The Role
Develop and maintain Python backend services, REST APIs, React features, AWS event-driven components, and relational database integrations. Modernize legacy weather applications into secure cloud-native systems, write automated tests, support CI/CD and deployments, remediate vulnerabilities, and implement logging and tracing. Collaborate with QA, DevSecOps, senior engineers, and government stakeholders in an Agile environment while learning additional technologies and applications.
Summary Generated by Built In
Job Title: Junior Software Developer
Location: McLean, VA (Hybrid)
Company: BLN24
About Us: We find strength in teamwork-a better you is a better us
BLN24 is an award-winning Management Consulting Firm that supports the U.S. Federal Government in successfully achieving their mission and goals. Our service and solutions delivery start with understanding each client’s end-state, and then seamlessly integrating within each Agency’s organization to improve and enhance strategic and technical operations and deployments.
Job Overview:
BLN24 is seeking a Junior Software Developer to support NOAA's modernization of mission-critical weather and data dissemination systems. Working as part of an Agile development team and with mentorship from senior engineers, the developer will help review legacy weather applications, which typically ingest, route, and deliver weather products, and convert them into secure, event-driven, cloud-native applications on AWS in support of the National Weather Service. The ideal candidate is eager to learn modern cloud technologies, enjoys solving technical challenges, and thrives in a collaborative environment delivering solutions that improve NOAA's capabilities.
Role and Responsibilities:
Required Skills/Abilities, Experience
Other Desired Skills/Abilities, Experience
What BLN24 brings to the Game:
BLN24 benefits are game changing. We like our team to play hard and that means they need to be taken care of — physically, financially, and emotionally. We make sure to keep them in the game by giving them access to generous medical, dental, and vision plans.
Location: McLean, VA (Hybrid)
Company: BLN24
About Us: We find strength in teamwork-a better you is a better us
BLN24 is an award-winning Management Consulting Firm that supports the U.S. Federal Government in successfully achieving their mission and goals. Our service and solutions delivery start with understanding each client’s end-state, and then seamlessly integrating within each Agency’s organization to improve and enhance strategic and technical operations and deployments.
Job Overview:
BLN24 is seeking a Junior Software Developer to support NOAA's modernization of mission-critical weather and data dissemination systems. Working as part of an Agile development team and with mentorship from senior engineers, the developer will help review legacy weather applications, which typically ingest, route, and deliver weather products, and convert them into secure, event-driven, cloud-native applications on AWS in support of the National Weather Service. The ideal candidate is eager to learn modern cloud technologies, enjoys solving technical challenges, and thrives in a collaborative environment delivering solutions that improve NOAA's capabilities.
Role and Responsibilities:
- 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.
Required Skills/Abilities, Experience
- Education and experience: Bachelor’s degree or Bachelor’s degree in-progress in Computer Science, Software Engineering, or a related field
- Back-end development: 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.
- Databases: Working knowledge of SQL and relational databases (e.g., PostgreSQL, SQL Server, or MySQL).
- Testing: Experience writing automated unit tests (e.g., pytest or similar).
- Tools and processes: Experience with Git and familiarity with agile development practices.
- Cloud: Exposure to AWS or another cloud platform through work, coursework, personal projects, or certification.
- U.S. Citizenship Required: Proof of U.S. Citizenship and eligibility for Public Trust clearance.
Other Desired Skills/Abilities, Experience
- 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.
- Experience with integration testing and CI/CD pipelines.
- Familiarity with Infrastructure as Code (e.g., Terraform, CloudFormation).
- Familiarity with Docker and containerized environments (e.g., ECS or Kubernetes).
- Experience reading and modernizing legacy code (e.g., Java, C/C++, or C#/.NET).
- Experience with application security practices such as vulnerability remediation and secrets management.
- Experience with logging and observability tools and practices.
- Familiarity with federal government environments.
- Experience using AI-assisted development tools (e.g., GitHub Copilot, Claude, ChatGPT) responsibly, within security and data-handling policies.
What BLN24 brings to the Game:
BLN24 benefits are game changing. We like our team to play hard and that means they need to be taken care of — physically, financially, and emotionally. We make sure to keep them in the game by giving them access to generous medical, dental, and vision plans.
- You can join one of the fastest growing companies headquartered in the Washington DC Metro Area. We give you the opportunity to work in different sectors, so you have the chance at variety while maintaining stability.
- Flexibility at BLN24 allows each individual the opportunity to balance quality work and their personal lives. Depending on projects, we allow remote working opportunities so you can always be in the game no matter where you call home.
Skills Required
- 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 another server-side language such as Java or C#/.NET
- Working knowledge of SQL and relational databases
- Experience writing automated unit tests
- Experience with Git and familiarity with Agile development practices
- Exposure to AWS or another cloud platform through work, coursework, personal projects, or certification
- U.S. citizenship
- Eligibility for Public Trust clearance
- Front-end experience with JavaScript, HTML5, CSS3, and a modern framework such as React, Angular, or Vue.js
- Hands-on experience with AWS services including Lambda, S3, SQS, ECS, EC2, or RDS
- AWS certification
- Familiarity with Python web and data frameworks such as FastAPI and SQLAlchemy
- Experience with database design and query optimization
- Experience with integration testing and CI/CD pipelines
- Familiarity with Infrastructure as Code tools such as Terraform or CloudFormation
- Familiarity with Docker and containerized environments such as ECS or Kubernetes
- Experience reading and modernizing legacy code
- Experience with application security practices, vulnerability remediation, and secrets management
- Experience with logging and observability tools and practices
- Familiarity with federal government environments
- Experience using AI-assisted development tools responsibly
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The Company
What We Do
BLN24 is a digital creative agency that is an 8(a) minority-owned small disadvantaged business (SDB). We add value by merging our commercial and government experience to create award-winning solutions for clients with the most important missions globally. BLN24 is a first-class communication, marketing, and technology agency for federal agencies and Fortune 500 companies. Founded by two former Booz Allen Hamilton employees, BLN24’s industry-lead marketing and communications strategies along with production and visual design has been on web and print advertisement campaigns as well as television networks across the nation.
