Sathish Purushothaman
Machine Learning Researcher
Chennai
Summary
AI/ML Engineer with over a decade of experience spanning academic research, software development, and data quality assurance. Proven expertise in natural language processing, deep learning, and multi-agent communication frameworks, with a strong foundation in transformer-based neural networks and low-code/no-code platforms. Demonstrated success in teaching advanced AI concepts to legal professionals and developing scalable, user-centric solutions. Adept at bridging technical innovation with real-world applications, supported by hands-on experience in automation, data validation, and conversational AI. ISTQB-certified with a global perspective and a passion for driving intelligent, impactful solutions across domains.
Overview
18
18
years of professional experience
7
7
years of post-secondary education
1
1
Certification
Work History
Research Associate
University of Passau
Passau
06.2023 - 05.2025
- Designed and taught advanced NLP applications, including state-of-the-art Large Language Models.
- Evaluated and presented research data to inform senior researchers and contribute to project progress.
- Addressed gaps in research findings and analysed needs to inform future research strategy.
- Delivered courses on UI design, software development, database development, and Low Code/No Code Mendix applications.
- Developed multi-agent communication framework using transformer-based neural networks.
- Maintained meticulous records of all experiments conducted, ensuring transparency and reproducibility.
- Applied advanced statistical techniques to analyse complex datasets, resulting in accurate interpretations.
- Optimised neural network architectures, enhancing system performance and efficiency.
- Provided training sessions on new AI tools to technical staff members.
- Trained and fine-tuned machine learning models to increase their accuracy and reliability.
- Designed novel generative AI model—Multi-Conditional Graph Recurrent Attention Networks—to generate CNN architectures, achieving 90% test accuracy.
- Published findings in high-impact peer-reviewed journals for strengthened scientific credibility.
- Published Research Paper: Framework for Studying Communication Pathways in Machine Learning-Based Agent-to-Agent Communication.
- Published Research Paper: Multi-Conditional Graph Generation for Neural Architecture Search
Research Assistant
University of Passau
Passau
02.2023 - 06.2023
- Developed multiple transformer-based deep neural networks.
- Designed and evaluated Multi-Agent Communication Frameworks within 6 months.
- Authored scientific research papers.
Time away from work
None At This Time
Chennai
12.2017 - 09.2018
- Completed 6 month intensive German language training to support professional and academic integration.
- Prepared for higher education through focused study and skill development.
- Navigated visa delays and successfully secured entry into Germany, showcasing persistence and adaptability.
Alexa Skill Developer: Amazon Alexa Skill - Walking Dead Fakten
None At This Time
Hamburg
01.2017 - 11.2017
- Handled end-to-end implementation of Alexa Skill.
- Crafted solutions emphasizing human conversational interaction, ensuring seamless user experience.
- Localized Alexa Skill for multiple regions, delivering 3 versions in US English, UK English, and German.
- Spearheaded use of AWS cloud technologies to deliver scalable solutions.
- Utilised modern frameworks for robust application development.
Data Quality Analyst
The Nielsen Company
Hamburg
11.2015 - 12.2016
- Performed advanced statistical analysis to validate large and complex datasets.
- Automated data validation processes using Oracle PL/SQL, Excel VBA, and Python, improving efficiency and accuracy.
- Led data testing activities across multiple simultaneous projects, ensuring quality and adherence to timelines.
- Collaborated with cross-functional teams to achieve business objectives and deliver high-quality outcomes.
- Enhanced decision-making capabilities with accurate and timely reporting.
- Participated in regular team meetings, contributing valuable insights towards company-wide initiatives.
- Utilised advanced analytics tools to identify anomalies in datasets.
- Built intricate SQL queries to extract required information from databases efficiently.
- Compiled and analysed software testing results to produce actionable insights, driving process improvements.
- Boosted productivity over 50% through automation of dataset validation.
Time away from work
None At This Time
Chennai
01.2015 - 10.2015
- Completed 6-month intensive German language course at Goethe Institute in Chennai, India.
- Successfully obtained German Job Seeker Visa through German Embassy, showcasing proactive planning and dedication.
- Relocated to Germany and actively pursued career opportunities, demonstrating adaptability and resilience.
Test Lead
TCS - Tata Consultancy Services
Ithaca
01.2012 - 12.2014
- Managed testing projects in onsite/offshore model, ensuring timely delivery and quality outcomes.
- Fostered strong client relationships through consistent communication and project updates.
- Developed comprehensive test plans and estimations tailored to project requirements.
- Streamlined data testing processes through customized automation framework, enhancing efficiency and accuracy.
- Maintained core components of automation framework, including VBA scripts, ASP web pages, and Oracle procedures..
- Supervised team activities, monitored project status, and resolved obstacles effectively.
- Managed multiple concurrent testing projects and prioritized tasks to meet tight deadlines and business objectives.
- Prioritised tasks effectively under tight deadlines for timely project completion.
- Designed robust testing strategies, improved software performance.
- Collaborated with developers for seamless troubleshooting.
- Executed daily testing and verification activities, constantly achieving end-to-end testing targets.
- Accelerated delivery of datasets to under 2 weeks by automating data validation.
Test Analyst
TCS - Tata Consultancy Services
Chennai
02.2009 - 12.2011
- Contributed to estimation and test plan preparation for projects.
- Designed test scenarios and test cases aligned with project requirements.
- Configured and maintained virtual test environments using VMware Workstation and VMware Player.
- Conducted extensive functional, regression, smoke, GUI, and performance testing.
- Developed and managed automation scripts for regression test cases, streamlining testing processes.
- Logged and tracked defects effectively in JIRA, ensuring efficient resolution.
- Created weekly testing status reports and project metrics to track progress and communicate updates.
- Analysed incoming work to determine staff and test environment requirements.
- Used automation tools for efficient repeatable tests.
- Investigated identified bugs, issues and problems, managing corrections through to resolution.
- Developed integration and automation testing procedures.
- Recognized by clients for delivering software with zero severity-one production issues.
- Automated over 50% of regression test cases, significantly reducing manual effort and enhancing test coverage.
Tester
TCS - Tata Consultancy Services
Chennai
07.2007 - 01.2009
- Contributed to design of effective test cases, ensuring comprehensive coverage
- Developed comprehensive test plans to ensure software quality.
- Collaborated closely with developers to identify and resolve issues swiftly.
- Took screenshots and diligent notes, documenting issues and escalating for resolution.
- Prioritized tasks by assessing severity and overall project impact, ensuring efficient resource allocation and timely execution.
- Directed creation of automated tests, driving increased efficiency.
- Communicated test findings, reporting data to stakeholders and developers for review.
- Acknowledged as key resource within 6 months.
Education
Masters in Mobile and Embedded Systems - Computer Science
University of Passau
Passau, Bayern 10.2018 - 10.2022
Bachelor of Computer Applications - Computer Applications
University of Madras
Chennai, Tamil Nadu 07.2004 - 05.2007
Skills
Python programming
undefinedCertification
ISTQB Certified Tester Foundation Level (CTFL)
Timeline
Research Associate
University of Passau
06.2023 - 05.2025
Research Assistant
University of Passau
02.2023 - 06.2023
Masters in Mobile and Embedded Systems - Computer Science
University of Passau
10.2018 - 10.2022
Time away from work
None At This Time
12.2017 - 09.2018
Alexa Skill Developer: Amazon Alexa Skill - Walking Dead Fakten
None At This Time
01.2017 - 11.2017
Data Quality Analyst
The Nielsen Company
11.2015 - 12.2016
Time away from work
None At This Time
01.2015 - 10.2015
Test Lead
TCS - Tata Consultancy Services
01.2012 - 12.2014
Test Analyst
TCS - Tata Consultancy Services
02.2009 - 12.2011
Tester
TCS - Tata Consultancy Services
07.2007 - 01.2009
Bachelor of Computer Applications - Computer Applications
University of Madras
07.2004 - 05.2007
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