Senior Software Engineer (Full Stack) - Momentum

Job Description

Job Description

Position Summary

We’re looking for a Senior Software Engineer (Full Stack) to join our growing Engineering team. This role will report directly to Engineering leadership and collaborate cross-functionally with stakeholders across Product, Design and Engineering.

You'll help us build, scale, and maintain the web applications that power the Virtuous platform — keeping them fast, reliable, and observable as our traffic and data grow, while also shipping the net-new features that win deals and deepen the value customers get from the product. You should feel comfortable across the full stack, from crafting intuitive UIs to designing robust backend services, but gravitate toward the harder questions: How does this behave under load? Where does it fall over, and how do we know before our customers do? How do we ship quickly without sacrificing reliability?

It's essential that you already know and actively use modern AI development tools and that you're curious about how to make them work harder for you. We treat AI agents as a core part of how strong engineers work today: a force multiplier across the entire stack. But we never trade speed for quality. You stay firmly in the driver's seat, owning the correctness, design, and long-term health of everything you ship, and bringing the judgment to know when to lean on a tool, when to question it, and when a hard problem still demands your own thinking.

Our current tech stack is Python/Django on the backend, with PostgreSQL as our primary datastore. On the frontend, we're actively migrating from React/GraphQL toward a leaner, server-side architecture built on HTMX. We're continually evaluating tools and frameworks to support a growing platform, and a willingness to explore new technologies and offer thoughtful input into technical and infrastructure decisions is important to us.

Responsibilities

You'll own meaningful, high-impact areas of the platform end to end — not just contribute to them. Specifically, you can expect to:

• Own the performance and scalability of our data layer as we onboard larger and more complex organizations — indexing, query optimization, read replicas, partitioning, and connection pooling — so onboarding and day-to-day usage stay fast and reliable even at enterprise scale

• Own our asynchronous and background-processing infrastructure (e.g., Celery), keeping it healthy, observable, and able to keep pace with growing data volume

• Design, build, and ship net-new, revenue-driving features across the full stack — from messaging and bulk-sending capabilities to richer reporting, analytics, and email experiences

• Help reinforce and extend our move to a server-side, HTMX-based frontend, improving both developer velocity and front-end reliability

• Design, build, and maintain scalable web applications used by nonprofit organizations around the world

• Collaborate closely with cross-functional teams to understand user needs and translate them into technical solutions

• Write clean, testable, and efficient code across the frontend and backend

• Contribute to architectural discussions and help drive technical decision-making across the platform

• Participate in code reviews, and help foster a culture of learning and improvement

• Own the reliability, performance, and observability of the systems you work on — instrument them well, set meaningful alerts, and treat production health as a first-class part of the work

• Provide thoughtful feedback on technology choices as we evaluate changes across our stack

• Support a culture of experimentation, iteration, and continuous delivery

You Must Have

• 6+ years building modern web applications, including meaningful time spent running and scaling them in production

• Proficiency in Python and frameworks like Django (or similar)

• Hands-on experience with AI coding agents (Claude Code, Cursor, Copilot, etc.) as part of your regular development workflow

• Experience operating cloud infrastructure (AWS, GCP, or Azure) and infrastructure-as-code tooling (e.g., Terraform)

• Experience with JavaScript/TypeScript and frontend frameworks such as React or Vue

• Strong understanding of relational databases such as PostgreSQL — not just querying them, but tuning them: indexing, query optimization, and strategies for scaling (read replicas, partitioning, connection pooling, etc.)

• Experience integrating with RESTful and/or GraphQL APIs

• Solid DevOps fundamentals: CI/CD pipelines, containerization, infrastructure monitoring, and hands-on experience scaling applications under real load

• Comfort with observability tooling (metrics, logging, tracing, alerting) and a habit of using it to debug and prevent production issues

• A love for building quality products that delight users and solve real problems

• Strong communication skills and a team-first mindset

Nice to Haves

• Familiarity with container orchestration (Kubernetes) or modern PaaS deployment

• Experience defining and working against SLOs/SLIs, or otherwise formalizing reliability targets

• Experience working in a SaaS or B2B product company

• Familiarity with C# / .NET

• Prior experience in the nonprofit tech space

• Contributions to open-source projects or relevant technical blogs

• Excitement about helping teams grow and mature their engineering practices

About Us

Virtuous software is powering the world’s leading nonprofits and inspiring a new generation of generosity.

At Virtuous, we believe generosity has the power to transform the world - and so we are on a mission to create $10B in net new generosity by helping nonprofits better connect with and inspire their donors.

Our talented team is hungry, humble, and committed to delivering best-in-class software solutions, customer success interactions, and sales experiences to the nonprofit community.

Our values are more than just a poster on the wall. Instead, our mission and values are precisely why candidates choose Virtuous. Our core values are:

1. Build Better : We build audacious ideas to accelerate philanthropy and dismantle the status quo.

2. Display Radical Generosity : We are generous with our time & talent as we serve our team and the nonprofit community.

3. Stay Humble & Enjoy the Journey : We take our work seriously, but we don't take ourselves too seriously.

Virtuous should act as a career accelerator for everyone on our team. Team members should look back at their time at Virtuous as one of the most productive and stretching seasons in their professional lives. This means that working at Virtuous isn't for everybody. It is for the select few who are ready to do hard things and build something truly great.

If this sounds like you, we’d love for you to apply!

What We Offer

• Market competitive pay leveraging Carta data

• Employee recognition through Bonusly (birthdays, anniversaries, achievements, etc.)

• 401(k) retirement plan with company matching- 50% match up to 6% of compensation after 90 days

• We value our employee’s work-life balance and encourage taking advantage of Unlimited PTO

• Supportive time off including paid volunteer days and company holidays

• Employer-contributed healthcare benefits, encompassing medical, dental, and vision coverage, with plans available for dependents and choices for Health Savings Accounts (HSA) and Flexible Spending Accounts (FSA).

• 12 weeks primary parent leave, 4 weeks secondary parent leave - full pay (adoption as well)

• We pride ourselves on Community and host exciting company outings and events.

We’ve recently noticed an increase in recruitment scams where individuals are impersonating recruiters to obtain personal or financial information through fraudulent interviews and job offers.

Please note that all legitimate communication from Virtuous will only come from the @virtuous.org domain. If you receive a message from other domains, even if they look similar (e.g., virtuouscareers.org or virtuousjobs.com), they are  not legitimate and we recommend disregarding it immediately.