Technical Courses
Master technical skills with hands-on learning
Develop job-relevant technical skills on a platform used by over one million learners worldwide.
Less watching, more doing
Combine interactive practice, real-world scenarios, and AI coaching for better skills development.
Turn lessons into lasting skills
Keep technical skills sharp, stay competitive, and maintain momentum in fast-changing fields.
Upskill faster
Shorten the time to proficiency by combining hands-on work with feedback that reinforces learning as it happens
Make learning stick
Engage learners with gamified, job-relevant learning that improves learning retention by up to 3x.
Stay market-ready
Develop in-demand technical skills through regularly updated courses aligned with evolving roles and industry expectations.
Close skills gaps
Keep teams proficient in emerging technologies through continuous skills development.
Practice beats passive
Build technical skills that learners retain, apply, and build upon with CodeSignal.
higher skill retention with practice-based learning
of employees say theory-first learning fails to build usable skills
of learners disengage without timely feedback
of learners don’t finish typical online courses
One platform. Many paths.
From programming fundamentals to advanced system design, learning paths cover a broad range of technical skills.
Skills
Practice types
Roles
- Programming fundamentals
- Computer Science fundamentals
- Software development practices
- Software design and architecture
- System design and architecture
- Debugging and troubleshooting
- Security fundamentals and secure coding practices
- API design, integration, and development
- Server-side programming and back-end development
- Deployment, cloud infrastructure, and DevOps
- Containerization and orchestration
- Monitoring and observability
- Performance optimization and scalability
- Relational databases and SQL
- Data storage and management
- Data querying and retrieval
- Data cleaning and preprocessing
- Exploratory data analysis and visualization
- Mathematics and statistics
- Machine learning fundamentals and core principles
- Machine learning and predictive modeling
- Model evaluation, validation, and selection
- Model deployment and serving (MLOps)
- Large language models (LLMs)
- Data privacy, ethics, and governance
- …and more
- Bug fix
- Conversation
- Filesystem
- Filesystem Frontend
- Matrix
- Output only
- Progressive Filesystem
- Progressive Filesystem Frontend
- Progressive Single Function
- Quiz
- Recovery
- Simple Frontend
- Single-Function
- SQL
- Whiteboard
- Writing
- Early Talent
- Back-end Engineer
- Front-end Engineer
- Full-stack Engineer (back-end heavy)
- Full-stack Engineer (front-end heavy)
- Quality Assurance Engineer
- Software Engineer in Test
- Mobile Engineer – iOS
- Mobile Engineer – Android
- Mobile Engineer – React Native
- Software Architect
- Database Administrator
- Data Analyst
- Data Scientist
- Machine Learning Engineer (Data Focus)
- Data Engineer
- Big Data Engineer
- Prompt Engineer
- NLP Engineer
- AI Research Scientist
- CUDA/GPU Kernels Engineer
- DevOps Engineer
- Site Reliability Engineer (SRE)
- Cloud Platform Engineer (AWS)
- Cloud Platform Engineer (GCP)
- Cloud Platform Engineer (Azure)
- Cybersecurity Analyst
- …and more
Popular technical courses
Explore some of the most popular learning paths used to build technical skills.
Introduction to Programming with Python
Start your Python programming journey with this travel-themed learning path built for beginners. Progress from “Hello, World!” to loops and functions over a series of 5 fun courses.
Full-Stack Engineering with JavaScript
Start your journey toward full-stack development using JavaScript for both front-end and back-end work. Progress from core concepts to building complete, functional applications.
Comprehensive Introduction to Front-End Engineering
Begin with no prior experience and learn the foundations of front-end development. Build skills in HTML, CSS, and JavaScript to create interactive, user-friendly websites.
Journey into Data Science with Python
Build a strong foundation in data science using Python. Learn the tools and techniques needed to turn raw data into meaningful insights.
Building GenAI Applications with AWS
Learn how to build GenAI applications on AWS using Bedrock. Apply guardrails, connect your data with RAG, create agent-based workflows, and deploy to the cloud.
JavaScript Programming for Beginners
Start learning JavaScript through a beginner-friendly path. Covering JavaScript syntax and fundamental programming concepts, it sets the stage for further coding exploration.
Implementing AI Algorithms from Scratch
Build a deep understanding of machine learning by implementing classic algorithms from scratch without relying on external libraries like SK-learn.
Building a Chatbot with Flask and OpenAI
Learn how to build AI-powered chatbots with Python, Flask, and OpenAI. Create intelligent conversations, design responsive interfaces, and develop a complete web application.
Mastering Cloud Engineering with GCP and Python
Build cloud engineering skills using GCP and Python. Learn to automate Cloud Storage, Firestore, Pub/Sub, and secrets using Google Cloud Python SDKs.
Real teams getting real results
Discover how Instacart, Nextdoor, and other innovators use CodeSignal to hire smarter, learn faster, and grow stronger.
By incorporating CodeSignal into our process and having a large number of folks opt into it, either passive candidates or applicants, we’re able to free up roughly 40 to 60% of our engineers’ time.
Michael Leggett
Tech Recruiter at Outreach
Partnering with CodeSignal has helped us to manage a very high volume of interest from candidates in our process and quickly assess their technical acumen, without using a ton of engineering hours.
Nadia Abouzaid
Head of Diversity Talent Programs at Asana
CodeSignal’s experiential learning platform fast-tracks skill mastery beyond what’s possible with traditional methods. It’s next-gen AI learning done right.
Josh Bersin
Josh Bersin Company
Works with what you use
Talk to sales
Ready to close technical skill gaps?
Explore more
Discover more ways to assess, build, and grow skills with CodeSignal.
Business Courses
Develop critical business skills like problem solving and negotiation through hands-on practice and guided feedback.
Technical Assessments
Benchmark technical skills with job-aligned assessments to understand current proficiency and where learning can help.
AI Skills Assessments
See how candidates work with AI in job-relevant scenarios, from foundational understanding to real-world application.
Frequently asked
questions
What are CodeSignal Technical Courses?
Technical Courses are practice-based learning paths that build job-relevant technical skills through hands-on simulations, real-world scenarios, and AI-powered coaching. Unlike video-heavy courses, learners spend most of their time applying concepts rather than passively watching content.
How is this different from other online learning platforms?
Most platforms rely on videos followed by simple quizzes. CodeSignal combines interactive practice with instant AI feedback, so learners build skills by doing—not just watching. This approach leads to 75% higher skill retention compared to passive learning.
What is Cosmo?
Cosmo is CodeSignal’s built-in AI tutor that provides personalized 1:1 coaching as learners work through exercises. Cosmo explains errors, suggests improvements, and helps learners apply concepts correctly—like having a mentor available anytime.
What technical skills can I learn?
Courses cover a wide range of skills from programming fundamentals to advanced topics like system design, machine learning, cloud infrastructure, and DevOps. Learning paths are aligned to roles including back-end engineer, data scientist, full-stack developer, and many more.
How long do courses take to complete?
Course length varies by topic and depth. Some beginner paths can be completed in a few hours, while comprehensive learning journeys may take several weeks. Short, focused lessons make it easy to learn in small increments that fit into busy schedules.
Can I learn on mobile?
Yes. CodeSignal’s Cosmo mobile app lets you complete lessons and practice sessions on the go, so you can make progress whenever time allows.
How do I know if I've actually learned the skills?
Assessments are embedded directly into courses to validate proficiency as you go. These aren’t simple quizzes—they’re job-relevant evaluations that confirm you can apply what you’ve learned in realistic scenarios.
Are Technical Courses available for teams?
Yes. Organizations use Technical Courses to upskill teams, close skill gaps, and keep employees proficient in emerging technologies. Individuals can also access courses directly to build skills on their own.