Senior/Staff Backend Engineer

Founded in 2024, DualEntry is one of the world’s fastest-growing AI startups. At DualEntry, the future of finance is being written today. ERP is one of the largest fintech markets in the world ($220,000,000,000+). Yet, tens of thousands of companies are still using on-premise systems, and the industry has not seen new entrants in more than 30 years. Our AI-native ERP lets accounting teams achieve more in less time. $5M-ARR businesses to NYSE-listed companies trust DualEntry to automate away manual data entry work with AI. We’re finally making the one-person finance team a reality and putting the pain of legacy ERPs from the 1990’s in the past. We operate with urgency and ownership. We move fast. Why this role matters now Since starting 18 months ago, we’ve raised $100,000,0000+ from world‑class investors such as Lightspeed Venture Partners, Khosla Ventures, Contrary Ventures and Google Ventures, as well as more than 20 angel investors who’ve built, scaled, and exited some of the most impactful companies of the last decade. We got there by moving incredibly fast and hiring an exceptionally sharp, hard‑working and deeply committed team from leading tech and accounting companies — Ramp, Meta, Microsoft, Lyft, PwC, Deloitte, J.P. Morgan, Bloomberg, Sage, Xero and Intuit. And some of us don't have a fancy logo on our resume and are here for a shot to prove ourselves. We’re a small team, growing fast with huge momentum join early. As our Senior/Staff Backend Engineer you’ll design and build core systems end-to-end, architect real-time business‑critical workflows, and ship production‑ready features daily. This is an intense, hands‑on engineering role with full ownership. We expect you to push for excellence and raise the bar. Where you'll create impact You’ll own end-to-end execution for backend systems and infrastructure You’ll build APIs, services, and real-time systems handling complex accounting logic You’ll collaborate with founders, product, and frontend engineering to turn complex workflows into secure, performant systems You’ll design, implement, and ship production-ready features at high speed You’ll manage data migrations, scaling challenges, external integrations, and end-to-end reliability You’ll drive measurable outcomes that accelerate DualEntry’s product velocity and stability What sets you up for success Hardcore work ethic and high agency 8+ years of experience in backend engineering Proven track record in high-growth, high-ownership environments Strong skills in PostgreSQL, SQL, ORMs, migrations, and schema design Experience with AWS or comparable cloud infrastructure Strong API design and testing experience Understanding of CI/CD, deployment, and production readiness Bonus: expertise in Python and modern frameworks (FastAPI, Flask, or Django) Ability to manage complex systems with evolving requirements Fluent English (C1+) with clear communication How you operate Pragmatic : you like to move forward and make decisions based in reality (not theory). We don't debate if Cassandra has the most theoretical scalability -- we use Postgres until it breaks Hard working : 'You can work long, hard, or smart, but (here) you can't choose two out of three' - Jeff Bezos. We wrote this job post during the weekend Curious : you love to learn, are highly curious about new frameworks and solutions to engineering problems Fast-moving: you deploy daily, iterate quickly, and never wait for permission Why you’ll thrive here Significant equity ownership in one of the top AI companies in the world You’re joining early and will grow with DualEntry Your feedback shapes the product directly High-speed culture High-trust environment with high expectations Ambitious mission - ERP is one of the largest B2B software markets in the world ($220bn per year), this is a once in a lifetime opportunity to build the next generation ERP in an industry that has not seen new entrants in 30+ years Equity: $75,000+ USD Contract type: B2B Remote-first team - the fastest team you will have ever worked with Time Off: 15 PTO days + 12 public holidays Visa sponsorship option for relocation to NYC within 2+ years Early-stage role with high autonomy and real long-term upside Enjoy a learning & development budget for courses, certifications, and language learning to keep growing your skills. Work where you feel most productive at co-working spaces or from your home office with support for setup, internet, and phone. Plus, wellness perks and more to make your workday even better What happens after you apply Every application is reviewed manually by our senior engineering team. If your background is a strong match for the role, one of our recruiters will contact you to arrange an initial screening call. We hire the best, expect the best, and give you the masterclass of your career - an archaic and huge industry like ERP only goes through a restructure like this once in a lifetime. It’s hard, it’s intense, and it’s the most rewarding work you’ll ever do. If you’re hungry, driven, and ready to build something massive, climb aboard #J-18808-Ljbffr