Ritesh Kansara

Transforming Complex Chemistry into Scalable, Compliant & Cost-Efficient API Solutions — Bridging R&D Innovation with Commercial Manufacturing Excellence for 28+ Years. Pharmaceutical R&D leader with 28+ years of experience in chemical process development, manufacturing science, and lifecycle management of Active Pharmaceutical Ingredients (APIs) within cGMP-compliant environments. Previously led as Tech Lead – Chemical R&D at Dr.

Reddy's Laboratories, spearheaded lifecycle management initiatives that have delivered significant improvements in process efficiency and cost optimization across API manufacturing programs. Expert in synthetic route design, process optimization, and scale-up engineering, successfully transferring multiple API processes from laboratory to commercial-scale production while ensuring product robustness and regulatory compliance. Delivered measurable operational impact by reducing manufacturing costs by up to 40% and improving process efficiency by >50%, strengthening overall production economics and product competitiveness.

Extensive experience supporting global regulatory filings, contributing to DMF, NDA, and ANDA documentation and ensuring consistent adherence to international regulatory and quality standards. Champions green chemistry and sustainable manufacturing practices, integrating environmentally responsible process improvements that enhance yield, safety, and waste reduction. Specialist in advanced organic synthesis methodologies, including Grignard reactions, catalytic hydrogenation, and complex multi-step synthesis, enabling development of efficient and scalable chemical processes.

Recognized for strong cross-functional leadership, collaborating with R&D, manufacturing, and regulatory teams to accelerate project timelines, resolve complex technical challenges, and enhance product quality outcomes.

Tech Lead – Chemical R&D (Lifecycle Management Projects) - Dr. Reddy's Laboratories Ltd. - Hyderabad

(2024-02 - 2026-03)

• Orchestrated end-to-end lifecycle rejuvenation of legacy molecules by engineering cost-lean, quality-superior processes through strategic route architecture and impurity elimination frameworks.
• Translated CAPA audit intelligence into systemic corrective blueprints, proactively closing compliance gaps and elevating organizational audit readiness to inspection-ready standards.
• Architected freedom-to-operate synthetic pathways grounded in green chemistry principles and rigorous literature intelligence, accelerating non-infringing route commercialization.
• Diagnosed and dismantled plant-level process bottlenecks through precision analytical troubleshooting, delivering measurable yield gains and rework elimination at commercial scale.
• Engineered seamless lab-to-plant transitions by strategically aligning development parameters with site-specific manufacturing capabilities during technology transfer and migration.
• Functioned as R&D-to-site integration catalyst, compressing decision cycles and driving execution velocity across cross-functional lifecycle project teams.
• Partnered with Regulatory Affairs & Quality Assurance to construct airtight documentation frameworks, data justification narratives, and audit-facing technical dossiers.
• Institutionalized process reproducibility standards through structured continuous improvement programs, enhancing development efficiency across chemical R&D operations.
• Architected talent capability elevation programs by coaching cross-functional scientists on scale-up strategy, pilot operations, and commercial batch execution excellence.
• Designed and deployed comprehensive process risk assessment models with robust API control strategies, ensuring quality-by-design compliance across critical manufacturing parameters.
• Championed sustainable chemistry transformation by systematically identifying and embedding green chemistry opportunities across the process development pipeline.

General Manager – Process R&D - Sun Pharmaceutical Industries Ltd. - Vadodara

(1997-08 - 2022-06)

• Commanded full-spectrum process research strategy across regulated and non-regulated global markets, leading synthetic route identification, competitive benchmarking, and impurity landscape mapping for 60+ molecules.
• Engineered lab-to-commercial manufacturing pipelines delivering cost-lean, deviation-minimal, regulatory-compliant scalable processes — consistently meeting stringent global market entry standards.
• Architected DMF & regulatory data intelligence packages in strategic partnership with Regulatory Affairs, ensuring submission-ready technical documentation aligned with global filing requirements.
• Executed high-complexity chemical transformations at commercial scale — including Grignard reactions, catalytic hydrogenation, Suzuki coupling, and chiral separations — translating laboratory precision into plant-level reproducibility.
• Established reference standard ecosystems for intermediates, APIs, and impurities while institutionalizing process safety validation through rigorous HAZOP methodology across development stages.
• Defined and locked quality-by-design control strategies and product specification frameworks, ensuring robust regulatory alignment and consistent commercial batch performance.
• Generated defensible intellectual property portfolios by conceptualizing, authoring, and filing multiple international patents on novel synthetic methodologies and crystalline forms.
• Deployed global multi-site troubleshooting interventions, resolving critical synthesis, stability, and yield challenges across international manufacturing locations with speed and precision.
• Elevated organizational technical capability by designing structured mentorship programs for cross-functional scientists across scale-up, piloting, commercial batch execution, and analytical development domains.
• Architected and sustained a high-performance scientific culture anchored in rigor, accountability, and continuous improvement — driving consistent on-time delivery of complex R&D projects across a 24-year tenure.
• Pioneered green chemistry adoption across process development & global regulatory filings.
• Led multiple cross-site technology transfers, accelerating lab-to-plant scale-up with minimal deviation.
• Built & mentored high-performing R&D teams over 24-year tenure, driving consistent on-time project delivery.

M.Sc. - Organic Chemistry - Maharaja Sayajirao University of Baroda (1997)

B.Sc. - Chemistry - Maharaja Sayajirao University of Baroda (1995)