Junior Software Developer

BLN24 is seeking a Junior Software Developer to support NOAA’s modernization of mission-critical weather and data dissemination systems. The role works on an Agile team to review legacy applications and help convert them into secure, event-driven, cloud-native applications on AWS for the National Weather Service.

What you'll do:

• Develop and maintain backend services and REST APIs (primarily Python) that carry forward legacy application workflows, including administrative and subscription-management functions
• Build and update user-facing features using modern front-end technologies (e.g., React) that work across a wide range of browsers and devices
• Develop event-driven, message-processing components on AWS (e.g., Lambda, SQS, S3) and the data-access layer for relational databases
• Study legacy code and documentation to understand how existing systems behave, and help write design documents, API contracts, and workflow diagrams that preserve that behavior in the cloud version
• Add structured logging, audit trails, and correlation-ID tracing so issues can be followed across components
• Write automated tests, test simulators, and mocks, and contribute to CI/CD pipelines, including security-scan gates
• Fix security findings and vulnerable dependencies, following least-privilege access practices and government security requirements
• Contribute to application deployments and AWS infrastructure under the guidance of senior engineers
• Collaborate with teammates, QA, DevSecOps, and government stakeholders, and participate in demos and knowledge-transfer sessions
• Learn additional applications in the portfolio over time, with mentorship, as program priorities evolve

What they're looking for:

• Bachelor's degree or Bachelor's degree in-progress in Computer Science, Software Engineering, or a related field
• Experience building backend services or APIs in Python, or in another server-side language (e.g., Java or C#/.NET) with the ability to learn Python quickly
• Working knowledge of SQL and relational databases (e.g., PostgreSQL, SQL Server, or MySQL)
• Experience writing automated unit tests (e.g., pytest or similar)
• Experience with Git and familiarity with agile development practices
• Exposure to AWS or another cloud platform through work, coursework, personal projects, or certification
• Proof ofU.S. Citizenship and eligibility for Public Trust clearance
• Front-end experience with JavaScript (ES6+), HTML5, and CSS3, and a modern framework (e.g., React, Angular, or Vue.js)
• Hands-on experience with AWS services such as Lambda, S3, SQS, ECS, EC2, or RDS
• AWS certification (e.g., Cloud Practitioner or Developer – Associate)
• Familiarity with Python web and data frameworks (e.g., FastAPI, SQLAlchemy)
• Experience with database design and query optimization in PostgreSQL or SQL Server

Benefits:

• Access to generous medical, dental, and vision plans.
• Opportunity to work in different sectors, providing variety while maintaining stability.
• Depending on projects, remote working opportunities.