Senior Back End Web Developer

RiseMe; McLean (VA); Hybrid; USD 120,000 - 170,000; Full time

Job summary

BLN24 is seeking a Senior Back End Web Developer to design, build, and optimize the back-end services behind CFPB RegTech applications. The role emphasizes Scala, Akka, CQRS, and containerized microservices deployed with Kubernetes in a modern API-centric environment.

Ideal candidates will have 8+ years of backend experience, strong SQL/NoSQL skills, and a track record of implementing robust data access layers and comprehensive tests within Agile teams.

Qualifications

• 8+ years of backend development experience.
• Proficiency with Scala, Akka, reactive programming and actor concurrency.
• Experience in CQRS and event-driven architecture.
• Strong SQL/NoSQL query optimization (PostgreSQL, Cassandra/AWS Keyspaces).
• ORM experience with Slick or similar library.
• APIs handling complex JSON payloads.
• Unit and integration testing experience.
• Containerized microservices with Docker and Kubernetes.
• GitHub for source control and planning.
• Bachelor's in CS; Master's preferred.

Responsibilities

• Design, develop, and maintain back-end services with Scala and Akka.
• Build components of a CQRS, event-driven architecture.
• Optimize database queries across SQL and NoSQL stores.
• Implement data access layers using ORM tools.
• Build and optimize APIs handling complex JSON payloads.
• Write unit and integration tests for end-to-end APIs.
• Develop containerized microservices for Docker and Kubernetes.
• Collaborate with architects, frontend developers and product owners in Agile teams.

Skills

Scala

Akka Toolkit

Reactive programming

Actor concurrency

CQRS

Event-driven architecture

SQL/NoSQL queries

ORM (Slick)

APIs with JSON

Unit/Integration testing

Docker

Kubernetes

GitHub

Education

Bachelor's degree in CS or related

Master's degree preferred

Tools

PostgreSQL

Cassandra / AWS Keyspaces

Slick ORM

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 thatsupports 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 Toolkit, 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

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.