About Persistent
We are an AI-led platform-driven Digital Engineering and Enterprise Modernization partner combining deep technical expertise and industry experience to help our clients anticipate whats next. Our offerings and proven solutions create a unique competitive advantage for our clients by giving them the power to see beyond and rise above. We work with many industry-leading organizations across the world including 20 Fortune 50 companies and 4 of the 5 top banks in both the US and India and numerous innovators across the healthcare ecosystem.
Our disruptors mindset commitment to client success and agility to thrive in the dynamic environment have enabled us to sustain our growth momentum. Persistent has been recognized across top industry platforms for innovation leadership and inclusion. We reported $1654.4M FY26 revenue with 17.4% Y-o-Y growth. We have delivered 24sequential quarters of growth with $436.0M in Q4 FY26 revenue up 3.2% Q-o-Q and 16.2% Y-o-Y growth. Our 27500global team members located in 18 countries have been instrumental in helping the market leaders transform their industries. We have been recognized as theFastest Growing IT Services Brand Globally in the 2026 Brand Finance IT Services 25 Report. We named a Leader in theEverest Group Private Equity (PE) Services PEAK Matrix Assessment 2026andSoftware Product Engineering PEAK Matrix Assessment 2026.
About Position:
We are looking for an experienced C Developer to join our platform engineering team and own the shared distributed messaging and networking library that serves as the communication backbone of our analytics platform. This highly scalable library enables seamless communication between packet capture protocol analysis decryption and downstream processing systems with a strong focus on reliability performance and maintainability.
- Role: Software Developer - C Developer
- Location: Pune
- Experience: 8 to 12 Years
- Job Type: Full Time Employment
What Youll Do:
- Design develop and maintain a unified Pub/Sub abstraction layer supporting multiple backends including ZeroMQ Apache Kafka Apache Pulsar and Redis.
- Build and enhance high-performance distributed messaging components used across the analytics platform.
- Maintain and evolve Java and Python bindings for the core C library while ensuring API consistency across languages.
- Design and implement scalable service discovery mechanisms using DNS-based endpoint resolution and REST APIs.
- Develop partition assignment and message routing strategies for Kubernetes-based deployments.
- Optimize performance-critical components including lock-free data structures ring buffers time-reorder queues and thread affinity management.
- Implement and maintain compression capabilities using ZSTD and related technologies.
- Manage Redis and Redis Cluster integrations including connection management protocol handling and operational monitoring.
- Develop and support REST server and client components along with OpenAPI-based code generation frameworks.
- Define maintain and evolve Protocol Buffer schemas while ensuring backward and forward compatibility.
- Develop and maintain traffic filtering and event processing frameworks for efficient data delivery.
- Write comprehensive unit integration and performance tests across C Java and Python ecosystems.
- Troubleshoot complex distributed system issues involving networking messaging performance scalability and reliability.
- Collaborate closely with platform consumers architects and engineering teams to evolve APIs and platform capabilities.
- Participate in architecture reviews design discussions code reviews and technical documentation activities.
- Contribute to CI/CD pipelines automated testing practices and release management processes.
Expertise Youll Bring:
- 8-12 years of software development experience with strong expertise in modern C (C17 or later).
- Extensive experience designing and maintaining reusable libraries SDKs or platform components.
- Strong understanding of memory management smart pointers RAII ABI stability and performance optimization.
- Experience with multithreading concurrency atomic operations and lock-free programming techniques.
- Strong knowledge of STL containers algorithms and modern C design principles.
- Hands-on experience with distributed messaging technologies such as Apache Kafka Apache Pulsar ZeroMQ or similar platforms.
- Strong understanding of Pub/Sub architectures consumer groups partitioning message ordering and fault tolerance.
- Experience with high-throughput and low-latency messaging systems.
- Strong networking fundamentals including TCP/IP DNS routing load balancing and distributed communication protocols.
- Experience with Redis and Redis Cluster architectures and messaging patterns.
- Experience building and maintaining Java integrations using JNA or JNI.
- Experience working with Python bindings through pybind11 ctypes cffi SWIG or related frameworks.
- Strong understanding of cross-language interoperability and memory lifecycle management.
- Hands-on experience with Google Protocol Buffers including schema design and version management.
- Experience implementing serialization strategies for distributed systems.
- Knowledge of compression technologies such as ZSTD and dictionary-based compression techniques.
- Experience working with Docker-based deployments and containerized applications.
- Strong knowledge of Git CI/CD pipelines and automated build and release processes.
- Understanding of Kubernetes deployment models and distributed application architecture.
- Familiarity with Helm charts and infrastructure automation practices.
- Experience with build tools such as Make Conan Maven and Python package management.
- Strong understanding of scalable distributed system architecture.
- Experience designing highly available and fault-tolerant platform services.
- Ability to balance performance reliability maintainability and scalability considerations.
- Strong analytical debugging and troubleshooting skills.
- Excellent communication and collaboration skills for working with cross-functional engineering teams.
Benefits:
- Competitive salary and benefits package
- Culture focused on talent development with quarterly growth opportunities and company-sponsored higher education and certifications
- Opportunity to work with cutting-edge technologies
- Employee engagement initiatives such as project parties flexible work hours and Long Service awards
- Annual health check-ups
- Insurance coverage: group term life personal accident and Mediclaim hospitalization for self spouse two children and parents
Values-Driven People-Centric & Inclusive Work Environment:
Persistent is dedicated to fostering diversity and inclusion in the workplace. We invite applications from all qualified individuals including those with disabilities and regardless of gender or gender preference. We welcome diverse candidates from all backgrounds.
- We support hybrid work and flexible hours to fit diverse lifestyles.
- Our office is accessibility-friendly with ergonomic setups and assistive technologies to support employees with physical disabilities.
- If you are a person with disabilities and have specific requirements please inform us during the application process or at any time during your employment
Lets unleash your full potential at Persistent- is an Equal Opportunity Employer and prohibits discrimination and harassment of any kind.
Required Experience:
IC