{"id":177971,"url":"https://alion.io/job/fluxx-principal-engineer","title":"Principal Engineer","company":{"id":65912,"name":"Fluxx","domain":"fluxx.io","url":"https://alion.io/company/fluxx","size_band":"51-200","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Greenhouse","truth_index":null},"role":"Backend","role_family":"Backend","seniority":"lead","employment_type":null,"work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"posting_text","remote_working_hours":null,"hiring_geo_confidence":"explicit","locations":[],"countries":[],"hiring_countries":["US"],"hiring_countries_total":1,"salary":{"min":164000,"max":210000,"currency":"USD","period":"year","gross":null,"usd_annual":210000},"salary_estimate":null,"experience_years_min":8,"visa_sponsorship":false,"relocation_package":false,"has_equity":true,"technologies":[{"name":"AI Agents","optional":false},{"name":"AWS","optional":false},{"name":"ElasticSearch","optional":false},{"name":"JavaScript","optional":false},{"name":"MySQL","optional":false},{"name":"Node JS","optional":false},{"name":"React.js","optional":false},{"name":"Redis","optional":false},{"name":"Ruby on Rails","optional":false},{"name":"TypeScript","optional":false},{"name":"Go","optional":true},{"name":"Python","optional":true},{"name":"Ruby","optional":true}],"status":"live","first_seen_at":"2026-06-10T20:07:03Z","employer_posted_date":"2026-09-24","last_verified_at":"2026-10-18T05:54:17Z","board_verified":true,"closed_at":null,"days_open":129,"trust":{"level":"stale","repost_count":0,"flags":["stale"],"days_open":129},"description":"Fluxx is looking for a highly motivated Principal Engineer to join the Engineering team.\nAs 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.\nThis 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.\nThis is a full-time exempt and remote position. Candidates must be located in the United States. We aren't accepting contractors. \nHow you will make an impact:\nLead the architecture and implementation of major initiatives in our platform \nMake architectural decisions counterfactually - considering several plausible approaches, surfacing the trade-offs, and choosing the best path rather than defaulting to a generic template\nProvide technical leadership across all phases of large-scale engineering work, from scoping and design through implementation, code review, rollout and maintenance\nWork 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\nDesign and implement user-facing and backend features across the entire platform \nProduce high-quality code that is well designed, thoroughly tested, and passes peer review\nLead and drive best practices with the team across the entire SDLC\nMentor engineers across the team, raise the architectural literacy of the group, and actively contribute to brainstorming and design discussions\nRepresent the engineering organization in leadership discussions and occasionally in direct conversations with customers.\nChampion thoughtful use of AI and agents in our SDLC, helping the team amplify their work\nWhat you bring to the team:\n8+ years of professional software engineering experience, with a meaningful share of that as a principal engineer or architect on a complex SaaS platform\nDeep experience as a full-stack engineer, with substantial depth using NodeJS and React\nA 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\nConfidence to put your opinion on the table, ask the questions others aren't asking, and engage in brainstorming and architectural debate\nStrong written and verbal communication, with experience working closely with product, design, QA, and infrastructure peers\nA deep foundation in computer science and a track record of making web applications highly performant\nDedication to writing and maintaining documentation that helps others move faster\nWillingness to adapt to a fast-paced environment, to a codebase with a long history, and to a rapidly evolving AI-assisted development model\nA track record of mentorship and of raising the technical bar of the engineers around you\nProven ability to navigate complex technical trade-offs, ensuring rapid feature delivery without compromising long-term platform scalability\nTechnical Experience:\nNode.js, React and modern JavaScript/TypeScript\nLarge Ruby on Rails codebases - you should be able to speak credibly across both ecosystems\nAWS and DevOps fundamentals - you do not need to be an infrastructure specialist, but you should be comfortable reasoning about deployment, scaling, and observability\nMySQL at scale, including query optimization, indexing strategies, and schema migrations on live systems\nElasticsearch, Redis, Resque, and other supporting services in a production Rails environment\nAI-assisted development workflows, including thoughtful use of agents, prompt design, and the operational realities of keeping agentic SDLC pipelines healthy\nB2B SaaS platforms, particularly those with highly configurable customer-specific behavior\nBonus points if you have some experience with Go, Python and other modern languages used in systems targeting high-performance and concurrency features, and Java\nSalary:\nFluxx 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.\nThis role is categorized into two compensation zones based on location, with the following expected annual base salary:\nZone 1 - San Francisco Bay Area & New York City $164,000- $210,000\nZone 2 - All other locations $147,600- $199,800\nThe 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:\n(a) the candidate’s location, (b) individual skills and qualifications, and (c) relevant experience.\nBenefits:\nFluxx 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. \nAbout Fluxx: \nAt 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. \nWe are a people-first and inclusive workplace committed to continuous learning. We pride ourselves on 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.","description_format":"text","description_chars":7135,"description_truncated":false,"requirements":{"experience_years_min":8,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":["Continuous learning","Flexible time off","Home office","Parental leave","Retirement plans","Stock options","Vision insurance"],"hiring_locations":[{"name":"United States","iso":"US","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Survey & Forms Software","Nonprofit, Church & Membership Software"],"lifecycle":[{"event":"open","at":"2026-08-31T03:05:15Z"}],"visa":[],"liveness":{"score":14,"band":"cold","label":"Long shot","p_open":1,"p_active":0.496,"p_room":0.28,"age_days":128,"expected_fill_days":36,"reasons":["conf:1","win:tail","crowd:"],"computed_at":"2026-10-17T05:46:00Z"},"pay":{"stated_usd_annual":210000,"is_top_pay":true},"html_url":"https://alion.io/job/fluxx-principal-engineer","json_url":"https://alion.io/job/fluxx-principal-engineer.json","meta":{"generated_at":"2026-10-18T08:12:10Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and active right now, what they do and how to work with them, readable by people and by agents and paid per call.","catalog":"https://alion.io/catalog.json","usage":{"tier":"crawler_verified","counted_by":"address","units_charged":1,"used_today":12305,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-19T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.02,"usd":0.002,"plus_per_slice":{"credits":0.05,"usd":0.005}},"unit":"per company, plus each slice with data","note":"the employer in depth","call":{"mcp_tool":"get_company","arguments":{"id":65912},"rest":"https://alion.io/mcp/rest/get_company?id=65912"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Ffluxx-principal-engineer"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":1,"usd":0.1},"unit":"per slice","note":"pay, demand and time to fill for this role and place","call":{"mcp_tool":"market_stats"},"human":"https://alion.io/catalog?offer=market.stats&for=job%2Ffluxx-principal-engineer"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.02,"usd":0.002},"unit":"per posting in a list","note":"similar open postings","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=job%2Ffluxx-principal-engineer"},{"id":"company.verify","title":"Is this company real and active right now","status":"pilot","price":null,"unit":"per company","request":{"url":"https://alion.io/catalog/request","method":"POST","body":"{\"offer\": \"company.verify\", \"for\": \"job/fluxx-principal-engineer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Ffluxx-principal-engineer"}]}