Trading Systems Engineer (Affiliated Trading)

Kalshi; New York (NY); On-site; USD 120,000 - 190,000; Full time

Job summary

Kalshi Trading is seeking a backend engineer to build and maintain the infrastructure that powers our trading operations. You will influence the architecture, design robust APIs, and own components from data processing to order management.

We value engineers who can write concurrent code, work with Postgres, and are comfortable in AWS, with proficiency in Golang, Rust, or C++. You’ll join a small, ambitious team shaping the future of prediction markets.

Qualifications

• Minimum 3 years of professional backend engineering experience.
• Experience building trading systems including order management.
• Experience with high-performance event-driven architectures and APIs.
• Experience writing concurrent code.
• Strong relational DB experience (PostgreSQL).
• Familiarity with AWS stack (RDS, ECS).
• Proficiency in Golang, Rust, or C++.

Responsibilities

• Build and maintain Kalshi Trading infrastructure powering trading operations.
• Design robust APIs and order-management components for high availability.
• Collaborate to chart your path and influence Kalshi Trading's growth.

Skills

Backend engineering

Event-driven systems

High performance APIs

Concurrency

PostgreSQL

AWS (RDS, ECS)

Golang

Rust

C++

Tools

Kafka

Job description

What is Kalshi?

Kalshi has defined a new category: prediction markets. Kalshi allows people to trade on the outcome of any events and turn any question about the future into a financial asset. Kalshi fought for years and legalized prediction markets in the US for the first time in history, is currently the fastest growing financial market in America, and has thousands of markets across politics, economics, financials, weather, tech, AI, culture and more.

We believe prediction markets have the potential to be the largest financial market because they turn anything into a financial position.

• Our vision: well… build the largest financial market on the planet.

• Our mission: bring more truth to the world through the power of markets.

Our culture is simple: we hire really talented people, work really hard, and enjoy the climb. We are looking for ambitious and exceptional people to join our (relatively small) team to help us build the next generation of financial markets.

Role Roadmap

Kalshi Trading is an affiliated trading entity that operates across all different categories on Kalshi. We are looking for backend engineers who can build and maintain the infrastructure underlying our trading operations. The ideal candidate will have the following attributes:

• At least 3 years of professional experience as a backend engineer

• Experience directly building trading systems including order management

• Experience building robust high performance event-driven systems and APIs

• Experience writing concurrent code

• Very comfortable with relational databases (e.g. Postgres)

• Familiarity with the AWS stack (especially RDS and ECS)

• Proficiency in one of: Golang, Rust, C++

In addition to the above, the ideal candidate will also potentially have one or more of these attributes:

• Familiarity with stream processing (Kafka)

• Familiarity with frontend development

• Familiarity with machine learning, neural networks, or generative AI including LLMs

• Experience trading on Kalshi or other prediction markets

The rest of what the role looks like is up to you - a big part of our approach is that you get to chart your path as we grow and evolve. You will have a lot of influence in shaping what both your role and the activity of Kalshi Trading look like as we grow. There's a lot of green field to conquer, we trust that you'll make a lot of it your own.

Our Culture

Meritocracy is at our core, and we value people who take ownership and figure (usually hard) things out. We dream big. We love our craft deeply and are proud of what we put out in the world. We are committed to our vision of building something big… but also useful: a product that brings more truth through the power of markets.

Kalshians are Kalshi’s most important asset: we pick Kalshians carefully, so we trust them fully on day 1.

Commitment to Equal Opportunity

Kalshi is committed to creating a culture of inclusion and belonging, and we are proud to be an equal opportunity employer. We believe it is our collective responsibility to uphold these values and encourage candidates from all backgrounds to join us in our mission. All qualified applicants will be treated with respect and receive equal consideration for employment without regard to race, color, creed, religion, sex, gender identity, sexual orientation, national origin, disability, uniform service, veteran status, age, or any other protected characteristic per federal, state, or local law. If you are passionate about what you do and want to use your talents to support your mission and values, we’d love to hear from you.