Senior Back End Web Developer
BLN24· Management Consulting· Sep 23, 2026 · 1mo ago
McLean, VA
In office
Full-time
Senior
$137K–$195K est.
8+ years exp
Job description
Job Title: Senior Back End Web Developer
Location: McLean, VA
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.
Position Overview:
BLN24 is seeking a Senior Back End Web Developer to support CFPB's RegTech BPA program by designing, building, and optimizing the back-end services behind public-facing regulatory applications. This role requires deep experience with Scala and the Akka Toolki t, CQRS and event-driven architecture, and high-performance API and database development within containerized microservices orchestrated by Kubernetes.
Key Responsibilities: • Design, develop, and maintain back-end services using Scala and the Akka Toolkit, applying functional programming, reactive programming, and actor-based concurrency
• Build and evolve components of a CQRS, event-driven architecture
• Develop and optimize database queries across relational and non-relational stores, including PostgreSQL and Cassandra / AWS Keyspaces
• Implement data access layers using Slick or comparable ORM libraries
• Build and optimize APIs that handle complex JSON payloads
• Write unit and integration tests that validate end-to-end API responses
• Develop containerized microservices for Docker and deploy them on Kubernetes
• Manage source code, reviews, and planning in GitHub, collaborating with architects, front-end developers, and product owners in an Agile team
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Required Qualifications: • 8+ years of professional back-end development experience
• Experience in functional programming using Scala, including the Akka Toolkit, the reactive programming model, and actor-based concurrency
• Experience working on a CQRS, event-driven architecture
• Demonstrated experience developing and optimizing database queries in relational (SQL) and non-relational (NoSQL) structures, such as PostgreSQL and Cassandra / AWS Keyspaces
• Expertise using Slick or another Object Relational Mapping (ORM) library
• Expertise building and optimizing APIs with complex JSON payloads
• Experience creating unit tests and integration tests that validate end-to-end API responses
• Experience developing containerized microservices, with specific skills developing for Docker containers using Kubernetes orchestration
• Experience working with GitHub for source code management and planning
• Bachelor's degree in Computer Science or related field; Master's degree preferred
Preferred Qualifications: • Experience using asynchronous Python methodologies or similar
• Experience with a front-end framework such as VueJS, especially ReactJS
• Demonstrated experience working on open-source projects, including delivering public-facing solutions
• Prior engagement at CFPB or other federal financial regulators (e.g., FDIC, OCC, SEC, FRB, NCUA)
• Experience delivering solutions in a federal FISMA Moderate or comparable security-compliance environment
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.
BLN24 is an Equal Opportunity Employer. We believe people are our strength and understand diverse talents are key to our success. We are an equal opportunity employer and place a high value on diversity and inclusion at our company. We do not discriminate on the basis of any protected attribute, including race, religion, color, national origin, gender, sexual orientation, gender identity, gender expression, age, marital or veteran status, pregnancy or disability, or any other basis protected under applicable law. In accordance with applicable law, we make reasonable accommodations for applicants' and employees' religious practices and beliefs, as well as any mental health or physical disability needs.
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apikubernetesawsdockeragilesqlpython
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Benefits
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Dental
Vision