Software Engineer - Customer Integrations (API)

Guarantors Technology Service Inc; New York (NY); Hybrid; USD 125,000 - 145,000; Full time

Benefits offered by this job

Health savings account

Generous PTO

401(k)

Paid parental leave

Disability insurance

Flexible spending accounts

Job summary

TheGuarantors is seeking a Software Engineer - Customer Integrations (API) to help build and maintain a scalable microservices platform in a hybrid NYC setting. You will own backend work powering client integrations and collaborate across teams to deliver robust features.

The ideal candidate will bring technical expertise, work with engineering leaders on impactful features, and contribute end‑to‑end projects in a fast‑growing fintech environment.

Qualifications

• 2+ years of building backend services with common languages.
• Exceptional interpersonal skills.
• Solid understanding of API concepts and designs.
• Understanding of SQL and relational databases.
• Familiarity with modern web infrastructure components and how to manage them.
• Understanding of system design, data structures, and algorithms, with ability to evaluate design documents.
• Experience with cloud providers and IaC tooling such as Terraform.

Responsibilities

• Build and maintain highly scalable backend services and APIs that power developer‑facing platform capabilities.
• Develop secure, well‑documented, versioned APIs with a strong emphasis on developer experience, consistency and usability.
• Work on projects from planning to delivery independently.
• Partner with Engineering leaders on ideation and implementation.
• Collaborate across multiple tech teams to develop impactful features.

Skills

Go

Java

Python

C#

API design

SQL

Cloud platforms

Terraform

Tools

Terraform

AWS

Azure

GCP

Job description

Software Engineer - Customer Integrations (API)

TheGuarantors is a fintech company helping multifamily owners and operators mitigate leasing risk while expanding access for renters. With a deep understanding of owner, operator, and renter needs, we believe renters deserve better access to the home of their choice and operators deserve greater protection and growth opportunities. That’s why we’re leveraging our real estate expertise and using AI-driven renter underwriting to help operators qualify renters faster while mitigating the financial risk of renter default. With $7B+ in lease value protected, we work with 9 of the country’s top 10 operators, are the #1 lease guarantee provider nationwide, and have consistently been named one of Inc. 5000’s fastest-growing companies, one of Forbes’ Best Startup Employers, and one of Deloitte’s Technology Fast 500

The Role

A Software Engineer is responsible for building and maintaining a scalable microservices platform. This role is for the Customer Integrations team and will be responsible for enabling third‑party client integrations.

The ideal candidate will bring technical expertise, will partner with Engineering leaders on building impactful features, collaborate with other tech teams and build projects end‑to‑end.

Location

This is a hybrid role based in NYC.

• Build and maintain highly scalable backend services and APIs that power developer‑facing platform capabilities
• Develop secure, well‑documented, versioned APIs with a strong emphasis on developer experience, consistency and usability.
• Work on projects from planning to delivery independently.
• Partner with Engineering leaders on ideation and implementation.
• Collaborate across multiple tech teams to develop impactful features.

Requirements

• Professional experience working within software engineering teams.
• Exceptional interpersonal skills.
• 2+ years of building backend services with common systems languages (Go, Java, Python, C#). Go experience is not a requirement, but candidates must be open to learning and using it.
• Solid understanding of API concepts and designs.
• Understanding of SQL, experience with relational database.
• Familiarity with modern web infrastructure components (e.g. caching, serverless, API gateways, etc.) and how to manage them.
• Understanding of system design, data structures, and algorithms, and experience creating and evaluating technical design documents.
• Experience with cloud providers such as AWS, Azure, GCP, OCI and managing infrastructure assets using IaC tooling such as Terraform.

Nice to Have

• Have worked in a fast‑paced, regulated, client‑facing environment
• Experience designing and building public APIs and developer platforms
• Opportunities to make an impact within a fast growing company
• Health savings account with employer contribution
• Generous PTO and paid holidays
• 401(k)
• Paid parental leave
• Company sponsored short and long term disability
• Flexible spending accounts (healthcare, dependent care, commuter)

This is an individual contributor role, internally leveled as IC2.

The annual U.S. base salary range is $125,000–$145,000. Base salary does not include other forms of compensation or benefits. Individual pay is determined by work location, skills, experience, and other job‑related factors, which will be discussed during the hiring process.

TheGuarantors is an Equal Opportunity Employer. We celebrate diversity and are committed to an inclusive environment for all.