Senior Software Engineer, Checkr Trust (Ruby / Rails)

About Checkr

Checkr is building the data platform to power safe and fair decisions. Established in 2014, Checkr’s innovative technology and robust data platform help customers assess risk and ensure safety and compliance to build trusted workplaces and communities. Checkr has over 100,000 customers including DoorDash, Coinbase, Lyft, Instacart, and Airtable. Checkr is recognized on Forbes Cloud 100 2025 List and is a Y Combinator 2024 Breakthrough Company.

Checkr Trust

Checkr Trust is building safer communities by providing our customers with risk signals about its users. Every year, our team provides insights on tens of millions of users across multiple verticals : online dating, caregiving, car rental, short‑term rentals and many more. We acquire, analyze, and deliver insights in smart, scalable ways that help organizations identify and mitigate risk. We are part of the Checkr start‑up lab : we operate with the speed of a small startup, while enjoying the leverage and resources of a known technology brand.

Senior Full Stack Software Engineer

Since launching, we’ve seen significant growth and we are looking for a Senior Full Stack Software Engineer to play a pivotal role in the continued growth of our startup.

You are the right fit if :

You have strong product opinions and aren’t afraid to voice them.

You are comfortable with ambiguity and rapidly changing priorities.

You value in‑person collaboration and fast iteration with the team.

You know when to optimize for speed versus striving for perfection.

You are comfortable working access the entire software stack.

You take full ownership—from idea to execution to real customer and business impact.

Responsibilities

Work closely with customers, engineers, and leaders to design, build, and launch new products.

Take full ownership of the entire process of developing end‑to‑end applications – from shaping the idea to delivering the finished application.

Build and improve APIs, including integrating with third‑party services to expand what our products can do.

Embrace a customer‑centric, product‑first approach – partner directly with customer success, customers and stakeholders to better understand their needs and turn those into useful features.

Keep code reliable and easy to maintain with solid testing, thoughtful reviews, and good practices.

Run and measure product experiments, using what you learn to guide future development.

Building scalable APIs and asynchronous event‑based architecture that can reliably handle very high traffic.

What you bring

BS / MS degree in either computer science or electrical engineering.

Have founded or held early roles at successful fast‑paced startups.

6+ years of full stack software development experience.

Advanced knowledge in Ruby (Ruby on Rails) / JavaScript (React), or similar languages / frameworks.

Amazing product sense – we will ask you how the product should look like.

Experimentation mindset – autonomy and empowerment to validate a customer need, get team buy‑in, and ship a rapid MVP.

Experience building scalable technical architecture that can scale to 10mm+ users (including observability tooling, container orchestration, etc).

Nice to have

Experience with trust & safety, IDV, background check products or criminal data.

Experience with data analysis and processing.

Experience building and working with scrapers and scraping technology.

We are committed to leveling the playing field and welcome all interested candidates to apply, even if you don’t meet every qualification outlined above.

What you get

A fast‑paced and collaborative environment.

Learning and development allowance.

Competitive compensation and opportunity for advancement.

100% medical, dental, and vision coverage.

Up to $25,000 reimbursement for fertility, adoption, and parental planning services.

Flexible PTO policy.

Monthly wellness stipend, home office stipend.

Working at a startup within a startup.

Pay Transparency Disclosure

One of Checkr’s core values is Transparency. To live by that value, we’ve made the decision to disclose salary ranges in all of our job postings. We use geographic cost of labor as an input to develop ranges for our roles and as such, each location where we hire may have a different range. If this role is remote, we have listed the top to the bottom of the possible range, but we will specify the target range for an exact location when you are selected for a recruiting discussion. For more information on our compensation philosophy, see our website.

On‑target Earnings OR Base Salary range (San Francisco, CA) $173,000 — $215,000 USD

At Checkr, we believe a hybrid work environment strengthens collaboration, drives innovation, and encourages connection. Our hub locations are Denver, CO, San Francisco, CA, and Santiago, Chile. Individuals are expected to work from the office 2 to 3 days a week. Starting January 2026, hub‑based employees will be expected to work from the office 3 days per week. In‑office perks are provided, such as lunch four times a week, a commuter stipend, and an abundance of snacks and beverages. A relocation stipend may be available for those willing to relocate to a Checkr hub location.

Equal Employment Opportunities at Checkr

Checkr is committed to building the best product and company, which requires hiring talented and qualified individuals with a diverse set of perspectives and lived experiences. Checkr believes in hiring people of all backgrounds, including those whose histories are impacted by the justice system in accordance with local, state, and / or federal laws, including the San Francisco’s Fair Chance Ordinance.

• Legitimate Checkr emails will always include our official domain name after the @ symbol (e.g., name@checkr.com or name@ext.checkr.com).

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