# Senior Backend Engineer

**Company:** [Quidient](https://hotfix.jobs/companies/quidient)
**Location:** Columbia, MD
**Role:** Backend Engineering
**Salary:** $100k – $120k/yr
**Experience:** 4+ years
**Skills:** AWS, Python, Node.js, Docker, Microservices, CI/CD, api gateway, AWS Lambda, S3, EC2, ECS, EKS, CloudFormation, Infrastructure As Code
**Posted:** 2026-07-19

> Senior Backend Engineer owning API layer, microservices, and AWS cloud infrastructure for 3D scene data processing and delivery in Quidient's GSR platform. Requires 4+ years backend experience, strong AWS and Python/Node.js skills, and hybrid work in Columbia, MD.

## Job Description

## What You’ll Do

### API & Backend Architecture
- Own and evolve the backend API layer that enables commercial partners and internal applications to integrate with Quidient’s 3D reconstruction and processing platform.
- Design and maintain microservice architectures that handle the flow of 3D scene data from mobile capture through cloud-based processing and delivery.
- Build and operate cloud infrastructure on AWS — including compute, storage, networking, and serverless components — with a focus on reliability, security, and cost efficiency.
- Implement and maintain CI/CD pipelines, containerized deployments (Docker), and infrastructure-as-code to streamline the software delivery process.

### Platform Reliability & Operations
- Monitor system performance, troubleshoot backend and cloud issues, and maintain platform uptime for production workloads.
- Design and implement systems for computational offloading — moving high-performance, low-latency processing from edge devices to cloud infrastructure.
- Implement security best practices including IAM policies, encryption at rest and in transit, and authentication protocols (OAuth/OpenID).

### System Contribution & Collaboration
- Contribute production-quality code in Python and/or Node.js across backend services and infrastructure.
- Work closely with the platform engineering manager and cross-functional teams to prioritize backend work that unblocks product delivery.
- Identify and resolve technical debt, performance bottlenecks, and scalability gaps in the backend stack proactively.

## What You Bring

### Must-Have Qualifications
- Bachelor’s degree in Computer Science or a related field — or equivalent demonstrated experience.
- 4+ years of professional experience building and maintaining backend systems and APIs in production environments.
- Solid backend architecture skills — you can design APIs, data models, and service boundaries that hold up under real production load.
- Strong experience with AWS at the application layer — Lambda, API Gateway, S3, EC2, ECS/EKS, CloudFormation, or equivalent services.
- Hands-on experience with Docker, containerized deployments, and microservice architecture.
- Strong Python and/or Node.js skills in a production backend context.
- Experience with CI/CD pipelines, automated testing, and infrastructure-as-code.
- Willingness to work on-site in Columbia, MD, in a hybrid capacity.
- Meet Quidient, customer, and government security requirements, which may include, but are not limited to a background check, citizenship verification, and Criminal Justice Information Services verification.

### Nice-to-Have Qualifications
- Familiarity with serverless architecture (AWS Lambda) and event-driven backend design.
- Solid understanding of networking concepts.
- Knowledge of security best practices including IAM, encryption, and OAuth/OpenID implementation.
- Background in 3D imaging, computer vision, or graphics processing pipelines.
- Experience with high-performance computing or low-latency data processing.
- Experience at an AWS consulting partner, service company, or in an AWS-heavy product engineering environment.

## What We Offer

### Compensation
- Salary Range: $100,000 - $120,000.
- Annual bonus and equity as appropriate.

### Benefits
- Health insurance
- HSA
- 401(k) with company match
- Life & disability insurance
- Paid holidays & generous PTO
- Opportunities for bonuses, equity, and career growth

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