Senior Software Engineer - Industrial, GCC

Litmus; Maharashtra; On-site; INR 1,800,000 - 2,400,000; Full time

Job summary

Litmus Automation in Pune, India, is hiring an experienced Software Engineer – Golang Developer specializing in C++ to build southbound connectors for PLCs and OT systems. You will enable reliable data exchange between Litmus Edge products and a wide range of IIoT devices, industrial protocols, and OT environments.

The role offers ownership, fast impact, and collaboration with product managers and controls engineers.

Qualifications

• 5+ years of relevant software engineering experience.
• Strong proficiency in C++; Golang is a plus.
• Experience developing southbound connectors for PLCs and OT systems.

Responsibilities

• Develop C++ and Golang southbound connectors for PLCs and OT systems.
• Implement support for IIoT protocols like MQTT, CoAP, and SOAP.
• Build connectors for WebSockets and HTTP/2 for real-time data streaming.
• Collaborate with product managers, OT engineers, and other developers.
• Conduct thorough testing including unit, integration, and hardware-in-the-loop tests.
• Provide documentation and monitor performance.

Skills

C++

Golang

PLC/OT integration

Networking concepts

Problem solving

Education

Bachelors/Masters in CS/Software Eng/Electrical Eng

Tools

OPC-UA

Modbus

EtherNet/IP

PROFINET

MQTT

CoAP

SOAP

WebSockets

HTTP/2

Job description

Who is Litmus

Litmus is building the data foundation that powers industrial AI. AI doesn’t work without real-world, contextualized data - Litmus makes that data usable. As AI adoption accelerates, most industrial environments still can’t access or use their operational data. We solve that gap. We’re a growth-stage software company helping manufacturers access, structure, and use real-time data from machines, systems, and sensors at the edge. Our platform sits at the intersection of edge computing, AI, and industrial operations, enabling some of the world’s largest companies to run operations in real time, reduce downtime, and optimize production. Backed by leading investors and trusted by global manufacturers and partners like Google, Microsoft, Dell, Oracle, and Mitsubishi, Litmus is powering the shift toward software-defined manufacturing.

Why join Litmus

Build the infrastructure that makes industrial AI possible

AI is moving beyond the cloud and into the physical world. At Litmus, you’ll build the infrastructure that enables real-time data to power AI and machine learning systems in production environments.

Work on problems where software meets the real world

Most AI systems fail without access to real-world data. You’ll build the layer that makes them viable in production. We solve challenges at the intersection of distributed systems, real-time data, and industrial constraints — where reliability, scale, and performance are non-negotiable.

Have real impact, fast

You’ll work on systems used by real customers in production, with direct impact on product and company trajectory. As a scaling company, we move quickly. You’ll have ownership, visibility, and the ability to shape both product and company as we scale.

Join a high-performance team

We’re building a team that holds a high bar and pushes each other to improve. You’ll work alongside experienced operators, engineers, and leaders who have done this before and are building again at scale. We hire people who take ownership, move quickly, and care about outcomes. No passengers.

Our culture

At Litmus, the team is collaborative, curious, and low ego. People are scrappy, take ownership, and look for ways to make an impact. We value empathy just as much as execution, whether that’s in how we build, how we communicate, or how we support each other.

We’re a growing company, so things move quickly and not everything is perfectly defined. If you enjoy figuring things out, working closely with others, and making steady progress, you’ll do well here.

Description

• As a Software Engineer - Golang Developer specializing in C++ and Golang, you will play a pivotal role in developing southbound connectors for communication with PLCs and industrial control systems, enabling seamless data exchange between our Litmus Edge Products and a diverse range of IIoT devices, industrial protocols, and operational technology systems.
• Your primary responsibility will be to design, implement, and maintain robust connectors that ensure the reliability, security, and efficiency of communication between our software and the operational technology (OT) layer. Your work will be essential in enabling our products to scale and adapt to ever-evolving industrial environments.

What you will do:

• Develop C++ and Golang-based southbound connectors that communicate directly with PLCs and industrial control systems using protocols such as OPC-UA, Modbus, EtherNet/IP, PROFINET, and DNP3.
• Implement support for IIoT protocols such as MQTT, CoAP, and SOAP, enabling effective communication with industrial devices and sensors.
• Build connectors for streaming protocols such as WebSockets and HTTP/2, enabling real-time data streaming and communication with external systems.
• Implement robust error handling and fault-tolerance mechanisms to ensure connectors are resilient to failures in OT environments, delivering a seamless user experience.
• Collaborate with cross-functional teams — including product managers, OT/controls engineers, and other developers — to understand requirements and deliver high-quality integration solutions.
• Conduct thorough testing, including unit tests, integration tests, and hardware-in-the-loop tests, to validate the functionality and performance of southbound connectors.
• Optimize code and apply best practices to enhance connector performance, latency, and scalability.
• Provide clear and comprehensive technical documentation for all connectors and APIs, enabling seamless adoption by other team members and customers.
• Monitor connector performance, track metrics, and implement logging practices to troubleshoot and resolve issues efficiently.
• Stay current with advancements in the C++, Golang, and industrial automation ecosystems, continuously developing your skills and knowledge.
• Contribute to the development of our open-source projects, sharing expertise with the wider developer community.

What you will bring:

• Bachelor's or Master's degree in Computer Science, Software Engineering, Electrical Engineering, or a related field.
• Proven experience as a Software Engineer with a minimum of 5+ years of relevant work experience.
• Strong proficiency in C++ is required, and experience with Golang is a nice-to-have.
• Demonstrated experience developing southbound connectors for PLCs and industrial control systems, with hands-on knowledge of industrial protocols such as OPC-UA, Modbus, EtherNet/IP, or PROFINET.
• Deep understanding of networking concepts, real-time communication, and industrial automation environments.
• Experience implementing support for IIoT protocols is highly desirable.
• Solid working knowledge of data serialization, error handling, and security principles in integration projects — 5+ years of experience preferred.
• 5+ years of experience with version control systems (e.g., Git) and collaborative development practices.
• Excellent problem-solving skills and the ability to analyze complex integration challenges in OT environments.
• Strong communication skills and the ability to work collaboratively with cross-functional teams including engineers from both software and industrial automation backgrounds.

This is an in Office only position in Pune. Remote work is not allowed for the Pune office.

Litmus Automation is an equal opportunity employer, committed to fostering an inclusive and diverse workplace environment. We celebrate individuality and believe that diverse perspectives lead to innovation.