Senior Full-Stack Software Engineer – Back-End Focused

# Senior Full-Stack Software Engineer – Back-End Focused Stand Together Full Time senior Arlington, Virginia, USPosted Yesterday##

Role Overview Stand Together is hiring a Senior Full-Stack Software Engineer – Back-End Focused. This is a full-time role in Arlington. Part of Stand Together's Backend hiring, posted yesterday. Full responsibilities, required qualifications, and the apply link are listed in the description below.## Salary Context Salary is not disclosed in this posting. Market median for Senior-level Backend roles is $170k-$216k (based on 16 comparable listings).

Many employers share specifics during the interview process or after an initial screen.## Resume Keywords to Include Make sure these keywords appear in your resume to improve ATS scoring

Python Java Script Type Script PHPSQLReact

Next.jsNode.jsSign up free to auto-tailor your resume with all these keywords and get a higher ATS score## Job description

Stand Together is a philanthropic community that helps America’s boldest changemakers tackle the root causes of our country’s biggest problems, from education to the economy, broken communities, and toxic division, among dozens of other pressing issues. We provide our partners with access to resources including funding, thought leadership, a network of peers, and a playbook for applying proven principles to transform lives and society.

As a Senior Full-Stack Software Engineer (Back-End Focused) on our Enterprise IT team, you will own the architecture and reliability of the backend systems powering Stand Together's high-visibility, consumer-facing web applications. In this role, you will combine hands-on development with architectural oversight across scalable, AWS-hosted applications, ensuring the reliability, performance, and long-term scalability of our digital ecosystem while mentoring engineers and partnering cross-functionally to deliver high-impact solutions.

How You Will Contribute
* Contribute to architecture, design, and technical decision-making across the full application stack, including React and Next.js frontends, Node.js backend services, Contentful CMS integrations, and AWS cloud infrastructure.
* Design, build, and maintain scalable, secure, and high-performing APIs that serve as the foundation for consumer-facing applications.
* Oversee CMS content modeling and editorial workflow optimization within Contentful CMS.
* Improve CI/CD pipelines, deployment processes, monitoring, observability, and system reliability.
* Ensure compliance with security, governance, and cloud infrastructure best practices within AWS, including IAM least-privilege, private S3 patterns, and secrets management.
* Establish and enforce engineering standards, best practices, and scalable design patterns.
* Provide technical mentorship, supervision, and performance guidance to engineers.
* Partner with product, design, and business stakeholders to translate requirements into technical solutions
* Support sprint planning, technical estimation, roadmap development, and hiring efforts.

What You Will Bring
* Bachelor’s or master’s degree in computer science, engineering, or a related field.
* 7+ years of full-stack software engineering experience with a clear back-end focus, including demonstrated architectural responsibility.
* Experience mentoring software engineers.
* Excellent collaboration, communication, and cross-functional partnership skills.
* Proficiency in JavaScript/Type Script, Python, and PHP; strong Node.js backend experience, preferably with NestJS.
* Experience designing and consuming APIs in distributed or microservices architectures.
* Experience with JWT/OIDC authentication, including Auth0 or equivalent, and passport-jwt/JWKS patterns.
* Proven experience with relational (SQL) and No

SQL databases — schema design, query optimization, multi-environment deployments, and operational MongoDB (replication, sharding, performance tuning) preferred.
* Docker and container orchestration on AWS ECS (task definitions, logging, ECR).
* Working knowledge of core AWS services:
Amplify, API Gateway, ALB/NLB, S3, EFS, Cloud Watch, X-Ray, IAM, and VPC.
* Experience building and maintaining automation within…