Senior Backend Developer - Integrations

Capital Rx; Denver (CO); Hybrid; USD 128,000 - 190,000; Full time

Job summary

Capital Rx is seeking a senior software engineer to lead large, high-impact projects in a hybrid setting with offices in NYC, Denver, and Charlotte. You will drive enterprise API integrations, cloud-native backend development, and data migrations, collaborating with product managers, designers, and clients to deliver scalable, secure solutions.

You will shape architecture, mentor teams, and ensure robust software delivery across regions, with a strong emphasis on security and reliability in a

Qualifications

• 7+ years of related job experience with a broad range of technical skills.
• Desire to work in a health technology company; PBM experience is a plus.
• Strong experience in Python (Flask/SQLAlchemy) and TypeScript (React).
• Advanced PostgreSQL knowledge with complex queries and optimization.
• Experience with microservices, API-based applications, and distributed caching.
• Proven ability to deliver cloud-based web apps using infrastructure as code (AWS, Terraform).
• Ability to improve scalability and observability of systems.
• Linux/Bash, Python, Node.js proficiency; Git in a mono repository.
• Strong unit testing and Playwright-based integration testing.
• Excellent communication for remote collaboration with clients.

Responsibilities

• Lead development and deployment of cutting-edge solutions from design to production.
• Collaborate with product managers to refine requirements and ensure seamless integration.
• Engage with major clients to architect innovative solutions and enhance product functionality.
• Establish enterprise APIs across services for interoperability and scalability.
• Build backend applications in Python on AWS Lambda, ECS, API Gateway.
• Implement serverless backend code (Flask/AWS Lambda/ECS).
• Design scalable systems to handle high-volume transactions with reliability.
• Ensure development follows security best practices and code quality standards.
• Provide technical leadership and drive timely, high-quality software delivery.
• Make informed architectural decisions leveraging prior experience.

Skills

Python

TypeScript

PostgreSQL

Microservices

AWS & Terraform

Linux/Bash

Git (mono repo)

Unit testing (Playwright)

API Integrations

Security mindset

Tools

Flask

SQLAlchemy

React

AWS

Terraform

Job description

Location

Location: Hybrid 3 days (offices in NYC, Denver, CO and Charlotte, NC area)

Position Summary

Join our mission to transform pharmacy benefits. In this development role, you will lead large, high-impact projects, working closely with product managers, designers, and clients to gather both business and technical requirements with a product mindset. You will be at the forefront of technical solutioning, driving enterprise API integrations, data migrations, data exchange, and prioritizing security. This role involves extensive client interactions, API development, and ensuring scalability. You will collaborate cross-functionally across internal teams and various departments within our client organizations to accelerate program technical deliveries. This is an exciting opportunity to redefine the pharmacy benefits landscape through collaboration and cutting‑edge cloud technology.

Why You'll Love Working Here

• Opportunity to lead high‑impact, client‑facing initiatives that directly influence key business metrics.
• Hands‑on exposure to architecture, system design, and solving complex scalability challenges in real‑world environments.
• Be a catalyst in accelerating client migration and new client onboarding with direct visibility into outcomes.
• Work on a team that values quick, elegant solutions to complex problems where your contributions shape the future of pharmacy benefits.
• We have a remote‑first culture.

Position Responsibilities

• Lead the development and deployment of cutting‑edge solutions from design to production.
• Collaborate with product managers and cross‑functional teams to refine and implement requirements, ensuring seamless integration and user experience.
• Engage with major clients and cross‑functional teams to architect innovative solutions and enhance product functionality.
• Establish and maintain consistent, enterprise‑grade APIs across services, ensuring interoperability and scalability while employing best practices for interactions with both partner and internal systems.
• Build robust backend applications in Python on AWS Lambda, API Gateway, SMS, ECS, and other cloud technologies.
• Implement backend code in a serverless, cloud‑native environment (Flask/AWS Lambda/ECS).
• Design and implement scalable systems capable of handling high‑volume transactions, ensuring robustness and reliability.
• Ensure security best practices are followed in all aspects of development and deployment.
• Conduct code reviews to maintain high code quality and standards.
• Demonstrate technical leadership, driving timely execution and high‑quality software delivery.
• Make informed architectural decisions through careful evaluation and leveraging prior experience.
• Self‑manage tasks, collaborate effectively with both internal and external teams, and drive projects to successful completion.
• Represent the software development team's products to stakeholders, providing technical insights and solutions.

Qualifications

• 7+ years of related job experience with a broad range of technical skills.
• Desire to work in a health technology company; previous Pharmacy Benefits Manager (PBM) experience is a plus.
• Strong experience in Python (Flask/SQLAlchemy) and TypeScript (React).
• Advanced PostgreSQL database knowledge, including common table expressions, windowing functions, views, stored procedures, and indexing techniques (full‑text or geospatial).
• Experience working with microservices, an API‑based application paradigm, and distributed caching techniques.
• Proven ability to deliver complex web applications to the cloud, targeting infrastructure as code with a security mindset (AWS, Terraform).
• Demonstrated ability to improve scalability and observability of systems.
• Proficiency in Linux using Bash, Zsh, Python, Node.js and similar tools.
• Experience with Git code management, preferably in a mono repository.
• Strong knowledge of unit testing across multiple paradigms and integration testing using frameworks like Playwright.
• Excellent verbal and written communication skills, enabling effective collaboration in a remote environment and with major clients' technical and non‑technical teams.
• Strong problem‑solving skills and a proactive approach to identifying and addressing potential issues.
• Prior experience working as a technical lead collecting functional and non‑functional requirements, or strong technical product management experience is a plus.

Additional Information

Nothing in this position description restricts management's right to assign or reassign duties and responsibilities to this job at any time.

All employees are responsible for adherence to the Capital Rx Code of Conduct including the reporting of non‑compliance. This position description is designed to be flexible, allowing management the opportunity to assign or reassign duties and responsibilities as needed to best meet organizational goals.

We provide equal employment opportunities to all employees and applicants for employment and prohibit discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, medical condition, genetic information, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state or local laws.

Compensation

New York, NY: $139,600 – $195,000 USD; Denver, CO: $128,000 – $190,000 USD; Charlotte, NC: $116,400 – $175,000 USD.