Principal Engineer

Fluxx; United States; A distancia; USD 148.000 - 214.000; Jornada completa

Ventajas ofrecidas por este puesto de trabajo

Medical insurance

Dental insurance

Vision insurance

Flexible time off

Paid sick leave

Parental leave

Learning stipend

Internet stipend

Home office stipend

401(k) matching

Stock options

Descripción de la vacante

Fluxx is seeking a Principal Engineer to lead architecture and hands-on development on our grantmaking platform. You will shape major initiatives, write code, and drive architectural decisions with cross-functional teams including product, infra, and customers.

You’ll mentor engineers, elevate technical standards, and advance AI-assisted development across the SDLC while ensuring scalability and performance in a fast-paced environment.

Formación

• 8+ years of professional software engineering on a complex SaaS platform.
• Experience as principal engineer or architect on large-scale systems.
• Strong full-stack capabilities with NodeJS and React.
• Ability to communicate trade-offs and architect decisions clearly.
• Proven mentorship and leadership across teams.

Responsabilidades

• Lead the architecture and implementation of major initiatives in our platform.
• Make architectural decisions counterfactually - surface trade-offs and choose the best path.
• Provide technical leadership across all phases of large-scale engineering work.
• Collaborate with cross-functional teams to drive product direction and process improvements.
• Design and implement user-facing and backend features across the platform.
• Produce high-quality, well-tested code and pass peer review.
• Promote best practices across the SDLC and mentor engineers.
• Represent engineering in leadership discussions and with customers.
• Champion thoughtful use of AI and agents in our SDLC.

Conocimientos

Full-stack engineering

NodeJS

React

Architectural leadership

Communication

Mentorship

Team collaboration

AI in SDLC

Herramientas

Ruby on Rails

AWS

DevOps fundamentals

MySQL

Elasticsearch

Redis

Resque

Go

Python

Java

Descripción del empleo

Fluxx is looking for a highly motivatedPrincipal Engineer to join the Engineering team.

As a Principal Engineer at Fluxx, you'll be a senior technical leader on our engineering team, responsible for driving the architecture and implementation of large, cross-cutting initiatives on our grantmaking platform. You will work closely with our SVP of Engineering, our co-founding CTO, Director of Engineering, fellow Principal Engineers, and our product and infrastructure teams to make the right architectural calls, write meaningful code, and help the broader team raise its technical bar.

This is a hands-on role. You'll spend the majority of your time in code, working through real problems and deliverables end-to-end, and the rest of your time on design, technical direction, and unblocking others. We are looking for someone who considers alternatives carefully, weighs trade-offs against the realities of our system, and is comfortable putting their opinions on the table and being challenged on them.

This is a full-time exempt and remote position. Candidates must be located in the United States. We aren't accepting contractors.

How you will make an impact:

• Lead the architecture and implementation of major initiatives in our platform
• Make architectural decisions counterfactually - considering several plausible approaches, surfacing the trade-offs, and choosing the best path rather than defaulting to a generic template
• Provide technical leadership across all phases of large-scale engineering work, from scoping and design through implementation, code review, rollout and maintenance
• Work cross-functionally with the Director of Engineering, fellow principal engineers, infrastructure engineers, product managers, DevOps, and QA to drive complex decisions on product direction and process improvements
• Design and implement user-facing and backend features across the entire platform
• Produce high-quality code that is well designed, thoroughly tested, and passes peer review
• Lead and drive best practices with the team across the entire SDLC
• Mentor engineers across the team, raise the architectural literacy of the group, and actively contribute to brainstorming and design discussions
• Represent the engineering organization in leadership discussions and occasionally in direct conversations with customers.
• Champion thoughtful use of AI and agents in our SDLC, helping the team amplify their work

What you bring to the team:

• 8+ years of professional software engineering experience, with a meaningful share of that as a principal engineer or architect on a complex SaaS platform
• Deep experience as a full-stack engineer, with substantial depth using NodeJS and React
• A habit of considering alternatives, naming the trade-offs, and choosing the right path for the system in front of you rather than reaching for a textbook answer
• Confidence to put your opinion on the table, ask the questions others aren't asking, and engage in brainstorming and architectural debate
• Strong written and verbal communication, with experience working closely with product, design, QA, and infrastructure peers
• A deep foundation in computer science and a track record of making web applications highly performant
• Dedication to writing and maintaining documentation that helps others move faster
• Willingness to adapt to a fast-paced environment, to a codebase with a long history, and to a rapidly evolving AI-assisted development model
• A track record of mentorship and of raising the technical bar of the engineers around you
• Proven ability to navigate complex technical trade-offs, ensuring rapid feature delivery without compromising long-term platform scalability

Technical Experience:

• Large Ruby on Rails codebases - you should be able to speak credibly across both ecosystems
• AWS and DevOps fundamentals - you do not need to be an infrastructure specialist, but you should be comfortable reasoning about deployment, scaling, and observability
• MySQL at scale, including query optimization, indexing strategies, and schema migrations on live systems
• Elasticsearch, Redis, Resque, and other supporting services in a production Rails environment
• AI-assisted development workflows, including thoughtful use of agents, prompt design, and the operational realities of keeping agentic SDLC pipelines healthy
• B2B SaaS platforms, particularly those with highly configurable customer-specific behavior

Bonus points if you have some experience withGo, Python and other modern languages used in systems targeting high-performance and concurrency features, and Java

About Fluxx:

At Fluxx, our mission is to be the leading collaborative grant management platform in our global communities. We build technology that drives positive impact by helping foundations, government agencies, and nonprofits streamline the grantmaking process—making it easier to get funding to the organizations that need it most. For more than 15 years, we’ve helped organizations move away from manual processes and legacy tools to a flexible, AI + data-driven platform that supports the full lifecycle of grantmaking. Today, Fluxx supports a global community of 400+ customers who collectively manage and distribute more than $39B in grants annually.

We are a people-first and inclusive workplace committed to continuous learning. We pride ourselves in having a diverse workforce and we do not discriminate against any employee or applicant because of race, creed, color, religion, gender, sexual orientation, gender identity/expression, national origin, disability, age, genetic information, veteran status, marital status, pregnancy or related condition, or any other basis protected by law. We respect the gender, gender identity and gender expression of our applicants and employees. It is our policy to comply with all applicable national, state and local laws pertaining to nondiscrimination and equal opportunity.

Fluxx offers the following benefits for the position subject to applicable eligibility requirements: Medical, dental, and vision insurance; Flexible time off; Paid sick leave; 12 weeks of fully-paid parental leave; Annual learning and development stipend; Internet stipend; One-time home office set-up stipend; 401(k) retirement plan with company match. This position is also eligible for incentive stock options, subject to the terms of Fluxx’s applicable stock plans.

Fluxx is committed to fair, transparent, and equitable compensation practices. We use a market based approach that considers cost of labor by geographic region, along with company size and industry benchmarks.

This role is categorized into two compensation zones based on location, with the following expected annual base salary:

• Zone 1 – San Francisco Bay Area & New York City $164,000- $225,000
• Zone 2 – All other locations $147,600- $214,100

The range listed reflects the expectations outlined in this job description. The final salary and commission package will be determined based on, but not limited to:
(a) the candidate’s location, (b) individual skills and qualifications, and (c) relevant experience.

For government reporting purposes, we ask candidates to respond to the below self-identification survey. Completion of the form is entirely voluntary. Whatever your decision, it will not be considered in the hiring process or thereafter. Any information that you do provide will be recorded and maintained in a confidential file.

As set forth in Fluxx’s Equal Employment Opportunity policy, we do not discriminate on the basis of any protected group status under any applicable law.

If you believe you belong to any of the categories of protected veterans listed below, please indicate by making the appropriate selection. As a government contractor subject to the Vietnam Era Veterans Readjustment Assistance Act (VEVRAA), we request this information in order to measure the effectiveness of the outreach and positive recruitment efforts we undertake pursuant to VEVRAA. Classification of protected categories is as follows:

A "disabled veteran" is one of the following: a veteran of the U.S. military, ground, naval or air service who is entitled to compensation (or who but for the receipt of military retired pay would be entitled to compensation) under laws administered by the Secretary of Veterans Affairs; or a person who was discharged or released from active duty because of a service-connected disability.

A "recently separated veteran" means any veteran during the three-year period beginning on the date of such veteran's discharge or release from active duty in the U.S. military, ground, naval, or air service.

An "active duty wartime or campaign badge veteran" means a veteran who served on active duty in the U.S. military, ground, naval or air service during a war, or in a campaign or expedition for which a campaign badge has been authorized under the laws administered by the Department of Defense.

An "Armed forces service medal veteran" means a veteran who, while serving on active duty in the U.S. military, ground, naval or air service, participated in a United States military operation for which an Armed Forces service medal was awarded pursuant to Executive Order 12985.