.

Mandatory Qualifications:

• MQ1. Minimum four (4) years of demonstrated experience developing and maintaining solutions that: Serve mission-critical applications. Are intuitive and user-friendly, requiring little formal training, with features such as online training, on-screen help, and decentralized account management. Are performance-oriented for fast response.
• MQ2. Minimum four (4) years of experience developing and maintaining web-based solutions.
• MQ3. Minimum four (4) years of experience troubleshooting code and performing edge testing based on user requirements/stories (full stack).
• MQ4. Minimum four (4) years of experience performing complex database queries in Oracle/MS SQL Server for data conversion, data analysis, and visual reporting.
• MQ5. Minimum three (3) years of experience with one or more of the following: JavaScript, TypeScript. Azure DevOps/GitHub. VueJS, React, Angular. HTML and CSS.
• MQ6. Minimum three (3) years of experience with one or more of the following: Oracle SQL. Microsoft SQL Server. MongoDB. REST APIs. Functions, triggers, and stored procedures.

Desirable Qualifications:

• DQ1. Experience integrating PCI-DSS-compliant payment portals into web applications.
• DQ2. Experience using Composition API in VueJS.
• DQ3. Experience with MongoDB, Fastify, ExpressJS, or FeathersJS.
• DQ4. Experience creating MongoDB Aggregation Pipelines with multiple stages.
• DQ5. Familiarity with Linux and Docker images for local development.
• DQ6. Experience with Vuetify or PrimeVue third-party component libraries.
• DQ7. Experience using JavaScript libraries such as PDFMake to create PDF reports.
• DQ8. Experience using Oracle SQL Developer or Microsoft SQL Server Management Studio.
• DQ9. Experience using Visual Studio Code (VSCode).

Additional Requirements:

• Must reside and perform all remote work within the United States.
• Must be available during Pacific Time business hours.
• Must successfully complete required background screening and onboarding procedures.
• Must provide verifiable professional references.