Senior Full-Stack Engineer: Python, React, Cloud & AI

Phizenix; Reston (VA); Hybrid; USD 120,000 - 140,000; Full time

Job summary

Phizenix in Reston, VA is seeking a senior software developer to design, build, test, and deploy scalable web applications using Python, React.js, Java/Spring Boot, PostgreSQL, NoSQL databases, and AWS. You will work in a cross-functional Agile team to deliver robust client solutions.

The role requires 5+ years in backend and frontend development, microservices experience, cloud familiarity, and strong communication. Hybrid schedule with some client‑site work in the DC area is expected.

Qualifications

• Bachelor's Degree in Computer Science, Engineering, Information Technology, or a related technical field.
• 5+ years of professional software development experience.
• 5+ years of hands-on backend development experience using Python.
• 5+ years of hands-on frontend development experience using React.js.
• Hands-on experience developing applications using Java and Spring Boot.
• Experience designing and developing microservices-based architectures.
• Experience working with relational databases such as PostgreSQL, SQL Server, or Oracle.
• Experience working with NoSQL databases such as MongoDB or DynamoDB.
• Familiarity with AWS services including S3, EC2, Lambda, SQS, and RDS.
• Experience working within Agile frameworks such as Scrum or Kanban.
• Experience using JIRA for project and task management.
• Proficiency in creating accurate estimates for assigned tasks and work efforts.
• Strong understanding of object‑oriented programming, design patterns, database design, and data modeling.
• Strong analytical, troubleshooting, and problem-solving skills.
• Excellent communication skills with the ability to interact directly with non-technical client stakeholders and translate business requirements into technical solutions.
• Experience using AI-assisted development tools such as GitHub Copilot for code generation, review, validation, and development workflow optimization.

Responsibilities

• Design, develop, and implement Python-based enterprise solutions that meet client requirements.
• Build, test, deploy, and maintain scalable web applications and services.
• Collaborate as a member of a cross-functional Agile team to deliver software solutions aligned with business objectives.
• Support quality development practices, including test-driven development and automated testing.
• Apply Agile development principles and DevSecOps best practices throughout the software development lifecycle.
• Participate in and contribute to code reviews to improve code quality, maintainability, and performance.
• Evaluate technical requirements and contribute to user story creation, estimation, and implementation planning.
• Participate in Agile ceremonies including sprint planning, daily standups, retrospectives, and backlog refinement sessions.
• Create and maintain technical documentation, system designs, and application architecture artifacts.
• Develop applications using object-oriented methodologies, design patterns, microservices, databases, and modern web technologies.
• Collaborate with technical and non-technical stakeholders to gather requirements and deliver effective solutions.
• Develop and maintain cloud-based applications and services utilizing AWS technologies.
• Troubleshoot, debug, and resolve application, integration, and performance issues.
• Utilize AI-assisted development tools, including GitHub Copilot, to generate, review, validate, and optimize code and development workflows.
• Provide accurate estimates for assigned tasks and manage deliverables within project timelines.

Skills

Python

React.js

Java/Spring Boot

PostgreSQL

NoSQL

AWS

Agile

JIRA

GitHub Copilot

OOP

Data modeling

Communication

Education

Bachelor's degree in Computer Science/Engineering/IT

Tools

MongoDB

DynamoDB

SQL Server

Oracle

Job description

Phizenix in Reston, VA is seeking a senior software developer to design, build, test, and deploy scalable web applications using Python, React.js, Java/Spring Boot, PostgreSQL, NoSQL databases, and AWS. You will work in a cross-functional Agile team to deliver robust client solutions.

The role requires 5+ years in backend and frontend development, microservices experience, cloud familiarity, and strong communication. Hybrid schedule with some client‑site work in the DC area is expected.