Rajan Kumar — Product Manager

Senior Engineer – Production (Solar Cell Manufacturing) at ReNew 📍 2.5 GW Cell Manufacturing Facility | Clean Tech | Operations Excellence I am a results-focused Electronics and Communication Engineer with 6+ years of experience in high-volume electronics medical device and solar manufacturing environments. Currently serving as Senior Engineer – Production at ReNew’s 2.5 GW Solar Cell Manufacturing Plant, I lead end-to-end operations across the Diffusion Cluster, including LDSE, AOI, and Annealing tools. At ReNew, I am deeply involved in driving operational excellence through structured problem-solving, automation improvement, process discipline, and manpower development. My work plays a vital role in ensuring stable throughput, yield consistency, and adherence to safety and quality standards in a fast-paced, large-scale production environment. 🔹 I thrive in cross-functional collaboration with engineering, maintenance, and quality teams to achieve production KPIs. 🔹 I actively support tool qualification, recipe control, and downtime reduction initiatives. 🔹 I take pride in mentoring shift teams and leading frontline operations with clarity and ownership. With a passion for clean energy and precision manufacturing, I aim to contribute to India’s green energy mission while continuously learning and evolving as a people-driven engineer. Core Strengths & Skills: ✔ Solar Cell Manufacturing (Diffusion, LDSE, AOI, Annealing) ✔ Production Planning & Tool Ownership ✔ Yield, PPM, and Defect Control ✔ Process Audits & RCA (Root Cause Analysis) ✔ Team Leadership & Shopfloor Training ✔ Lean Manufacturing | 5S | TPM | ISO

Stackforce AI infers this person is a Clean Tech and Electronics Manufacturing expert with a focus on operational excellence and process improvement.

Location: Ahmedabad, Gujarat, India

Experience: 7 yrs 2 mos

Skills

Solar Cell Manufacturing
Production Planning & Tool Ownership
Lean Six Sigma
Process Improvement
Lean Manufacturing
Manufacturing Engineering
Production Management
Electronics Manufacturing

Career Highlights

Led operational excellence in solar cell manufacturing.
Implemented Lean Six Sigma practices in medical device production.
Mentored teams to achieve production KPIs and quality standards.

Work Experience

ReNew

Senior Engineer -Cell Manufacturing (10 mos)

NSV, Inc

Manufacturing Engineer (2 yrs 11 mos)

ESP Safety Pvt. Ltd.

Electronic Assembly Engineer- Production (1 yr 1 mo)

UKB Electronics Pvt. Ltd.

Production Engineer (2 yrs)

CapitalVia Global Research Limited - Investment Advisor

Client Acquisition Manager-Senior Officer (5 mos)

Vigital India Pvt.Ltd

Internship Program (1 mo)

Summer Internship (1 mo)

Education

B.Tech at Dr. A.P.J. Abdul Kalam Technical University

12th at Nitishwar College, Muzaffarpur

10th at RBHS Birihima bazar Muzaffarpur

Rajan Kumar

Product Manager

Ahmedabad, Gujarat, India7 yrs 2 mos experience

Key Highlights

Led operational excellence in solar cell manufacturing.
Implemented Lean Six Sigma practices in medical device production.
Mentored teams to achieve production KPIs and quality standards.

Stackforce AI infers this person is a Clean Tech and Electronics Manufacturing expert with a focus on operational excellence and process improvement.

Contact

rajanmangalmay@gmail.com LinkedIn

Skills

Core Skills

Solar Cell ManufacturingProduction Planning & Tool OwnershipLean Six SigmaProcess ImprovementLean ManufacturingManufacturing EngineeringProduction ManagementElectronics Manufacturing

Other Skills

Process Optimization (Manufacturing)Equipment Tool & ManagementData Analysis & SPCProblem Solving & TroubleshootingCross-functional CollaborationsInventory ManagementOperations ManagementISO 13485Software InstallationNew Vendor DevelopmentManufacturing ProcessesNew Product ValidationGood Manufacturing Practice (GMP)JiraMinitab

About

Experience

7 yrs 2 mos

Total Experience

1 yr 7 mos

Average Tenure

10 mos

Current Experience

Renew

Senior Engineer -Cell Manufacturing

Jun 2025 – Present · 10 mos · Dholera, Gujarat, India · On-site

✅ Oversee day-to-day production operations of diffusion furnaces, LDSE systems, annealing tools, and related automation systems.
✅ Ensure adherence to production targets, quality standards, and safety norms.
✅ Monitor equipment performance and process parameters to achieve stable, high-yield production.
✅ Drive continuous improvement projects to optimize throughput, reduce downtime, and enhance cell performance.
✅ Collaborate with process, maintenance, and quality teams to solve production bottlenecks and root-cause chronic issues.
✅ Develop and maintain standard operating procedures (SOPs), work instructions, and training materials for operators and shift engineers.
✅ Analyze process data and equipment logs to identify trends, drive predictive maintenance, and support process capability improvements.
✅ Coordinate tool qualifications, recipe tuning, and change management activities for existing and new production lines.
✅ Ensure effective usage of automation systems for recipe loading, wafer tracking, and alarm monitoring.
✅ Actively support new technology transfers, pilot runs, and mass production ramp-ups.

Process Optimization (Manufacturing)Equipment Tool & ManagementData Analysis & SPCProblem Solving & TroubleshootingCross-functional CollaborationsSolar Cell Manufacturing+1

Nsv, inc

Manufacturing Engineer

Aug 2022 – Jul 2025 · 2 yrs 11 mos · Ahmedabad, Gujarat, India · On-site

Our company is manufacturing Electronics Medical Devices for Pre- Cervical Cancer Screening Examination, ECG Device & Pre- Oral Cancer Screening Examination Device

Lean Six SigmaProcess ImprovementInventory ManagementOperations ManagementISO 13485Software Installation+18

Esp safety pvt. ltd.

Electronic Assembly Engineer- Production

Jul 2021 – Aug 2022 · 1 yr 1 mo · Gurugram, Haryana, India

Establishing a test procedure for PCB's used by ESP.
Assembling flame and gas detectors products of ESP.
Testing flame and gas detector products manufactured by ESP.
To ensure a Quality assurance program for manufacturing of ESP devices.
To Overseeing the production process & implementation change to make it more efficient.
To check configuration of products during assembling and testing.
To performing quality checks for incoming material for PCB, Metal,Optics, and other related components.
Supplier visits for control and checking of manufacturing process.

Good Manufacturing Practice (GMP)Lean ManufacturingData AnalysisAssembly LinesManufacturing EngineeringCause & Effect Diagram+9

Ukb electronics pvt. ltd.

Production Engineer

Jun 2019 – Jun 2021 · 2 yrs · Noida sec63

To manage the production activities at shop floor to ensure the ontime delivery without zero customer complain.
To maximize the utilization of assets & improve productivity.
To avoid loss from manufacturing and implementation of fool proofing activities in process.
Devlop best practices to improve production capacity, Quality and Realibility.
Provide training and guidance to manpower to accomplish production goals.
First Two month in Wiring Harness Connector Assembly Department Then, LCD Power Cord(Assembly&Manufacturing)Department, Production Line Incharge

Electronics ManufacturingProduction ManagementISO 9001Manpower HandlingChange ManagementPDCA Cycle+1

Capitalvia global research limited - investment advisor

Client Acquisition Manager-Senior Officer

Jan 2019 – Jun 2019 · 5 mos · Indore Area, India

Contact potential and existing clients to inform them about a product or service.
Answer Questions about company and Services.
Answer telephone call for potential clients who is responding our service.
Handle Clients Questions
Complete Daily KRA(Key Results Area)
Complete Monthly Target which is given by business manager
Responsible to new sales opportunities though lead follow.
Generates revenue from old clients.
Maintain the data base prospect.

Vigital india pvt.ltd

2 roles

Internship Program

Jul 2018 – Aug 2018 · 1 mo

PLC Controller, Data Logger,Temperature Controller e.t.c

Summer Internship

Jul 2018 – Aug 2018 · 1 mo

I have done my summer internship from Electrical&Electronics Department, where I learn about PLC, Data Logger, Temperature Controller, PCB Products etc .