Senior Back End Web Developer

Bln24, Llc.; McLean (VA); Hybrid; USD 120,000 - 180,000; Full time

Benefits offered by this job

Remote work opportunities

Medical, dental, vision plans

Job summary

BLN24 is seeking a Senior Back End Web Developer in a role focused on building and optimizing back-end services using Scala, Akka, and CQRS with an event-driven approach. You will design APIs handling complex JSON payloads and deploy containerized microservices on Kubernetes.

The ideal candidate has 8+ years of experience, strong ORM and database skills (PostgreSQL/Cassandra), and a track record in Agile teams with GitHub.

Qualifications

• 8+ years of professional back-end development experience.
• Experience with Scala, Akka Toolkit, reactive programming, and actor-based concurrency.
• Experience with CQRS and event-driven architecture.
• Experience optimizing queries in PostgreSQL and Cassandra / AWS Keyspaces.
• Experience with Slick or comparable ORM.
• Experience building APIs with complex JSON payloads.
• Experience unit and integration testing end-to-end APIs.
• Experience containerized microservices with Docker and Kubernetes.
• Experience using GitHub for source code management in Agile teams.
• Bachelor's degree in Computer Science or related field; Master's preferred.

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

Skills

Scala

Akka Toolkit

Functional programming

Reactive programming

Actor-based concurrency

CQRS

API development

JSON payloads

Unit testing

Integration testing

Docker

Kubernetes

GitHub

Agile

Education

Bachelor's degree in Computer Science or related field

Master's degree preferred

Tools

Slick ORM

PostgreSQL

Cassandra

AWS Keyspaces

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 Toolkitt, 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.