Your Bridge To Trusted Manufacturing Partners.

  • Mechanical/Electronics Manufacturing & Electromechanical Assembly

    We support clients across plastics, metal fabrication, electronics (PCB, PCBA), micro-fabrication (MEMS, micron level fab) and electromechanical assembly with expert guidance from prototyping to full-scale production.

    Leveraging our deep industry experience and supplier network, we help optimize design for manufacturability, connect with trusted partners, and ensure quality, cost, and delivery targets are met.

    We have partners that can do both high-volume/low-mix, and low-volume/high-mix.

    Don’t see a manufacturing process you need? Contact us and just ask. The list below is not exhaustive.

  • Direct Founder Involvement in All Projects

    While these services are delivered through our trusted network of engineering and manufacturing partners, Shrenik is personally involved in all customer projects, technical discussions, design reviews, and key decisions. You can count on Shrenik’s direct oversight to ensure quality, alignment with your goals, and accountability at every stage of the project.

JUMP TO MANUFACTURING FAQs
  • Close-up of a green printed circuit board (PCB) with various electronic components and soldered connections.

    PCB & PCB Assembly

    We offer turnkey PCB and PCBA manufacturing services, from quick-turn prototypes to production-scale assemblies. Our trusted partners ensure high-quality fabrication, component sourcing, and assembly for reliable, production-ready electronic systems.

  • A large pile of white plastic screw caps.

    Plastic Injection

    We provide end-to-end plastic injection molding services—from DFM and mold design to high-quality prototyping and production. Our partners deliver precision-molded components that meet tight tolerances, aesthetic requirements, and volume demands.

  • A worker in a cleanroom wearing a protective suit, mask, gloves, and glasses, standing next to equipment in a manufacturing or research facility.

    MEMS Fabrication (MicroFab)

    Companies we represent offer comprehensive MEMS and microfabrication solutions, including photolithography, thin-film deposition, electroplating, annealing, dry and wet etching, wafer bonding, backend processing, and wafer-level testing and metrology. Our expertise ensures precision at the microscale, delivering high-performance devices for applications in aerospace, medical, industrial sensors, and more.

  • Close-up of a metal drill bit drilling into a metal surface with metal shavings and coolant splashing around.

    Machining

    We offer precision CNC machining and metal fabrication services for prototyping and production, using aluminum, steel, and specialty alloys. Our network ensures high-accuracy parts with fast turnaround, tight tolerances, and consistent quality.

  • Molten metal being poured in a foundry or metalworking facility with visible industrial equipment and smoke.

    Casting

    We offer a full range of metal casting solutions - including High Pressure Die Casting, Sand Casting, Investment Casting, and Gravity Casting - to meet diverse performance, cost, and volume needs. From prototype to production, we deliver precision-cast components with reliable quality and tailored material selection.

  • A person welding metal with a bright arc, sparks flying, wearing safety gloves and a welding helmet.

    Welding

    We provide high-quality welding solutions for metal assemblies, including MIG, TIG, and spot welding for structural, precision, and electromechanical applications. Our partners deliver strong, consistent welds that meet industry standards for strength, safety, and durability.

  • Blacksmith forging a piece of glowing hot metal using a hammer and anvil, sparks flying.

    Forging

    We offer precision forging solutions that enhance the strength and durability of metal components for demanding applications. Our capabilities include open-die, closed-die, and impression forging to produce parts with superior mechanical properties and consistent quality.

  • Close-up of a metal pipe clamp securing a cylindrical pipe.

    Stamping

    We provide high-precision metal stamping solutions for producing complex parts with tight tolerances and consistent repeatability. Our capabilities include progressive, transfer, and deep-draw stamping to support prototype and high-volume manufacturing across multiple industries.

  • A laser cutter machine engraving on a metal sheet, showing its orange glowing laser and metal grid surface.

    Laser Cutting

    We offer precise laser cutting solutions enabling intricate designs and clean edges with minimal material waste. Ideal for prototyping and production, our laser cutting capabilities support rapid turnaround and high-quality parts across diverse industries.

  • Close-up of metal fins on a heat sink, with a blurred blue capacitor in the background.

    Metal Extrusion

    We provide custom metal extrusion solutions for creating complex profiles and shapes with high dimensional accuracy. Our expertise covers aluminum, copper, and specialty alloys - ideal for structural components, heat sinks, and lightweight designs across industries.

  • Close-up of pink rubber part intertwined on a white background.

    Rubber Parts

    We offer comprehensive rubber parts manufacturing, including custom molding and extrusion for seals, gaskets, and vibration dampening components. Our solutions ensure durability, flexibility, and precise tolerances to meet demanding industrial and medical applications.

  • Close-up of metal springs and parts inside a mechanical device or machine.

    Springs

    We specialize in designing and producing high-quality springs—including compression, extension, torsion, and custom shapes - tailored for precise performance and durability. Our manufacturing capabilities support both prototyping and high-volume production across automotive, aerospace, industrial, and medical sectors.

Our Engagement Models

  • A smiling man in glasses with arms crossed, standing in a home office with a wooden desk, computer monitors, and a window in the background.

    Fractional Leadership

    Get senior-level leadership without a full-time hire. Shrenik steps in as your Fractional VP of Engineering, CTO, or Business Development Lead, offering strategic direction and execution support.

    No overcommitment - guaranteed.

    HIRE ME
  • A black and white photo of a January calendar, a pair of eyeglasses, and part of a notebook or planner.

    Retainer-Based Advisory

    Stay agile with a flexible monthly consulting arrangement. Perfect for ongoing technical guidance, BD strategy reviews, or cross-functional team support. 

    HIRE ME
  • A smartwatch on a car dashboard displaying a watch face with time and date, with a car window in the background.

    Time & Material (T & M)

    Engage us on an hourly or daily basis for dynamic needs. Ideal for fast-turn support, technical problem-solving, or early-stage R&D guidance.

    HIRE ME
  • A person wearing a suit pointing towards the camera with their index finger, in a close-up black and white photo.

    Success-Based Engagement

    We win when you win.

    Pay based on results - whether it’s qualified leads, closed deals, or milestone-driven performance in business development.

    HIRE ME
  • Hand using a computer mouse on a desk with a keyboard and monitor.

    Workshops & Training

    Upskill your teams with customized sessions on hardware systems, embedded software, or business development.

    Delivered in-person or virtually.

    CONTACT US
  • A diverse group of six young adults in a business meeting, with a woman standing and shaking hands with a man across the table, smiling and engaged. Others are seated with notebooks, laptops, and coffee cups, in a modern conference room with a bulletin board with sticky notes in the background.

    One-Stop Partner Network

    At S4 Consultancy Group, we give you access to a trusted global network of specialized partners for product design, simulation, manufacturing, and industrial automation. Whether you're launching a new product or scaling an existing solution, our partners bring deep technical expertise and proven capabilities across every phase. From concept to execution, Shrenik stays personally involved in every engagement - guiding technical reviews, ensuring strategic alignment, and maintaining accountability - so you get the benefits of an extended team with the assurance of experienced leadership.

    CONTACT US
  • A light bulb resting on a black surface with a chalk drawn thought bubble around it and smaller circles leading to the bubble, symbolizing a bright idea or creative thinking.

    Not sure? No problem

    We are flexible and can always figure out an engagement model that works for you.

    CONTACT US
LET'S DISCUSS YOUR NEEDS

Why partner with us?

  • A smiling man with glasses in a black t-shirt crossing his arms against a geometric dark background.

    Founder-Led Engagement

    When you hire S4 Consultancy, you work directly with Shrenik Shah — not a junior associate. Every project receives senior-level attention, ensuring decisions are fast, focused, and based on real-world experience in engineering leadership and business development.

  • A person in a light-colored suit is writing on a document at a desk with a pen, near a computer and a mouse.

    Access To Key Industry Decision-Makers

    We open doors. Through decades of relationship-building across North America, Europe, and Asia, we maintain trusted connections with senior decision-makers in OEMs, Tier 1s, and manufacturing partners — giving our clients a strategic advantage in business development and collaboration.

  • Nighttime cityscape with illuminated scaffolding and light beams crisscrossing above streets.

    Trusted Partner Network

    We’ve built a curated network of 5-star partners in design, simulation, plastics and metal manufacturing, embedded systems, and factory automation. This means we can rapidly assemble a high-performance team tailored to your needs — saving you time and reducing risk.

  • Black and white line drawing of a tractor, a bulldozer, a jet airplane, and a helicopter with happy faces.

    Deep, Cross-Industry Experience

    With 25+ years of leadership experience across aerospace, automotive, off-highway and manufacturing, we bring a broad yet highly technical perspective to every engagement. We understand the nuances of regulated industries, rugged environments, mission-critical systems, and scaling complex hardware solutions.

  • Black and white business strategy planning charts with stages numbered 01 to 06, focusing on ideas, feasibility, planning, formalities, launch, and support, with a pen placed on the charts.

    Execution Focused, Not Just Strategy

    We go beyond PowerPoints. Whether it’s accelerating product development, securing manufacturing partners, or building your customer pipeline, we stay involved through execution to ensure measurable impact and sustained results.

  • Group of five diverse young adults working together on laptops in a bright office space.

    Flexible, Customer-Centric Approach

    We adapt to your stage and priorities — offering fractional leadership, fixed-scope projects, or full-cycle development support. Our goal is to deliver value that scales with your growth, not overhead that slows you down.

LET'S DISCUSS YOUR NEEDS

Our Current and Past Clients

Renaissance Engineering Partners logo
Logo of AES Advanced Engineering Services with stylized text in blue and green and company name underneath.
Logo for Anthony Roth & Sons featuring stylized initials 'ARS' in blue and black

FAQs

  • We support a wide range of manufacturing needs including plastics, metal fabrication, PCB/PCBA, microfabrication (MEMS), machining, casting, forging, stamping, welding, laser cutting, extrusion, rubber parts, and spring production. Our network covers both prototyping and full-scale production.

  • All manufacturing is executed through our curated and trusted partner network. However, every project is personally overseen by Shrenik Shah to ensure quality, strategic alignment, and accountability.

  • We work across aerospace, automotive, off-highway, medical, and industrial sectors. Our deep cross-industry expertise helps us tailor solutions for regulated, rugged, and mission-critical environments.

  • Absolutely. Many of our partners specialize in low-volume, high-mix manufacturing and quick-turn prototyping, making us an ideal partner for startups and early-stage product development

  • Yes. We have partners that specialize in high-volume, low-mix manufacturing across metals, plastics, and electronics — enabling us to scale your product seamlessly.

  • Every project receives direct involvement from our founder, Shrenik Shah — bringing 25+ years of technical leadership, industry connections, and execution-focused support. We bridge the gap between your engineering goals and proven manufacturing solutions.

  • No problem. The list is not exhaustive. Contact us with your specific needs — we likely have a qualified partner or can source the right capability quickly.

  • Yes. We specialize in both mechanical and electromechanical assembly, including PCB fabrication and assembly, wiring harnesses, precision housings, and integration of electrical and mechanical subsystems.

  • Yes. We offer flexible engagement models including fractional leadership, retainer-based consulting, and workshops — even if you're not ready for manufacturing yet.

  • Our trusted partner network spans North America, Europe, and Asia — allowing us to balance cost, quality, and lead time based on your priorities.

    We also have ITAR compliant partners that manufacture purely in the US.

  • We only work with vetted, high-quality partners who meet industry standards. Shrenik stays directly involved in technical reviews, supplier vetting, and decision-making throughout the engagement.