Sri (Chaitanya durga prasad) Mojjada

Electronics Engineer

Avatar placeholder
Stuttgart, Germany

Experience

Apr 2024 - Present
1 year 10 months
Stuttgart, Germany

Electronics Engineer

Dausinger + Giesen GmbH

  • Designs and develops new high-precision analog/digital PCBs for laser control systems using Eagle and KiCad.
  • Leads hardware testing, failure analysis, and systems integration for all PCBs within high-power laser systems.
  • Conducts component-level debugging on PCBs, tracing faults from power supply rails to communication lines (CAN, SPI) and sensor data (ADC/DAC).
  • Identifies burned/damaged components, performs SMD/THT rework and soldering to repair and validate boards.
  • Developed an advanced auto-alignment algorithm using Particle Swarm Optimization (PSO) and PID control in Embedded C. This firmware uses a 4-Quadrant-Diode (4QD) PCB’s ADC signals to control piezo mirrors, automatically maximizing the laser’s power position.
  • Developed an Autonomous Laser Alignment System using a PIC18F26K83. Implemented a Bayesian Optimization algorithm to maximize optical power by controlling a 2-axis piezo inertia mirror mount.
  • Designed a "Virtual Encoder" in software to track position for an open-loop system.
  • Configured the Internal ADCC in Burst Average Mode to filter high-impedance photodiode noise.
  • Interfaced with a PI E-870.41 driver using a custom 20kHz multiplexed pulse train.
  • Developed a robust CAN Bootloader for the dual-core dsPIC33CH, enabling remote firmware updates. Solved deep-level bugs related to hardware timer conflicts, slave core fuse-bit mismatches, and CAN state management.
  • Installs and integrates validated PCBs into the final laser systems, verifying all CAN, power, and I/O cabling and debugging any system-level hardware/software conflicts.
  • Contributes to the development of the C++/Qt-based system control software, integrating CAN protocols to control and test all PCBs from a unified application.
Sep 2023 - Mar 2024
7 months
Mulfingen, Germany

Master Thesis

Ebm-papst Germany

  • Developed DSP algorithms (beamforming, inverse methods) in MATLAB and Python for sound source localization of rotating systems.
  • Analyzed and validated methods using tailored Green’s functions to identify system performance optimizations.
Jun 2022 - Aug 2023
1 year 3 months
Frankfurt, Germany

Technology and Applications Intern

Siemens Digital Industries Software

  • Developed and optimized DSP algorithms in Python (Acoular) for aeroacoustic testing and noise localization.
  • Designed and analyzed microphone arrays for beamforming applications using Simcenter 3D.

24GHz Radar System

  • Designed and built a 24GHz radar system prototype for movement and speed detection.
  • Designed a custom PCB with a Band Pass amplifier and programmed a FreeSoc board to process signals and trigger real-time alerts.

C++ Audio Player System

  • Developed a multithreaded audio player in C++, applying object-oriented principles and design patterns.

Summary

R&D Electronics Engineer with a Master’s degree (Grade 1.9) specializing in full-cycle systems integration, testing, and firmware development for high-precision laser systems. Proven expertise in component-level failure analysis, hardware debugging (CAN, SPI, ADC/DAC), and advanced algorithm development (Bayesian Optimization, PSO, PID). A hands-on problem-solver who bridges the gap between hardware (PCB testing, rework) and software (Embedded C, C++/Qt).

Skills

  • Hardware Testing & Debugging: Component-level Failure Analysis, Root Cause Analysis (Power, Comms), Adc/dac Validation, Rework
  • Systems Integration: Full-system Installation, Cabling Verification, Hardware-software Integration, Functional Testing
  • Embedded Systems: Embedded C, C++, Dspic & Pic Microcontrollers (Pic18f, Dspic33), Mplab X Ide, Real-time Firmware
  • Algorithms & Dsp: Bayesian Optimization, Particle Swarm Optimization (Pso), Pid, Digital Signal Processing, Noise Filtering
  • Hardware & Lab Skills: Pcb Design (Eagle, Kicad, Ltspice), Smd & Tht Soldering, Test Bench Operation, Oscilloscopes, Logic Analyzers
  • Software & Protocols: C++/qt (Application Level), Can, I2c, Spi, Matlab, Python

Languages

Telugu
Native
English
Advanced
German
Intermediate

Education

Oct 2021 - Jun 2024

Darmstadt University of Applied Sciences

Master of Science, Electrical Engineering & Info. Tech. (Grade: 1.9) · Electrical Engineering & Info. Tech. · Darmstadt, Germany

Oct 2016 - Jun 2020

SREYAS Institute of Engineering & Technology

Bachelor of Technology, Electronics & Comm. Engineering (Grade: 8.01/10) · Electronics & Comm. Engineering · India

Need a freelancer? Find your match in seconds.
Try FRATCH GPT
More actions

Similar Freelancers

Discover other experts with similar qualifications and experience

Wolfgang Gärber
Wolfgang Gärber

IPS Verification

View Profile
András Bognár
András Bognár

Test Equipment Developer

View Profile
Christian Pehle
Christian Pehle

Freelance Electrical Engineer

View Profile
Ludwig Jaffé
Ludwig Jaffé

Research Associate

View Profile
Peter Kortmann
Peter Kortmann

Hardware and Software Developer / Project Manager

View Profile
Vlad Petruş
Vlad Petruş

Senior Electrical Engineer

View Profile
Muhammad Baig
Muhammad Baig

Lead Hardware Engineer; Integration and Validation Engineer/Manager; Systems Architect

View Profile
Cesar Mestre balsa
Cesar Mestre balsa

Systems Engineer Zone Controller

View Profile
Alexander Neumann
Alexander Neumann

Project management in embedded software and hardware development / Smart Home

View Profile
Matthias Spiller
Matthias Spiller

Software developer and consultant

View Profile
Muhammad Hammad
Muhammad Hammad

Working Student Electrical Engineer Automation

View Profile
Christian Eigner
Christian Eigner

Managing Director

View Profile
Peter Jens-uwe
Peter Jens-uwe

Creation of Test Sequences for Electronics Manufacturing

View Profile
Michael Kraft
Michael Kraft

Co-Founder

View Profile
Shreya Sharma
Shreya Sharma

Automation Engineer

View Profile
Steffen Kappler
Steffen Kappler

Freelancer – Software Development

View Profile
Yoav Netzer
Yoav Netzer

Freelance Software Architect

View Profile
Frank Doerries
Frank Doerries

Project management, development and system integration for the retrofit of a Uranus thermionic mass spectrometer

View Profile
Reinhard Meschenmoser
Reinhard Meschenmoser

Consultant

View Profile
Haider Ali shahid
Haider Ali shahid

MTO - Apparel Maintenance

View Profile
Mathias Kurzweg
Mathias Kurzweg

Hardware Developer, Project Manager, Programmer

View Profile
FRATCH Freelancer
FRATCH Freelancer

Software Developer - Building Automation

View Profile
Arne Hendricks
Arne Hendricks

Embedded Fullstack Developer

View Profile
Daniel Schäftner
Daniel Schäftner

Embedded Software Engineer

View Profile
Michael Schulze
Michael Schulze

Senior Hardware Development

View Profile
Sherif Omran
Sherif Omran

Developer

View Profile
Ilhan Catak
Ilhan Catak

Senior Battery Systems Expert

View Profile
Oleksii Kvasnikov
Oleksii Kvasnikov

Software developer (freelance)

View Profile
Björn Kunz
Björn Kunz

Development Engineer for Control Concepts

View Profile
Hussein Kaheel
Hussein Kaheel

QA and Test Automation Engineer

View Profile