Fullstack Engineer

Koalafi

Virginia (MN)

On-site

USD 90,000 - 120,000

Full time

14 days+

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Benefits offered by this job

Comprehensive medical, dental, and vision coverage

20 PTO days + 11 paid holidays

401(k) retirement with company matching

Student Loan & Tuition Reimbursement

Commuter assistance

Parental leave (maternal + paternal)

Inclusion and Associate Engagement Programs

Job summary

Koalafi in Virginia, US, is seeking Software Engineers to design and build scalable backend services and APIs. This role involves working on customer-facing applications and collaborating with product teams.

The ideal candidates will have 2–5 years of experience and proficiency in Golang, REST APIs, and modern frontend technologies like React. Koalafi offers comprehensive benefits including medical coverage, PTO, and a 401(k) retirement plan.

Qualifications

2–5 years of professional software engineering experience.
Experience building backend services using Golang.
Working knowledge of REST APIs and API testing tools.

Responsibilities

Design, develop, and maintain scalable backend services and APIs.
Build integrations with internal and third-party systems.
Participate in Agile development processes.

Skills

Backend services development

REST APIs

Frontend frameworks like React

Golang

Cloud platforms (AWS)

CI/CD practices

Communication skills

Tools

Kubernetes

NoSQL databases

Job description

At Koalafi, we believe in a world where no one has to put an important purchase on hold. That’s why we’re making it easier for more people to pay for big purchases over time.

Retailers across the country rely on us to offer flexible lease-to-own financing to their non-prime consumers, while increasing sales and strengthening customer loyalty. Their 2M+ customers love us because we provide a flexible way for them to make payments and give them an opportunity to improve their credit. Our 200+ Koalafi teammates enjoy inspiring and challenging work that accelerates their careers.

Interested in learning more about how we’re transforming the financing experience and joining our team?

About the Role

Koalafi is looking for Software Engineers to help build and scale the products and platforms that power our financing solutions. As part of a cross‑functional team of product managers, engineers, and technical leaders, you’ll contribute to customer‑facing applications, internal tools, and backend services that support critical business functions across the company. We’re seeking engineers who enjoy solving complex problems, building reliable systems, and collaborating closely with teammates to deliver meaningful business impact. Depending on team placement, you’ll work on a mix of new product development, platform enhancements, system integrations, and modernization efforts that help us deliver a seamless experience for customers, merchants, and internal stakeholders.

This role offers the opportunity to work across a modern technology stack, contribute to both new and existing systems, and help shape solutions in a fast‑moving environment. Success in this position requires curiosity, strong technical fundamentals, and the ability to navigate unfamiliar codebases while continuously improving the systems around you.

What You’ll Do

Build and Deliver

Design, develop, and maintain scalable backend services and APIs
Build integrations with internal and third‑party systems
Contribute to customer‑facing applications and internal tools using modern frontend technologies
Write clean, maintainable, and well‑tested code
Participate in the design and implementation of distributed systems, workflows, and event‑driven architectures
Support initiatives that improve performance, reliability, and scalability across the platform

Collaborate and Contribute

Partner with Product, Design, Compliance, and Engineering teammates to deliver high‑quality solutions
Participate in technical design discussions and architecture reviews
Conduct and receive code reviews with a focus on continuous improvement
Contribute actively to Agile development processes, including planning, standups, retrospectives, and backlog refinement
Share knowledge and collaborate across teams to solve complex business and technical challenges

Maintain and Improve

Implement monitoring, alerting, and observability best practices
Support operational excellence through troubleshooting, incident response, and root cause analysis
Identify technical debt and opportunities for system improvements
Contribute to security, compliance, and audit requirements as appropriate
Leverage modern development tools, including AI‑assisted engineering tools, to improve productivity and code quality

About You

2–5 years of professional software engineering experience
Experience building backend services using Golang
Working knowledge of REST APIs, HTTP/JSON, authentication mechanisms, and API testing tools
Experience developing web applications using modern frontend frameworks such as React and TypeScript
Familiarity with cloud platforms and containerized environments, preferably AWS and Kubernetes
Understanding of software engineering best practices including testing, code reviews, and CI/CD
Experience working with relational and/or NoSQL databases
Ability to navigate existing codebases and contribute effectively to both new and established systems
Strong communication and collaboration skills
Desire to learn, grow, and take ownership of technical solutions

Preferred Qualifications

Experience with event‑driven architectures and asynchronous messaging patterns
Experience in fintech, lending, payments, e‑commerce, or other highly regulated industries
Familiarity with observability and monitoring platforms
Experience working with microservices architectures
Knowledge of cloud security and secrets management
Interest in leveraging AI tools to accelerate software development

Benefits

At Koalafi, you will have a direct impact on our products and help shape the company’s success. We offer competitive compensation & benefits packages to keep you at your best: