8+ QML Jobs in India

Senior C++/Qt Backend Engineer

(High-Performance Systems)

Location: Noida (On-site)

Introduction: Who We Are

We are a lean, product-based startup building the next generation of industrial robotics. Our products are deployed in critical, high-stakes environments, including Railways, Oil & Gas, Chemicals & Fertilizers, and Offshore operations.

We are not just writing code; we are building rugged, intelligent machines that operate in the real world.

1. The Mission (Pure Backend Focus)

You will architect the high-performance C++ Backend of our robotics software.

• No UI Work: You will NOT be designing UI pixels or writing QML front-end code.
• The Engine: Your mission is to build the “invisible engine” that processes 50 Mbps of raw scientific data and feeds it efficiently to the UI layer.
• Ownership: You own the threads, the data structures, and the logic.

2. Critical Outcomes (The First 4 Months)

• Architect the Data Ingestion Layer:
• Design a C++ backend capable of ingesting 50 Mbps of live sensor data (from embedded hardware) without dropping packets or consuming excessive CPU.
• Decouple Backend from UI:
• Implement Ring Buffers and Lock-Free Queues to separate high-speed data acquisition threads from the main Qt Event Loop, ensuring the backend never freezes the UI.
• Crash-Proof Concurrency:
• Refactor the threading model to eliminate Race Conditions and Deadlocks using proper synchronization (Mutexes/Semaphores) or lock-free designs.
• Efficient IPC Implementation:
• Establish robust Inter-Process Communication (Shared Memory / Sockets) to allow the C++ backend to exchange data with other Linux processes instantly.

3. Strategic Outcomes (Months 5 Onward)

As the product matures, your focus will shift from “Building the Engine” to “Hardening and Scaling the Ecosystem.”

• Robust OTA & Redundancy:
• Implement Linux A/B Partitioning strategies. You will design the fallback mechanism where the system uses atomic updates to revert to the last known good configuration in case of an update failure, ensuring high availability in remote offshore locations.
• Containerized Deployment:
• Move from manual builds to automated deployment. You will containerize the application (Docker / Podman) and integrate it with Jenkins / GitLab CI to enable seamless remote deployment to the robot fleet.
• Remote Diagnostics Engine:
• Build the internal logic to capture, compress, and transmit critical system logs and core dumps securely to the cloud without saturating the robot’s bandwidth.
• Fleet Monitoring Infrastructure:
• Distinct from simple logging, you will architect the heartbeat and telemetry protocols that allow our central command to monitor the health of robots deployed in railways and chemical plants in real time.

4. Competencies (Must-Haves)

• Qt Core (Backend Only):
• Expert in QObject, QThread, QEventLoop, and Signal/Slot mechanisms. You understand how to push data to QML, but you don’t style it.
• High-Performance C++:
• You handle data at the byte level, preferring Circular Buffers (Ring Buffers) over standard vectors for streams.
• Concurrency Mastery:
• You know when to use Lock-Free programming to avoid thread contention and can manage interactions between Data Acquisition and Processing threads without bottlenecks.
• Design Patterns:
• Competence in Producer-Consumer (for streams), Singleton (hardware managers), and Factory patterns.
• Linux System Programming:
• Comfortable with IPC (Shared Memory, Unix Domain Sockets) and optimizing process priorities.

5. The “Squad” (Your Team)

• Embedded Engineers:
• They push the raw 50 Mbps stream to the OS; you write the drivers to catch it.
• UI / Frontend Developers:
• They handle QML / UX; you provide the data APIs they need.
• Robotics (ROS) Engineers:
• You ensure their heavy algorithms don’t starve your data acquisition threads.
• Testers:
• You ensure your code stands up to their stress testing.

6. Why This Role Defines Your Career

• Deep Backend Engineering:
• Escape the “button styling” trap. This is 100% logic, memory management, and architecture.
• Real Engineering Problems:
• Solve race conditions, memory leaks, and high-velocity data streams.
• Architectural Autonomy:
• You decide how the data moves and choose the patterns. You own the “Engine Room.”

The One-Line Mission

You are the Chief Architect of the Robot’s Brain. You are not just writing a module; you are engineering the Complete Production Application that runs on the robot. You define how the system boots, how it manages state, and how it integrates the Robotics Team's ROS-based logic into your high-performance C++ Core without sacrificing speed or safety.

What You Will Engineer (The Complete System)

1. The "Drishti-OS" Application Framework (Core Architecture)

• The Challenge: This is a mission-critical, real-time application running in an explosive zone.
• Your Job: You design the Main Application Lifecycle.
• State Machine: You define the strict logic for the robot's states (e.g., Booting $\rightarrow$ Self-Check $\rightarrow$ Ready $\rightarrow$ Scanning $\rightarrow$ Emergency Stop).
• The ROS Bridge: The Robotics Team uses ROS Middleware for navigation. You architect the efficient Inter-Process Communication (IPC) bridge that allows their ROS nodes to talk to your Real-Time C++ Core without introducing latency into the critical data path.
• Resource Management: You ensure the CPU/RAM are allocated efficiently so the "Data Pump" never starves, even while ROS is calculating trajectory.

2. The "Data Engine" (Ingestion, Sync & Calculation)

• The Challenge: High-velocity data (730 mm/s) meets precise location tracking.
• Your Job: You build the central engine that:
• Ingests: 128 channels of Ultrasonic data via the AFM API.
• Syncs: Merges this data instantly with the ROS-published coordinates (X, Y, Theta) from the Robotics Team.
• Processes: Runs the C++ "Stitching Algorithm" to map raw signals into a coherent buffer for the UI.

3. Production-Grade Safety & Watchdogs (The "Safety Net")

• The Challenge: We operate in explosive refineries (Zone 1).
• Your Job: You implement the Software Safety Watchdogs required for ATEX certification.
• System Health: Your code monitors the heartbeat of the ROS nodes. If the Robotics logic freezes, your architecture must trigger a safe emergency stop immediately.
• Hardware Safety: You monitor internal pressure and motor temperatures, overriding control loops if physical limits are breached.

4. Data Persistence (The Digital Twin Source)

• Your Job: You own the .DRISHTI binary file format. You ensure that what we write to the disk is a corrupt-free, memory-mapped exact replica of the inspection, ready for the Full Stack Team to ingest.

5. The "Immortal" Deployment Architecture

• Your Job: You define how the code gets to the robot. You architect the OTA (Over-The-Air) System with Atomic Rollbacks. If a new update fails to boot, your architecture ensures the robot automatically reverts to the previous working version.

Who You Will Interact With

You sit at the center of the engineering circle:

1. Robotics Engineers (ROS Team):

• They do: They use ROS (Robot Operating System) middleware to build the robot's kinematics, navigation, and control logic.
• You do: You provide the architectural framework they plug into. You ensure their ROS messages (Pose/Odom) are consumed efficiently by your Core System.

1. UI/UX Developer (Qt/QML):

• They do: They build the visual dashboard.
• You do: You provide the Backend API and Signals to drive their interface.

1. Full Stack Developers (Cloud):

• They do: They build the customer-facing Reporting Platform.
• You do: You define the .DRISHTI File Contract so they can perfectly parse the data you save.

The Tech Stack You Architect

• Core: Modern C++ (17/20) (Smart Pointers, Move Semantics).
• Integration: ROS / ROS2 (Subscribers, Publishers, Custom Messages).
• Framework: Qt 6 Core (Event Loop, State Machine Framework).
• OS Level: Linux System Programming (Systemd, Kernel Tuning, Watchdogs).
• Architecture: Multi-threaded Producer-Consumer, Lock-Free Buffers, Shared Memory.

Role – Staff Engineer, Software Engineering

Experience – 7-10 Years

Location – Gurugram

Notice - Max up to 30 days

JOB DESCRIPTION:

Technical Responsibilities:

• Conduct or design prototyping and bench testing

• Conduct problem solving, identify potential solutions, and evaluate them against component and sub-system requirements

• Conduct research and studies to support product design

• Translate design inputs to engineering specifications and produce component and sub-system level designs

• Code development time/resource estimation to support projects

• Design new components applying various design concepts

• Generate and review the necessary documents with project teams (requirements, design, architecture, bugs, test)

Business Responsibilities:

• Demonstrate advanced understanding of customer needs and design inputs

• Demonstrate proficiency with product’s intended use and clinical procedures

• Learn how the financial models are constructed

Med Device Compliance:

• Follow fundamental industry standards, design requirements and test strategies which apply to regulatory requirements

• Independently create or refine engineering documentation, such as the Design History file

• Follow R&D procedure like design controls and risk management, per the Quality Management System

Minimum Qualifications (Required):

• Bachelor's degree in Software Engineering/ Computer Science or related discipline & 7+ years of work experience

Mandatory Skills:

Technical Skills:

• Highly skilled in C++, OOP, Object-Oriented Design and Analysis, Multithreading (POSIX), and TCP/IP communication.
• Knowledge of application programming with embedded systems, including communication over SPI, I2C, CAN, and FPGA (highly desirable).
• Expert-level knowledge of algorithms and data structures.
• Exposure to Qt Creator IDE is desirable.
• Proficient in programming and designing new components using various design concepts and patterns.

Design and Development Skills:

• Experience with integrated development environments (IDE) for projects

• Experience with software tools for static/dynamic analysis, memory management, code coverage and techniques for analyzing software

• Integration and deployment processes experience

Software Process Skills:

• Experience in creating estimates for code implementation time/resource for assigned tasks

• Experience in Software Development Life Cycle processes, Agile mode of implementation.

. Experience with CI/CD and DevOps systems using tools like gitla

• Experience using Application Lifecycle Management /Traceability tools

• Experience with regulatory and compliance standards applied to the SDLC (Software Development Life Cycle)

Key Technologies:

Qt/QML, C++, OOAD,Qt Creator,Qt Widgets

Responsibilities:

• Be involved in all stages of Qt/C++, , and QML development from architecture to coding to final testing
• Expertise in OOAD concepts
• Work as part of an Agile team to deliver high-quality applications
• Collaborate with the product team to plan, design, and execute new features
• Design Qt Widgets, Proficiency with tools like qt Creator, qt Design Tools

Qualifications:

• Good hands-on experience in C++ system programming and design.
• Good experience on QT and QML
• Strong understanding on object oriented techniques/methodologies.
• Good working experience on Linux platforms
• Exposure to STL, Design Patterns

1. Developing HMI application in Qt or similar UI frameworks
2. Develop C++ or Rust backends for the HMI
3. Understand and optimize potential performance bottlenecks

Build new features, enhance existing functionality and fix issues in the Windows Desktop application.

Help develop and maintain UI component library (Windows, dialogs , complex widgets)

Advise and assist the other developers in the Desktop.

Skills required

1. Very strong programming skills in UI development using Qt/C++
2. A strong ability to think about components and modules as they relate to other components as part of a larger system.
3. QML knowledge is a plus
4. Cross platform application development knowledge is a plus, not mandatory
5. A very strong attention to detail and the willingness to deliver pixel perfect UI according to the designs.
6. Must have: Very strong in ModelView architecture
7. Must have : In-depth C++, STL, and data structures knowledge

Desirable : Familiar with unit test frameworks like QtTest or Gtest

Desirable : Experienced with Agile methodology

Desirable : Knowledge in GIT or any other config management tool

Good understanding of object oriented techniques methodologies.

Good hands-on experience of C++ system programming and design.

Key Skills

C/C++, Qt, STL, Design, QML

Experience In product development is good to have

Enpass Technologies Pvt. Ltd. (Gurugram) is seeking for an experienced Windows C++ GUI software developer. We have a product for securely managing the credentials across platforms through a native productivity app, GUI of which is written in Qt toolkit and we are looking for a talented, enthusiastic developer for the same.

JOB RESPONSIBILITIES:

• Design, build, and maintain efficient, reusable, and reliable Windows Qt/QML/C++ code.

• Implement performance and quality modules.

• Identify bottlenecks and bugs, and devise solutions to these problems.

• Help maintain code quality, organization, and automatization.

• Collaborate with cross- functional teams to define, design, and ship new features.

MUST HAVE SKILLS (Please do not apply if you do not fullfill this criteria):

* Desktop Applications using QT/Qml in Windows Environment

* Minimum 1 Year experience in Windows UWP development

• 4-6 yrs experience in C++11 or C++14 standerd.

• Very good knowlege of STL.

• Experience of Multithreading in ANSI C++

• Practical experience in Win32 apis.

• Basics of socket programming and inter process communication.

• Good understanding of REST apis and internet protocols in general.

• Must be able to write unit test.

GOOD TO HAVE SKILLS

* Experience with development of Qt Quick Controls 2 based applications

* Experience in software development for mobile or tablet devices

• Familiarity with Cryptography basic concepts.

• Familiarity with agile processes and development / SW quality practices such as code reviews.

• Expertise on methods and tools for CI and test automatization.

• Build distributable packages (msi or wix).