Firewall C++ Developer

• *Job Description**

• *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 what’s 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 disruptor’s 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 $1,654\.4M FY26 revenue with 17\.4% Y\-o\-Y growth. We have delivered 24 sequential quarters of growth with $436\.0M in Q4 FY26 revenue, up 3\.2% Q\-o\-Q and 16\.2% Y\-o\-Y growth. Our 27,500\+ global team members, located in 18 countries, have been instrumental in helping the market leaders transform their industries. We have been recognized as the Fastest Growing IT Services Brand Globally in the 2026 Brand Finance IT Services 25 Report. We named a Leader in the Everest Group Private Equity (PE) Services PEAK Matrix® Assessment 2026 and Software Product Engineering PEAK Matrix® Assessment 2026\.

• *About Position:**

We are looking for a highly skilled Firewall Developer with strong expertise in C/C\+\+ programming and deep understanding of network security technologies. The ideal candidate should have hands\-on experience in firewall development, IPSec, VPN, packet processing, network protocols, and socket programming (TCP/IP). This role requires a strong troubleshooting mindset and experience in building secure, high\-performance networking solutions in the cybersecurity domain

• **Role: Firewall C\+\+ Developer**
• **Location: Pune**
• **Experience: 8\+ Years**
• **Job Type: Full Time Employment**

• *What You'll Do:**

• Design, develop, and enhance firewall/security product features using C/C\+\+
• Work on firewall development, including rule processing, packet filtering, NAT, and traffic management
• Develop and maintain features related to IPSec, VPN, and secure communication protocols
• Implement efficient packet processing and optimize network traffic handling
• Work with network protocols such as TCP/IP, UDP, ICMP, HTTP/HTTPS, etc.
• Perform socket programming and low\-level networking development
• Debug and troubleshoot complex network and security issues
• Analyze system performance and improve security, scalability, and throughput
• Collaborate with cross\-functional teams including QA, product engineering, and support
• Contribute to architecture discussions and technical design for network security products

• *Expertise You'll Bring:**

• 8\+ years of experience in network/security software development
• Strong programming skills in C or C\+\+
• Hands\-on experience in firewall development
• Solid knowledge of:
• IPSec
• VPN technologies
• Packet processing
• Network protocols
• Socket programming
• TCP/IP stack
• Strong troubleshooting and debugging skills in networking environments
• Experience in Linux/Unix\-based development
• Good understanding of network cybersecurity concepts
• Strong analytical and problem\-solving skills
• Bachelors degree in Engineering

• *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

• *Let's unleash your full potential at Persistent \-** **persistent.com/careers**

• **"Persistent is an Equal Opportunity Employer and prohibits discrimination and harassment of any kind."***

• *1**

Open Positions

• *C C\+\+,Firewall,Networking**

Skills Required

• *Pune, Maharashtra, India**

Location

• *C C\+\+,Firewall,Networking**

Desirable Skills

• *8 to 12 years**

Years Of Exp

• *174718**

Job Code