Senior Software Engineer, Full Stack
Full Stack Engineer · Senior · Full Time
Opens AtoB's application page
Role
What you'll do.
AtoB is revolutionizing payments infrastructure for the trucking and logistics industry, building a Stripe-like platform that modernizes financial services for transportation professionals. This Senior Full Stack Software Engineer role is critical to developing scalable, innovative financial technologies that simplify and optimize payment processes for fleet managers and drivers.
Responsibilities
- Technical Project Leadership: Lead complex, ambiguous technical projects from conceptualization to production, establishing scalable architectural foundations for early-stage products
- System Design: Design, develop, and maintain robust APIs, user-facing experiences, services, and systems with a focus on scalability and performance
- Strategic Decision Making: Make strategic trade-offs balancing business priorities, user experience, and system reliability
- End-to-End Development: Manage critical frontend, backend, and platform projects comprehensively, from initial design through operational deployment
- Payment Architecture: Develop and push architectural solutions capable of scaling to billions in annual payment volume with real-time risk management controls
- Cross-Functional Collaboration: Work closely with product and go-to-market teams to transform complex, ambiguous problems into elegant, efficient code solutions
Qualifications
What we look for.
Technical
Programming Languages
Strong proficiency in full-stack development, with experience in React, Ruby, and PostgreSQL
System Architecture
Ability to design scalable systems capable of handling high-volume financial transactions
API Development
Expertise in designing, building, and maintaining robust and efficient APIs
Education
Computer Science/Engineering Degree
Bachelor's or equivalent degree in Computer Science, Software Engineering, or related technical field preferred
Experience
Professional Experience
5+ years of professional software development experience in B2B or B2C SaaS products
Industry Expertise
Experience in FinTech, payments, or marketplace domains is highly advantageous
Skills
Required
Full Stack Development
Comprehensive expertise across frontend and backend technologies
Technical Rigor
Commitment to writing clean, well-tested, and well-documented code
Communication
Ability to communicate effectively across different time zones and teams
Preferred
FinTech Knowledge
Nice to haveUnderstanding of financial services, payment systems, and logistics technology
Startup Experience
Nice to havePrevious work in high-growth, fast-paced startup environments
Tech stack
Languages
Databases
Other
Compensation
Pay and benefits.
Base·USD 150,000 – 190,000
Equity·Stock options
Benefits
Equity Compensation
Stock options in a high-potential, venture-backed startup
Performance Bonus
Competitive bonus structure tied to individual and company performance
Health Insurance
Comprehensive medical, dental, and vision coverage
Professional Development
Budget for conferences, training, and continuous learning opportunities
Flexible Work Arrangement
Hybrid work model with 4 days in-office (San Francisco Bay Area or New York)
Process
Interview steps.
- 01
Initial Screening
HR phone screen to assess basic qualifications and cultural fit
- 02
Technical Assessment
Online coding challenge testing full-stack development skills
- 03
Technical Interviews
Multiple rounds of in-depth technical interviews with senior engineering team members
- 04
System Design Interview
Architectural discussion to evaluate candidate's approach to building scalable systems
- 05
Final Leadership Interview
Meeting with engineering leadership to assess overall fit and potential
Full posting
Original listing.
Our mission
The trucking and logistics industry provides the backbone of the economy. But the payments infrastructure on which it runs is broken. For the hard-working men and women of this sector, the existing suite of payment tools is outdated, difficult to use, prone to fraud, and saddled with shady fee structures. The incumbent players in this space often overlook the economic and practical needs of this user base.
We're changing that. AtoB is building Stripe for Transportation — modernizing the payments infrastructure for trucking and logistics. Supply chains rely on the timely movement of capital to function efficiently. Our end game is a world in which that capital movement occurs fairly, smoothly, and without delay. As we pursue that end game, we aim to center our customers in every way — offering them world-class customer experience and building products that work with and around the unique constraints of their daily lives. We build for fleet managers in the office and drivers on the road. We strive for products that are efficient, satisfying, and useful. Our customers enable our modern economy — they deserve it.
Our history and background
Our founding team has backgrounds in payments, working on autonomous vehicles at Cruise Automation, leading ops and growth for Uber, and building apps that were featured on the Apple app store. We have staff and senior engineers from Google, Uber, Meta, Shopify, Stripe, Chime, and other leading technology companies.
We have raised $125 million+ from investors such as General Catalyst, Elad Gil, Bloomberg Beta, Y Combinator, XYZ; founders and CEOs of companies such as Google (Eric Schmidt), Salesforce (Marc Benioff), Coinbase (Brian Armstrong), DoorDash (Tony Xu), Instacart, Gusto; strategic investors like Mastercard, Flexport and Samsara.
We were named to Forbes annual Next Billion-Dollar Startup List, and have just recently been selected to join the World Economic Forum as a Global Innovator.
About Us
Learn more about our mission, culture, and background on our Careers Page.
Responsibilities:
Lead efforts for often ambiguous technical projects, laying the groundwork for early-stage products to iteratively evolve and scale.
Design, build, and maintain APIs, user-facing experiences, services, and systems.
Make effective tradeoffs between business priorities, user experience, and reliability.
Work with critical frontend, backend & platform projects end-to-end—from design to production ops.
Push architecture that scales to billions in annual payment volume and real-time risk controls.
Work closely with product and GTM leads to turn ambiguous problems into elegant code.
Qualifications:
Have 5+ years of professional experience building B2B or B2C SaaS products (FinTech, payments, or marketplace a plus).
Thrive in zero-bureaucracy, high-ownership environments.
Balance speed with rigor—automated tests, clean abstractions, clear docs.
Can participate in architecture discussions and still dive deep into code (we use React, Ruby, Postgres—but great engineers pick up tools fast).
Communicate crisply across time zones.
This role is required to be in office 4 days/week (Mon-Thurs) either in San Francisco Bay Area or New York
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