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Runwise

via Greenhouse

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Senior Python Engineer

Anywhere
full-time
Posted 9/30/2025
Direct Apply
Key Skills:
Python
Multithreading
Climate Control Algorithms
Data Processing
Energy Efficiency
Software Development
Large Scale Systems
Problem Solving

Compensation

Salary Range

$140K - 190K a year

Responsibilities

As a Senior Python Engineer, you will design, test, and implement core software for building systems. You will contribute to a Python application that processes live data and executes climate control algorithms.

Requirements

You should have 5+ years of experience writing multithreaded code in Python and a passion for building energy-efficient products. Experience in modifying large-scale software systems is also required.

Full Description

Runwise is looking for a Senior Python Engineer focusing on controlling building systems to join one of the largest and fastest-growing energy tech companies in the US. Runwise has offices in New York and Boston but is a remote-first product/engineering company, and has been since its creation. As a Senior Python Engineer at Runwise, you will be responsible for helping design, test, and implement the core software embedded in our controls in 7500+ buildings. This is a continuously running application that evaluates rules and gathers data to support them in order to make decisions for whether a building system should be turned on or adjusted. You will have the opportunity to help a variety of property companies from large well-known owners (like Related, Blackstone, Douglas Elliman, Lefrak) to individual co-ops and condos effectively run their heating, cooling, electric, and water systems more efficiently while making tenants more comfortable. Runwise (www.runwise.com) is a fast-paced, customer-focused climate-tech startup that controls and runs the key energy systems (heating, water, etc…) in 7500+ buildings throughout the US. Runwise’s unique hardware and software service significantly reduces energy usage, substantially lowering costs and carbon output. As of today, Runwise’s technology takes the equivalent of 80,000 cars worth of carbon emissions off the road each year. Responsibilities will include, but are not limited to: Being a contributor to our Python application powering our computers that execute climate control algorithms and process live data from sensor networks in buildings Writing multithreaded Python code that enables to process inputs and execute algorithms that make decisions on the next action to perform Writing code that efficiently and intelligently processes billions of data points per year Who you are: You have 5+ years of hands on experience writing multi threaded code in Python You are passionate about building new products and coming up with solutions that increase energy efficiency Experience modifying by adding new features in a large scale software system You are passionate about working with systems at scale Salary: $140,000-$190,000 (varied on experience and market rate) What you believe: No job is too small. Sincerity builds trust. Setbacks fuel progress. Efficiency is vital. Benefits: Medical, dental, and vision insurance HSA & FSA options Paid Parental Leave Access to Talkspace & Health Advocate Flexible PTO Commuter Benefits 401K Company paid life insurance Voluntary supplemental life insurance Free in-office lunch on Wednesdays Hybrid work environment Summer Fridays Monthly L&D Series Employee Resource Groups (e.g. DEIB Committee, Run Club) This is an excellent opportunity to join a fast-growing company and create a career path beyond this initial role. You will be surrounded by talented people where you will learn about real estate and software/managed services sales at a very fast growing tech company, whilst having a tangible impact on reducing carbon emissions across the country.

This job posting was last updated on 10/1/2025

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