Staff Machine Learning Engineer, Lime
Reinforcement Learning
CA$172-237k
Offers Equity & Bonus
Electric bike and scooter rentals
Open for applications
Electric bike and scooter rentals
1001+ employees
Open for applications
CA$172-237k
Offers Equity & Bonus
1001+ employees
Company mission
To build a future where transportation is shared, affordable and carbon-free.
Role
Who you are
- 6+ years of industry professional software engineering experience deploying machine learning methods at scale in production level systems
- 2+ years of experience in Reinforcement Learning with expertise implementing customized reward functions, policy optimization, and multi-armed bandits
- 2+ years of backend development experience (Ruby on Rails is a plus)
- Fluency in Python and experience with modern ML frameworks (e.g., PyTorch, TensorFlow) and data tools (e.g. SQL, pandas, spark, airflow)
- Experience with cloud computing services or platforms (preferably AWS)
- Experience with both Snowflake and Sagemaker is a plus
- If you want to make an impact, Lime is the place for you. Not sure if you meet all the qualifications? If this role excites you we encourage you to apply
What the job involves
- We’re looking for a Machine Learning Engineer to design, deploy, and own production machine learning models that drive Lime’s core pricing decisions
- You’ll design and own production ML systems that make real-time pricing decisions under uncertainty—balancing rider demand, fleet supply, regulatory constraints, and business objectives across millions of rides
- This role sits at the intersection of ML modeling, backend systems, and product decision-making, with direct ownership of models that ship, learn, and evolve in production
- You’ll work on ambitious initiatives, scale successful products, and help define the future of pricing at Lime
- Translate complex business problems into solutions that leverage end-to-end, production-level machine learning systems
- Develop, iterate on, and productionize machine learning models, owning both model logic and supporting systems
- Implement and own backend pricing services and APIs consumed by the Lime App
- Architect and build scalable, reliable platforms and services that power pricing decisions and enable new product initiatives
- Build trust with leadership to influence the company's pricing strategy through reasoning and communication of model performance and technical vision
- Collaborate with other Software Engineers and Data Scientists to raise the bar on ML standards and Engineering Excellence
- Mentor and support engineers on the team, helping grow technical depth and develop future leaders
Our take
In recent years, electric-powered mobility companies have attracted an extraordinary amount of interest and funding, in part due to rising eco-friendly sentiment, and in part because of the race to "find the next Uber". Lime is one such company, that has rapidly scaled across multiple geographies to be a key player in the fight for market leadership.
Lime, along with its competitors, has had to grapple with regulation in many of its target markets, but nonetheless has steadily increased its footprint. Since its launch, the company has facilitated millions of trips, making it one of the biggest companies of its kind. Interestingly, the CEO has stated that "cars are our true business rivals—not other scooter companies", suggesting that its biggest business challenge will be to get families to give up their second cars.
With a presence that spans an impressive number of regions - in 2023, Lime began operating in Qatar - the company has cemented itself in the micromobility market and stands to profit from the increasing popularity of these types of services. A substantial increase in ridership enabled Lime to achieve "free cash flow positivity" two years in a row, with suggestions it will pursue a US IPO in 2027.
Freddie
Company Specialist at Welcome to the Jungle
Insights
17% employee growth in 12 months
Company
Funding (last 2 of 7 rounds)
Nov 2021
$523m
CONVERTIBLE
May 2020
$170m
SERIES E
Total funding: $1.5bn
Company benefits
- Disability insurance
- 401(k)
Company HQ
The East Cut, San Francisco, CA
Leadership
Toby
(Co-Founder & Board Advisor)Founder and CEO of ZERO&. Was a Marketing Manager at Pepsi for 6 years before doing an MBA at Berkeley. Moved into consulting and VC for 5 years before starting Lime.
Brad
(Co-Founder & Chairman)VP of Business Development at Tencent for 8 years. Managing Partner of a VC firm for 3 years, where he worked with Toby. Has an MBA from Berkeley.
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