Dan Russuleac
Lucan,Ireland
Summary
Results-driven Computer Science graduate and Microsoft-certified Azure Fundamentals (AZ-900) professional who has already sharpened enterprise database performance in a SAP, Center-of-Excellence internship. I pair deep Python knowledge - core data structures, comprehensions, generator pipelines, and rigorous pytest coverage - with advanced SQL tuning across PostgreSQL, MySQL, Azure SQL and Oracle, routinely slashing multi-terabyte query runtimes by up to 300 %. Comfortable translating CPU, memory and I/O telemetry into clear, client-ready insights, I’ve authored weekly optimisation reports, hosted client briefings and supported multiple production go-lives. I thrive at the intersection of code quality, data-driven decision-making and consultative communication - ready to convert complex performance challenges into measurable wins for your consulting or software engineering team.
Overview
2
2
years of professional experience
4
4
years of post-secondary education
Work history
Business Process Analyst Intern
SAP
Dublin, Leinster
01.2024 - 09.2025
- Analysed multi-terabyte datasets in MySQL and Azure SQL DB, profiling execution plans and system-level metrics to pinpoint performance bottlenecks.
- Boosted query speeds by 200–300 % on average by designing new indexes, re-using existing ones, and refactoring SQL—cutting hours-long runs to minutes for business-critical actions.
- Created and presented weekly Technical Performance Optimisation (TPO) reports, translating CPU load, RAM usage, processor count and I/O trends into clear, actionable recommendations for both engineers and clients.
- Honed soft skills in client communication, teamwork and agile problem-solving, while deepening technical expertise in SQL tuning, capacity planning and large-scale data analytics.
- Collaborated with cross-functional COE engineers and interns to create “SAP-Chat,” a Snapchat-style internal social app(in React and Node.js) that fostered workplace connectivity and showcased rapid prototyping skills.
Education
Bachelor of Science - Computer Science
Technological University Dublin
Dublin 09.2021 - 09.2025
Skills
- Python (proficient): mastery of core data types (lists, dicts, sets, tuples), list/dict comprehensions, generators; robust unit & integration testing with pytest, object-oriented design, algorithms
- Advanced SQL & Relational DBs: MySQL, PostgreSQL (pgAdmin), Azure SQL, Oracle; query-plan tuning, index design, ETL for multi-TB workloads
- Cloud & DevOps: Microsoft Azure (AZ-900), Git version control, CI/CD fundamentals
- Data Insights & Reporting: Excel (pivot tables, Power Query) and ad-hoc SQL analytics for client-ready findings
- Complementary Languages: Java, C, JavaScript HTML for rapid full-stack prototypes
- Systems & Design: Linux CLI & scripting, UML & ER diagramming, strong stakeholder communication
MindCare - an AI based Mental Health Application
- AI-first feature set: GPT-powered chatbot offers empathetic conversation, performs sleep-pattern analysis, and generates daily wellness tasks tailored to each user’s profil - showcasing prompt-engineering, function-calling design and multi-step reasoning.
- Modern React front-end: SPA built with React 18, hooks, dayjs for date logic and react-chartjs-2/graphjs for live mood graphs, demonstrating component architecture, state management and data-visualisation skills.
- Hardened Node/Express API: layered controller-service-DAO pattern, secure JWT sessions and password hashing with bcrypt, reflecting production-grade backend engineering practices.
- Relational data craftsmanship: PostgreSQL schema with indexed mood/sleep tables, CTE-driven analytics views and parameterised queries—evidence of advanced SQL modelling and performance tuning.
- Local-first DevOps: Docker-Compose spins up front-end, back-end, pgAdmin and test containers in one command, highlighting environment-parity thinking and container fluency.
github.com/DanRussuleac/MindCare_Test
Languages
English
Fluent
Timeline
Business Process Analyst Intern
SAP
01.2024 - 09.2025
Bachelor of Science - Computer Science
Technological University Dublin
09.2021 - 09.2025
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