AtoB

Senior Software Engineer, Full Stack

AtoB2 months ago
Location

San Francisco Bay Area

Type

Full Time

Salary

USD 150,000 – 190,000

Level

Senior

Role

Full Stack Engineer

Posted

Jan 21, 2026

Full TimeSenior

The role

Summary

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.

What you'll do

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

What we look for

Technical

Programming LanguagesStrong proficiency in full-stack development, with experience in React, Ruby, and PostgreSQL
System ArchitectureAbility to design scalable systems capable of handling high-volume financial transactions
API DevelopmentExpertise in designing, building, and maintaining robust and efficient APIs

Education

Computer Science/Engineering DegreeBachelor's or equivalent degree in Computer Science, Software Engineering, or related technical field preferred

Experience

Professional Experience5+ years of professional software development experience in B2B or B2C SaaS products
Industry ExpertiseExperience in FinTech, payments, or marketplace domains is highly advantageous

Skills

Required skills

Full Stack DevelopmentComprehensive expertise across frontend and backend technologies
Technical RigorCommitment to writing clean, well-tested, and well-documented code
CommunicationAbility to communicate effectively across different time zones and teams

Nice to have

FinTech KnowledgeUnderstanding of financial services, payment systems, and logistics technology
Startup ExperiencePrevious work in high-growth, fast-paced startup environments

Compensation & benefits

Salary

USD 150,000 – 190,000 (annual)

Stock options

Available

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)

Interview process

  1. 1
    Initial Screening — HR phone screen to assess basic qualifications and cultural fit
  2. 2
    Technical Assessment — Online coding challenge testing full-stack development skills
  3. 3
    Technical Interviews — Multiple rounds of in-depth technical interviews with senior engineering team members
  4. 4
    System Design Interview — Architectural discussion to evaluate candidate's approach to building scalable systems
  5. 5
    Final Leadership Interview — Meeting with engineering leadership to assess overall fit and potential
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AtoB

AtoB

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AtoB is a fintech company that provides financial solutions for the transportation and logistics industry, with a particular focus on small to medium-sized trucking companies. The company offers services including fuel cards, lines of credit, and other financial products designed to help fleet operators manage their cash flow and operating expenses more efficiently. AtoB operates in the commercial transportation sector, serving as a financial services provider that understands the unique needs of independent truckers and logistics businesses.

San Francisco, USAFounded 2019atob.com

Tech Stack

Languages
ReactRuby
Databases
PostgreSQL
Other
Payment Infrastructure
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