Senior Software Engineer- C++

Concentrix Catalyst Technologies Private Limited; Bengaluru; On-site; INR 2,500,000 - 4,000,000; Full time

Job summary

Concentrix Catalyst Technologies Private Limited in Bengaluru is seeking a Senior Software Engineer to design and build robust microservices in C++ and Go for an on-prem IoT platform. You will work on high‑volume data, MQTT messaging, and distributed systems in constrained environments.

The role emphasizes hands‑on backend development, performance optimization, containerized deployments with Docker and Kubernetes, and collaboration with architects, DevOps, and QA to ensure reliability and

Qualifications

• 5–8 years of backend development experience.
• Strong experience with microservices architecture.
• Production-grade systems experience.

Responsibilities

• Design and develop lightweight, high-performance microservices for an on‑prem IoT platform.
• Implement REST/gRPC APIs for BOS and external integrations.
• Develop services to consume MQTT messages from devices and process data.
• Handle high-volume IoT data ingestion and real-time/batch processing.
• Ensure scalability, reliability, and efficient resource usage within constrained environments.
• Write container-friendly services (Docker) and support on‑prem deployments.
• Collaborate with System Architect, DevOps, QA, and other teams for deployment and validation.
• Provide production support and troubleshoot issues in customer environments.

Skills

C++

Go

Microservices architecture

Backend development

Multithreading

IoT & Messaging

PostgreSQL

REST APIs

MQTT

Linux

Tools

Docker

Kubernetes

Kafka

RabbitMQ

Job description

Job Title: Senior Software Engineer- C++

Job Description We're Concentrix. The intelligent transformation partner. Solution-focused. Tech-powered. Intelligence-fueled. The global technology and services leader that powers the world’s best brands, today and into the future. We’re solution-focused, tech-powered, intelligence-fueled. With unique data and insights, deep industry expertise, and advanced technology solutions, we’re the intelligent transformation partner that powers a world that works, helping companies become refreshingly simple to work, interact, and transact with. We shape new game-changing careers in over 70 countries, attracting the best talent. The Concentrix Technical Products and Services team is the driving force behind Concentrix’s transformation, data, and technology services. We integrate world-class digital engineering, creativity, and a deep understanding of human behavior to find and unlock value through tech-powered and intelligence-fueled experiences. We combine human-centered design, powerful data, and strong tech to accelerate transformation at scale. You will be surrounded by the best in the world providing market leading technology and insights to modernize and simplify the customer experience. Within our professional services team, you will deliver strategic consulting, design, advisory services, market research, and contact center analytics that deliver insights to improve outcomes and value for our clients. Hence achieving our vision. Our game-changers around the world have devoted their careers to ensuring every relationship is exceptional. And we’re proud to be recognized with awards such as "World's Best Workplaces," “Best Companies for Career Growth,” and “Best Company Culture,” year after year. Join us and be part of this journey towards greater opportunities and brighter futures.

Job Description – Senior Software Engineer (Microservices & IoT Platform – On-Prem)

Location

Purpose of the Role We are looking for a Senior Software Engineer to design and develop robust microservices for an onpremise IoT platform. The role involves building services that handle device communication (MQTT), high-volume data processing, and integration with BOS systems, while ensuring reliability, performance, and deployability across customer environments with limited infrastructure. The ideal candidate should be hands‑on, strong in backend development, and comfortable working in distributed systems running outside cloud‑managed environments.

Key Responsibilities

• 1. Microservices Development
  • Design and develop lightweight, high‑performance microservices
  • Implement REST/gRPC APIs for BOS and external integrations
  • Ensure clean separation of concerns and modular design
  • Build services that are environment‑agnostic and easily deployable
• 2. IoT & MQTT Integration
  • Develop services to consume MQTT messages from devices process and validate incoming data
  • Implement: message parsing retry mechanisms fault tolerance
  • Handle: intermittent connectivity duplicate messages and out-of-order events
• 3. Data Processing & Storage
  • Handle high-volume IoT data ingestion
  • Design efficient data handling logic for: real-time processing batch processing (if required)
  • Work with PostgreSQL for: data persistence optimized queries
  • Ensure efficient disk and memory usage in constrained environments
• 4. Distributed System Implementation
  • Implement: asynchronous communication event-driven patterns
  • Handle: concurrency idempotency eventual consistency
  • Work with self-hosted messaging systems (MQTT brokers, Kafka, RabbitMQ, etc.)
• 5. Performance, Reliability & Scalability
  • Optimize services for: high throughput low latency
  • Identify and fix performance bottlenecks
  • Ensure services scale within fixed hardware limits (not infinite cloud scaling)
  • Build resilient services with: retry strategies circuit breakers (if applicable)
• 6. Deployment Awareness & Operability
  • Write services that are: container‑friendly (Docker) easy to configure via environment/config files
  • Understand: service startup dependencies configuration management
  • Support: on‑prem deployments and upgrades
  • Ensure services are: easy to debug in real environments (logs, error handling)
• 7. Code Quality & Best Practices
  • Follow coding standards defined by architects
  • Write clean, maintainable, testable code
  • Participate in: code reviews design discussions
• 8. Collaboration
  • Work closely with: System Architect (for design clarity) DevOps (for deployment & release packaging) QA team (for testing and validation)
  • Contribute to improving overall system design
• 9. Production Support
  • Troubleshoot production issues in customer/on‑prem environments
  • Perform root cause analysis
  • Fix bugs and improve system reliability
  • Handle real‑world issues like config mismatches, infra limitations

Required Skills Experience

• 5–8 years in backend development
• Strong experience in microservices architecture
• Experience working on production‑grade systems

Technical Skills

• Strong programming skills in: C++ / Go
• Experience with: REST APIs distributed systems
• Strong understanding of: multithreading concurrency IoT & Messaging
• Experience with: MQTT (preferred / important) message queues / event systems
• Understanding of real‑time data processing Database
• Strong knowledge of PostgreSQL
• Experience in: query optimization indexing handling large datasets

Infrastructure & Deployment Awareness

• Experience with: Docker (important)
• Basic understanding of: Linux systems networking basics (ports, connectivity)
• Exposure to: Kubernetes / K3s (good to have) deployment environments (non-cloud setups preferred)

Good to Have

• Experience working on on‑prem or edge‑based systems
• Exposure to self‑hosted messaging systems (Kafka, RabbitMQ, EMQX, Mosquitto)
• Knowledge of event‑driven architecture
• Exposure to hybrid systems (on‑prem + cloud sync)

Soft Skills

• Strong problem‑solving skills
• Ability to work independently with minimal supervision
• Good communication and collaboration skills
• Ownership mindset

Location: IND Bangalore - 55, Divyasree Towers, Bannerghatta Main Road

Time Type: Full time

Mission

Hi, we're Concentrix. We’re a global technology and services leader that powers the brands of the future. We help well-known brands — the ones you use every day — improve their businesses with technology and integrated solutions, in over 70 countries.

Company Overview

We power the brands of the future. Some call us a global technology and services leader. But we’re so much more. Human-centered, tech-powered, intelligence fuelled. Every day we’re busy helping over 2000 of the world's best brands solve their toughest business challenges. Whether it’s…… designing game‑changing brand experiences, building and scaling secure AI technologies, or building loyalty to drive revenue. We’ve got them covered. But how? We design, build, and run fully integrated, end-to‑end solutions across the entire enterprise, at speed and scale. We’re the strategic thinkers who designbrand‑defining experiences. The technologists & engineers who buildsmarter solutions. And the operational experts who run it all and make it work seamlessly. By integrating strategy & design with data & analytics, enterprise technology, and digital operations. You could say, at the heart of everything we do lies a commitment to transform the way companies connect, interact, and grow across the world and into the future. Experience the power of Concentrix. Concentrix CVG Corporation is an EEO/AA/M/F/Vet/Disability Employer.