9 software engineering intern jobs at 6 companies in Ballwin, MO

PromotedHiringCafe
Founding Full-stack / Product Engineer
Cupertino, CA, US
$130k-$300k/yr On-SiteFull Time
HiringCafe
HiringCafe: Building a 100× better job search engine to take on Indeed and LinkedIn.
Help us build a 100× better job search engine. We need a full-stack engineer with great taste, sharp fundamentals, and a track record of shipping polished product on React/Next.js plus a real backend (Firebase, Elasticsearch, Redis, Stripe).
React, Next.js, TypeScript, Firebase, Elasticsearch, Redis, Stripe
3w
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Engineering Manager
High Ridge, Missouri, United States
OnsiteFull Time
The H-J Family of Companies
The H-J Family of Companies: Manufactures and supplies electrical components for global power distribution systems.
15+ YOEBachelor's in Electrical or Mechanical Engineering required (Master's preferred); 15+ years electrical industry experience; 10+ years field applications experience with power products; 2+ years international experience; engineering leadership; simulation/design software experience; willing to travel up to 15%.
3w
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Engineering Manager
High Ridge, Missouri, United States
OnsiteFull Time
H-J Family of Companies
H-J Family of Companies: A global designer and manufacturer of products for the transformer and switchgear industries that values innovation, quality, and continuous improvement.
15+ YOEBachelor's in Electrical or Mechanical Engineering required (Master's preferred); 15+ years electrical industry experience, 10+ years field applications with power products, 2+ years international experience, engineering team leadership, simulation/design software experience, willing to travel up to 15%.
3w
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Engineering Manager
High Ridge, Missouri, United States
OnsiteFull Time
The H-J Family of Companies
The H-J Family of Companies: Manufactures and supplies electrical components for global power distribution systems.
15+ YOEBachelor's in Electrical or Mechanical Engineering required (Master's preferred), 15+ years electrical industry experience, 10+ years field/power product experience, 2+ years international experience, proven engineering team leadership, simulation/design software experience, willingness to travel up to 15%.
2mo
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Lead Software Engineer
O'Fallon, Missouri, United States
$140k-$231k/yr OnsiteFull Time
Mastercard
MastercardNYSE: MA: Global payment processing and financial technology service provider.
Lead software design and architecture; build internal developer platforms; ensure secure, scalable, and high-performance software.
React, TypeScript, Backstage, AWS, Kubernetes, Terraform, CloudFormation, Splunk, CI/CD
2mo
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IT Intern
St. Louis or Fenton
OnsiteInternship
Tacony
Tacony: Manufacturer and distributor of sewing and floor care products.
2+ YOEPursuing a Bachelor's degree in CS/IS/Software Engineering/MIS; 2 years total work experience with at least 1 year in related IT field; strong communication; curious problem solver.
C#, DotNET, Epicor ERP, Python, Make, Zapier, Cursor, Replit, ChatGPT, AI tools
2w
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Performance Engineer Intern, Systems Software- Fall 2026
St. Louis, Missouri, United States
$20-$71/hr OnsiteFull Time, Internship
NVIDIA
NVIDIANASDAQ: NVDA: Designs GPU-accelerated computing and artificial intelligence hardware.
Enrolled in a Bachelor's in CS/CE/SE or related; experience with Python and Linux; familiarity with ML lifecycle; teamwork and CS fundamentals; interest in performance benchmarking and containers.
Python, Linux, PyTorch, CUDA, cuOPT, CUTLASS, cuDNN, Kubernetes, Slurm
1w
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Senior Software Product Manager
St. Louis, Missouri, United States
OnsiteFull Time
Rapsodo
Rapsodo: Provides portable sports performance tracking and analytics devices.
5+ YOE2+ MgmtBachelor's degree, 5+ years product management on B2B/B2B2C software with 2+ years management; experience writing PRDs, sprint prioritization, shipping features, working with international engineering, using AI tools, and people management.
AI tools
2w
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Performance Engineer Intern, Systems Software- Fall 2026
St. Louis, Missouri, United States
$20-$71/hr OnsiteFull Time, Internship
NVIDIA
NVIDIANASDAQ: NVDA: Designs graphics processing units and artificial intelligence hardware.
Enrolled in a Bachelor's in CS/CE or related; experience with Python and Linux CLI; familiarity with ML lifecycle, teamwork, and interest in performance benchmarking and GPU-accelerated workloads.
Python, Linux, PyTorch, CUDA, cuOPT, CUTLASS, cuDNN, Kubernetes, Slurm
2mo
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Project Manager I, II, III - Planning & Programming Engineer
Creve Coeur, Missouri, United States
OnsiteFull Time
St. Louis County
St. Louis County: Provides essential public services and governance for St. Louis County.
Bachelor's degree in Civil Engineering or related field; FE exam and Engineering Intern for II; Registered Professional Engineer or related certification for III; GIS and transportation planning software proficiency.
ArcGIS, MicroStation, OpenRoads, Autoturn, Synchro, Microsoft Excel