Signal Processing Jobs

Please Note: total amount is $80. Please do not bid if this is not acceptable. I’m putting together a single-rail power supply for sensitive audio gear and need a clean, hum-free output. The brief is straightforward: • Topology: prefer an LDO-based regulator front-ended by a capacitance-multiplier stage (or an equally quiet alternative you can justify). • Input: board-mounted, fully encapsulated transformer—no off-board or open-frame types. • Output: 9 V to 24 V DC, up to 1.5 A continuous. Low ripple and broadband noise filtering are far more important than absolute efficiency. Include transformer snubbers. • Target use: high-end audio equipment, so 50/60 Hz mains-borne noise, switch-spikes and thermal drift must all be kept to a minimum. Deliverable...

I am looking for an experienced Embedded Hardware Design Engineer to develop a custom production-ready WIFI Board for a proprietary embedded electronic product. The selected engineer will be responsible for reviewing the project requirements, designing the complete schematic, selecting suitable components, creating the WIFI Board layout, and preparing the design for manufacturing. Required Expertise - Embedded hardware design - Mixed-signal WIFI Board design - RF WIFI Board layout - Power supply design - Battery-powered embedded systems - Design for Manufacturing (DFM) - Design for Assembly (DFA) - Schematic capture and WIFI Board layout (KiCad or Altium preferred) Deliverables - Complete schematic - WIFI Board layout - Bill of Materials (BOM) - Gerber files - Manufacturing files - A...

I need a working human-computer interface that can both pick up and broadcast data over Bluetooth at the highest speed the protocol allows. The data flowing through it will be full-rate cellular communications data rather than simple audio or text, so throughput and low latency are critical. On the input side the unit will read Qi energy and Acu-meridian energy via harness-style skin contacts. Those raw sensor signals have to be conditioned, digitised and pushed straight to a tablet over Bluetooth without noticeable lag. In the opposite direction the tablet will be able to transmit control or stimulation patterns back to the interface just as quickly. The job covers hardware design, embedded firmware and a basic demo app for a tablet or computer: • Hardware: schematic, PCB layout an...

Hello. I am looking for an experienced Python developer to implement a complete automated trading system for US equities through Interactive Brokers. The system trades a custom trend-following indicator I built and have been using on TradingView. The core work is to connect this indicator to live IBKR trading so it executes automatically. The system is a flip-flop trend trader. It is always in one of two states - LONG or SHORT on any active position. When the indicator detects a confirmed uptrend it goes LONG and rides it. When it detects a confirmed downtrend it flips directly to SHORT - closing the long and opening the short simultaneously on the same bar close. There is no neutral or waiting state between positions. When the market is ranging the system holds its existing position and...

Wireless Load Cell Monitoring Systems About the Role We're building out a wireless weighing and monitoring solution from the ground up, and we need a seasoned embedded engineer who can own the technical journey — from early prototype to a validated, field-ready product. This role sits at the intersection of hardware and software. You won't just be writing firmware in isolation; you'll be shaping system architecture, wiring up hardware, writing and debugging embedded code, and pushing performance across the board. At a high level, the system pulls weight data from a network of load-cell-equipped sensor nodes spread across multiple locations, processes that data on-device, pushes it over a wireless link, and surfaces it through a cloud-connected platform for remote acce...

I'm seeking an expert in firmware and hardware integration, specifically for radio communication. This project involves developing both firmware and the necessary hardware components. Key Requirement: - Custom Protocol: The firmware must support a custom communication protocol tailored to our specific needs. Ideal Skills and Experience: - Proficiency in radio communication systems - Experience with custom protocol development - Strong background in microcontrollers and circuit design - Knowledge of data acquisition and control systems is a plus Please share your relevant experience and approach to this project.

I need an engineer who can take me from concept to working prototype on a precision electromagnetic sensing instrument aimed squarely at industrial non-destructive testing and material verification. The core job is to design a sensor that reads electrical conductivity with high accuracy on metallic parts, while also giving me phase-shift and signal-amplitude data that I can use for deeper analysis. My ideal workflow looks like this: we agree on the excitation frequency range, coil geometry, and signal-conditioning chain; you model and build the probe; you develop the embedded firmware and a simple desktop interface so I can visualise raw and processed readings in real time. Throughout, please keep calibration and repeatability in mind—stable baselines and traceable test procedures a...

Our ESP32-based prototype uses the MSME INNP441 digital mic, and during live audio streaming it introduces jitter and a screeching interference noise—even though the board sits in a quiet lab. I have already updated the firmware, swapped in fresh hardware, and tweaked every software register I could reach, yet the distortion persists. I’m looking for someone who can dive into the existing C/C++ (Arduino-style) code, analyse the I²S configuration and clocking, and track down whatever is corrupting the audio path. If a schematic or logic-analyser trace is helpful, I can supply both. Any fix should leave us with clean, stable voice capture that we can push straight to our streaming stack. Because this is part of our in-house tech, I will provide the full repository only a...

Project Title : Custom 4G/5G & Ethernet WAN Router with Physical Internet Pause Switch Project Overview I am looking for an experienced embedded hardware engineer (or team) to design and build a custom networking device. The device should be capable of receiving internet from either a physical 4G/5G SIM card or an Ethernet WAN input and provide internet through a dedicated Ethernet LAN output. The primary feature is a physical hardware switch that instantly pauses and resumes internet connectivity to the connected LAN device while keeping the Ethernet link active. Functional Requirements 1. Internet Sources The device must support two independent internet sources: A. Cellular Physical Nano SIM card slot. Support 4G LTE and 5G NR. Compatible with as many global 4G and 5G frequency ba...

#Note:OHLC </>/crossed_below/crossed_above should be agnostic for all combos Long Combo 1 #Note:Stock universe can be detected before opening in this combo 1 C1: Accept ONLY if Daily Open = Daily Low (Bullish opening pattern) C2: Daily {LTP} crossed_above Daily Ema ( Daily Close , 5 ) C3: RSI_CONFIRMATION_INTERVAL EMA(RSI(16),23) > WMA(RSI(16),35) C4: Only 1 trade per stock (dedup) Long Combo 2 #Note:Stock universe can be detected before opening in this combo 2 C1: Accept ONLY if Daily Open = Daily Low (Bullish opening pattern) C2: 1 day ago Close > 1 day ago Low C3: 2 days ago Close > 2 days ago Low C4: 1 day ago Close > 1 day ago Sma ( Daily Close , 20 ) C5: 2 days ago Close > 2 days ago Sma ( Daily Close , 20 ) C6: Which...

I run an analog broadcasting facility and need an experienced radio engineer to work directly on our transmitter and tower-mounted antenna system. Your focus will be the RF chain—from the exciter right through to the radiating elements—making sure we’re operating at peak efficiency and fully within our licensed technical limits. You’ll have access to current schematics, field strength and SWR readings, plus any service manuals we hold. Using your own measurement gear (spectrum analyser, dummy load, vector VSWR meter, etc.) or equivalent tools on-site, I’d like you to: • Diagnose and resolve any signal quality or coverage issues linked to the transmitter or antenna • Retune, align and verify power output and reflected power figures • Docu...

I have a compact 433 MHz transmitter built around a CMT2219B RF module driven by a GD32E230G8 MCU. Before we invest in the formal lab work, I want an experienced RF-compliance engineer to look over the current schematic and two-layer PCB layout to maximise our chances of passing both FCC Part 15 and the equivalent ISED requirements. The focus is squarely on RF performance. I have no existing test data, so I’m relying on your insight to flag anything that might push us over the limits once we reach conducted or radiated emissions testing. Key areas include the matching network around the module, antenna feed, ground strategy, return-loss considerations, filtering, and any layout tweaks that could shave a few dB off leakage. You’ll receive the design files (Gerber, pick-and-pla...