One-to-One Mentorship
₹699/hr · Career, Excel, AI, Freelancing
Practical tools and one-to-one guidance built from real plant leadership. After 9 years at UFlex, JPFL & GLS — including leading 60-member teams — Vivek Kumar (M.Tech, NIT Uttarakhand) now freelances, builds apps, and mentors professionals via 
Mentor App by VKS.
UFlex LimitedNoida · Shift In-charge
GLS PolyfilmsGurawara · Manager (HOD)
Currently FreelancingApps + One-to-One Mentorship
Real numbers from leading production teams in flexible packaging — the foundation behind every tool and mentoring session.
Not theory. Practical guidance from someone who led 60-member production teams and now builds tools full-time.
Production leadership, job switch, interview prep, salary negotiation in packaging & manufacturing.
Production trackers, dashboards, reporting automation — the same skills that cut reporting time from hours to minutes.
Practical AI workflows for reports, analysis, content and daily plant / office work.
How to start, price services, find clients, and manage money (ITR, personal finance basics).
Industry, career, and personal tools — one place for real work and everyday use.
Free online calculators for flexible packaging professionals. Calculate film roll weight, length, OD, GSM, yield, Met capacity, converting capacity, min manpower and more.
W = L × W/1000 × μm/10⁶ × ρ
L = W / (W/1000 × μm/10⁶ × ρ)
OD = √((4×L×μm)/π + (Core ID + 2×Wall)²)
GSM = Micron × Density (g/cm³)
Yield = (Output ÷ Input) × 100
Running ÷ Shift × 100
₹/sqm = ₹/kg × GSM ÷ 1000
3-Step: Cycle → Rolls/day → MT/day
All machines → MT/day · plant bottleneck
Shifts × Machines × Relief × Buffer → Headcount
Finance, fitness, animated stories, productivity and everyday life — every channel and playlist gathered in one place.
Insights from 9 years in flexible packaging, tech tutorials, Excel tips, and industry knowledge — shared freely for the community.
Have a problem that needs a digital solution? Vivek will build it completely free for you. If others want to use it, a fair profit-share model applies.
The person who requested the app always gets it free — no conditions.
If other users benefit commercially, a transparent revenue-share model applies.
Every app built with M.Tech-level knowledge and 9+ years of domain experience.
Packaging, farming, education, health, finance, games — no domain is too niche.
Mechanical Engineering · GATE Qualified
Materials Science & Nanotechnology
Shift In-charge · Flexible Packaging
Assistant Manager · Process & Quality
Manager – Metalliser (HOD) · 60-member team
App Builder + One-to-One Mentor
I'm a Mechanical Engineer by training, a production leader by experience, and an app builder & mentor by choice. Over 9 years at UFlex Limited, JPFL Films and GLS Polyfilms I led teams of up to 60 members, owned production planning, process control, quality and cost — delivering record output and near-zero critical defects.
I am currently freelancing full-time: building practical apps for the packaging industry and beyond, and offering one-to-one mentorship via Mentor App by VKS (AI tools, Excel, career skills, freelancing, personal finance and more).
Every calculator, every app, and every mentoring session is rooted in real plant-floor problems I solved myself. VKS Tech is the home for all of it.
DCRUST University — Materials Science & Nanotechnology
NIT Uttarakhand
Real career paths under VKS Tech mentoring — loaded live from the shared testimonials library on GitHub.