Software Integration Engineer

About the role

Merlin (NASDAQ: MRLN) is a publicly traded aerospace and defense company building a non-human pilot to deliver full-stack autonomy for any aircraft from takeoff to touchdown. The Merlin Pilot autonomy system powers a growing range of aircraft and mission profiles and has been proven through hundreds of autonomous flights from Merlin's global flight test facilities, including Kerikeri, New Zealand; Smithfield, Rhode Island; and soon, Bedford, Massachusetts. Headquartered in Boston, Merlin is expanding its organization to accelerate the development and deployment of its autonomy platform, helping customers solve some of aviation's most pressing challenges, from pilot shortages to improving flight safety. Backed by some of the world's leading investors prior to its public listing, Merlin continues to advance the certification and commercialization of autonomous flight across commercial and defense aviation.

About You: You are a hands-on software engineer who enjoys connecting software, simulation models, and physical hardware. You take ownership of well-defined engineering efforts, troubleshoot methodically, and collaborate with teammates to deliver reliable solutions. You are comfortable writing code, working in Linux, and testing directly with laboratory equipment.

As part of Merlin’s Virtual Test Environments (VTE) team, you will help develop and maintain hardware-in-the-loop test environments and the software that captures, displays, and replays engineering data. Working alongside our Staff Software Integration Engineer, you will help engineers exercise aircraft systems and resolve integration issues before flight.

Responsibilities: -

Develop and maintain C++ and Python software connecting aircraft avionics, simulation models, test hardware, and engineering tools.

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Implement software components and hardware interfaces within the architecture established by the Staff Software Integration Engineer, contributing to design decisions and code reviews.

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Integrate UEI PowerDNA equipment through vendor SDKs, low-level I/O APIs, and hardware abstraction layers.

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Configure and validate ARINC 429, CAN, serial, analog, and discrete interfaces using aircraft interface control documents, including signal mapping, message encoding, update rates, and error handling.

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Support real-time execution of aircraft simulation models, including periodic processing, I/O exchange, watchdogs, and performance diagnostics.

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Develop and maintain telemetry interfaces and data-processing components that collect, validate, record, and distribute data over UDP, TCP, and messaging systems.

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Contribute to asynchronous Rust services for telemetry ingestion, timestamp alignment, flight-test displays, and session recording, with technical guidance from senior engineers.

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Build operator displays and diagnostic tools using technologies such as GL Studio, React, HTML5, SQL, and web APIs.