Udemy Instructor
75,000+ students, 1,100+ reviews across 5 courses. Flagship: Automation Testing Masterclass, covering Java, Selenium, Cucumber, JUnit, Docker and GitLab CI.
View courses ↗Software Engineer · Founder of Bitheap · AI Builder
Hi, I'm Laurentiu Raducu
I'm a full-stack developer with 12+ years across software development, security and QA automation. I am shipping awesome products from Zürich, Switzerland.
- 12+years
- 100k+students
- 4books
- 15+articles
- ∞projects shipped
Scroll to explore · or jump into the world
About
I'm a software engineer and the founder of Bitheap, based in Zürich, Switzerland. I grew up in Romania, studied at SNSPA in Bucharest, and started out as a technical writer at a company building software for financial institutions. Since then I've worked across software development, security and QA automation for some of the world's largest financial institutions, and today I spend most of my energy building and shipping AI products.
I describe myself as a tech polymath: I move fluidly between languages, frameworks and disciplines, with a genuine appetite for learning whatever a problem needs. Lately that has meant systematic trading research, options analytics and LLM-assisted workflows, which is what my open-source GPT Trading Agent and GreekFlow projects are about.
Alongside building, I teach and write. My courses have helped over 100k students on Udemy and Pluralsight, I publish on Medium and YouTube, and I've written four books. Away from the keyboard: running, chess and the outdoors.
- 📍 Zürich, Switzerland
- 🚀 Founder of Bitheap since 2022
- 🤖 AI builder & product engineer
- 📈 Systematic trading & options analytics
- 🎓 100k+ students taught
- ♟️ Running, chess & the outdoors
Experience
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2022 - Present
Founder
Bitheap · Zürich
Tech consulting, AI products and developer education. Home of HeadSnap, AIvestor, QuantiQ, Dave and Select.Supply.
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Oct 2021 - Present
Software Developer Engineer in Test
iptiQ (Swiss Re) · Zürich
Swiss Re's insurtech arm. Engineering and test automation for digital insurance platforms.
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Feb 2020 - Oct 2021
Automation QA Engineer
UBS AG · Zürich
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Nov 2018 - Feb 2020
Automation QA Engineer
London Stock Exchange Group · Bucharest
UnaVista; MiFIR / EMIR / G20 reporting. Java, Selenium, Jenkins.
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Jun 2017 - Nov 2018
Automation QA Engineer
Luxoft · Bucharest
UBS IB; Fenergo ALM / KYC.
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Mar 2014 - Jun 2017
QA Engineer & Technical Writer
Misys (now Finastra) · Bucharest
Where it started. Joined as a technical writer, moved into QA, promoted and awarded across several roles.
Projects
A selection of products and open-source work. The same projects appear as monuments inside the 3D world, so explore to find them.
Writing
I write about AI, systematic trading, security and the reality of shipping small products. Some of it lands on other people's platforms, most of it on Medium.
Featured · alpaca.markets · Jul 2026From Quant Workflows to LLM-Assisted Trading with Alpaca
A guest piece for Alpaca on moving from rule-based strategies to LLM-assisted trading: using models for hypothesis generation while keeping deterministic risk controls and execution guardrails. Walks through two open-source projects, GPT Trading Agent and GreekFlow.
Read on Alpaca ↗On Medium
- Jul 2026 The Top AI Bottlenecks Explained: An Investor's Guide ↗
- Jul 2026 How I built a portfolio risk dashboard for my Alpaca account ↗
- Jan 2026 I tried 5 different styles for my SaaS's landing page, here's what worked best ↗
- Aug 2025 I created an AI trading agent and monitored performance for 3 months ↗
- Jun 2025 The best AI headshot generator, an honest review ↗
On the Pluralsight blog
- Dec 2025How to build a strong security culture in the workplace
- Nov 2025Top open-source cybersecurity tools for your business
- Oct 202512 top cybersecurity challenges for organizations
- Sep 2025Maximizing your cybersecurity budget: A practical guide
- May 2024How to automate your cybersecurity defenses with generative AI
- Apr 2024API security best practice for devs: How to secure your APIs
- Apr 2024Top 3 tools to safeguard app dependencies against vulnerabilities
Skills
Languages
PythonJavaScriptTypeScriptJavaKotlinC++C#RustGoSQLVB.NET
Frameworks & ML
ReactVueSvelteAngularSpringDjangoTensorFlowKerasNodeReact NativeViteTailwindThree.js
AI & Quant
LLM agentsOpenAI APIPerplexity APIRAGAlpaca APIBlack-ScholesOption GreeksBacktesting
DevOps & Cloud
DockerKubernetesTerraformAnsibleVaultAzureJenkinsGitLab CILinux
QA & Testing
SeleniumCucumberJUnitTestNGRestAssuredApache POITricentis ToscaISTQB
Teaching & Content
Pluralsight Author
Course author and blog contributor. Seven published pieces on cybersecurity strategy, API security and generative-AI defence.
Author page ↗Guest Author at Alpaca
Invited to write for Alpaca's Learn hub on quant workflows and LLM-assisted trading systems.
Read the article ↗Medium Writer
260+ followers. Essays on software engineering, AI agents, trading systems, SaaS and indie building.
Read on Medium ↗YouTube · @bitheap-tech
Videos on building software and AI products, plus walkthroughs of the tools I ship.
Watch ↗4 Books on Amazon
Published author across software and testing topics, including Introduction to Python Programming (2023).
Author page ↗Certifications
ISTQB Foundation · Tricentis Tosca L1 · Azure AZ-900 · MiFIR & EMIR Reporting.
Education
MSc, Project Management
SNSPA Bucharest
BSc, European Administration
SNSPA Bucharest
Contact
Let's build something. Reach out or follow along.