Senior Software Engineer

Who we are: First Street is the standard for Climate Risk Financial Modeling. We use transparent and peer-reviewed methodologies to calculate the past, present, and future climate risk for every property in the world. We started working with the world’s leading climate scientists to create groundbreaking, climate-adjusted, property specific models over 8 years ago and haven’t stopped. 

Our mission: We exist to connect climate and financial risk. 

Our data: We create physics-based, deterministic models of flooding, wildfire and hurricanes, and advanced statistical models of extreme heat, air quality, drought, hail, severe convective storms, winter storms, and more. All of this data is used to create property-level financial risk metrics and macroeconomic variables to quantify the impacts of climate, property by property.

Our customers: We empower governments at the highest levels to make smart regulations, businesses to avoid bad investments, and everyday homebuyers to understand their personal risk from climate change. We are relied on every day by:

• Agencies ranging from the U.S. Department of Treasury to Fannie Mae
• The world's biggest banks such as Bank of America and Wells Fargo 
• Institutional investors like Nuveen and Blackstone 
• Millions of everyday users on Zillow, Redfin, Realtor.com, Homes.com, and more 

We believe:  With the right data, we can identify the problems, avoid bad investments, and implement solutions. This is why we have invested tens of millions of dollars into our science, data, people, and products and have raised tens of millions more to move even faster. Read more about our culture here and see what Climate Risk Financial Modeling is all about here. 

Come join us and use your talents to change the world.

Team & Role Overview

The engineering team at First Street is the backbone of our mission: using technology and data to help the world understand and adapt to climate risk. We’re an AI-native team building the backend services and infrastructure that power our global products—systems designed to scale, perform, and deliver data that matters.

As a Senior Software Engineer, you’ll help architect, build, and scale services that serve millions of users, integrate seamlessly with data pipelines, and support cloud infrastructure that enables our mission.

What You’Ll Do

• Design and build backend API services in Go that scale to millions of users.
• Architect and improve infrastructure to support global product launches.
• Partner with data operations to integrate pipelines into backend systems.
• Work closely with the product team to ensure capabilities match customer requirements
• Contribute to cloud infrastructure and reliability engineering.
• Lead by example—raising the bar on developer experience and team practices.
• Deliver features that empower customers and advance First Street’s mission.

Technologies We Use:

AWS, Go, Linux, Kubernetes, Mysql, Postgresql (+Postgis), Elasticsearch, Redis, Git, Docker, JavaScript, NodeJS, React JS, GraphQL, REST, and Python

What You’Ll Need:

• Deep experience in backend API development (with knowledge in GraphQL)
• Experience in systems integration
• Experience work with databases, either in Postgres or MySQL, including: debugging, optimizations, and queries
• Bachelor’s degree or relevant experience in Engineering, Computer Science, or Information Systems

What will make you stand out:

• Experience building and maintaining automated infrastructure
• Experience in an environment that adheres to SOC II and ISO 27001 Compliance Standards

Our anticipated US base salary compensation range for this role is $100,000-$180,000 plus competitive benefits package, which includes equity, 401(k), paid time off, paid parental leave, and comprehensive health benefits. Actual compensation will vary depending on factors such as work location as well as additional factors such as a candidate’s qualifications, skills, experience, competencies, and relevant education. Your recruiter can share more about the specific salary range for your location during the hiring process.

How We Work:

• Impact: We only focus on things that move the needle 
• Drive: We are driven by the role we play in connecting climate and financial risk 
• Ownership: This is our company and we act accordingly
• Urgency: We move quickly because the world depends on it 
• Resilience: We have a growth mindset in all that we do
• Competitive salary commensurate with experience 
• Ownership interest in the company via Employee Stock Option Plan 
• Hybrid Schedule with in-office work days on Monday, Wednesday and Thursday 

What We Offer:

• 15 vacation days along with 5 days for winter break office closure, 8 statutory company holidays, and 10 sick days 
• Health benefits covered at 100% for employee or a significant contribution for family plans 
• Vision and dental benefits with partial employee contribution
• 12 weeks of paid parental leave 
• Access to One Medical, Teledoc, HealthAdvocate, Kindbody, and Talkspace

• Company 401k Program

• Commuter Benefits

• Life Insurance

• Tech Startup Environment

• Weekly team meals and an office stocked with coffee and snacks 
• Working on the world’s biggest issue with other passionate professionals 

We are an equal opportunity employer and value diversity at our company. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.