c++ developer at Wissen Technology · Bengaluru (Bangalore) · 5 - 16 years · Profitable · Posted 9 Oct 2025

iNFX is a set of micro-services that (mainly) will run on our embedded Linux devices – our payment terminals and edge devices. The purpose is to provide key software building blocks for the things our customers need to do on their retail sites – like processing payments, integrating with devices on the forecourt (petrol dispensers, EV chargers, Tank gauges, price signs), running the workflow on payment terminals and providing for mobile payments & customer engagement.
The team we are looking for would be working on the C++ based microservices. Experience with payments processing would be very beneficial.
While we ideally want C++ developers, it is important to note this is Application development rather than traditional “embedded” development. We want people who understand APIs, protocols, and ideally payments. Ideally having worked with Linux, although Kernel driver development experience is not so important. Neither is bare-metal / low-level firmware experience. The software is also intended to be portable to Windows environments - so experience in cross platform development is important.
No need to target Assembler skills for the Application Engineer, good C++ & Linux Application development skillsets are important but experience in the payment domain is an truly an advantage some of payment domain experience/expertise would be - understanding of ISO8583 type messaging, payment transaction types, payment software development exposure, EMV understanding, Payments security and certification etc

About Wissen Technology
About
The Wissen Group was founded in the year 2000. Wissen Technology, a part of Wissen Group, was established in the year 2015. Wissen Technology is a specialized technology company that delivers high-end consulting for organizations in the Banking & Finance, Telecom, and Healthcare domains.
With offices in US, India, UK, Australia, Mexico, and Canada, we offer an array of services including Application Development, Artificial Intelligence & Machine Learning, Big Data & Analytics, Visualization & Business Intelligence, Robotic Process Automation, Cloud, Mobility, Agile & DevOps, Quality Assurance & Test Automation.
Leveraging our multi-site operations in the USA and India and availability of world-class infrastructure, we offer a combination of on-site, off-site and offshore service models. Our technical competencies, proactive management approach, proven methodologies, committed support and the ability to quickly react to urgent needs make us a valued partner for any kind of Digital Enablement Services, Managed Services, or Business Services.
We believe that the technology and thought leadership that we command in the industry is the direct result of the kind of people we have been able to attract, to form this organization (you are one of them!).
Our workforce consists of 1000+ highly skilled professionals, with leadership and senior management executives who have graduated from Ivy League Universities like MIT, Wharton, IITs, IIMs, and BITS and with rich work experience in some of the biggest companies in the world.
Wissen Technology has been certified as a Great Place to Work®. The technology and thought leadership that the company commands in the industry is the direct result of the kind of people Wissen has been able to attract. Wissen is committed to providing them the best possible opportunities and careers, which extends to providing the best possible experience and value to our clients.
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Location: Pune (Baner) – Work from Office (5 Days a Week)
About the Role :
We are looking for passionate Java Backend Engineers to build highly scalable, high-performance enterprise applications used by millions of users globally. The ideal candidate should have strong experience in Java, Microservices, Payment Gateway integrations, and Checkout platform development, with a product engineering mindset.
Candidates from FinTech, E-commerce, Payments, or Product-based companies will be preferred.
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Design, develop, and maintain scalable backend applications using Java and Microservices.
Build secure, high-performance REST APIs and distributed services.
Develop and enhance Checkout platforms and Payment Gateway integrations for seamless payment processing.
Collaborate with Product, Architecture, QA, and DevOps teams throughout the SDLC.
Participate in system design, architecture discussions, and technical decision-making.
Ensure high code quality through unit testing, code reviews, and engineering best practices.
Build and support CI/CD pipelines and containerized deployments.
Troubleshoot production issues, optimize performance, and improve application reliability.
Mentor junior engineers and contribute to engineering excellence.
Required Skills :
5–10 years of backend development experience.
Strong expertise in Java, Spring Boot, Spring MVC, Hibernate/JPA.
Hands-on experience with Microservices Architecture.
Experience building RESTful APIs.
Strong knowledge of SQL/NoSQL databases.
Experience with Payment Gateway Integration (Stripe, Adyen, Razorpay, Worldpay, PayU, Checkout.com, etc.).
Hands-on experience developing Checkout and Payment Processing workflows.
Understanding of Payment Lifecycle, including Authorization, Capture, Refunds, Settlement, Webhooks, and Transaction Management.
Experience with Docker, Kubernetes, and containerized applications.
Good understanding of CI/CD pipelines using Jenkins or similar tools.
Familiarity with Git, Agile methodologies, and engineering best practices.
Strong problem-solving and debugging skills.
Preferred Skills :
Experience working in FinTech, Payments, E-commerce, or Product-based organizations.
Exposure to Cloud Platforms (GCP/AWS/Azure).
Experience with Kafka or event-driven architecture.
Knowledge of OAuth2, JWT, Keycloak, or similar authentication mechanisms.
Experience with Monitoring & Observability tools (Grafana, Prometheus, ELK, Splunk).
Performance tuning and scalability optimization experience.
Preferred Background :
Candidates from FinTech, Digital Payments, Banking Products, E-commerce, or Product Engineering companies.
Experience working on high-volume transaction systems handling secure payment processing and checkout experiences.

Qualifications & Requirements:
- 4+ years of experience in C++ application development.
- Hands-on experience with C++11 or above.
- Strong knowledge of object-oriented programming and software design.
- Deep understanding of STL, multi-threading, socket programming, and data structures.
- Solid grasp of Linux development and debugging techniques.
- Proficient in using GCC, GDB, and Makefile.
- Familiarity with Valgrind and similar analysis tools.
- Experience with version control tools like Git.
- Experience writing and maintaining automated tests.
- Experience in capital markets/trading domain is a plus.
Skills:
- Strong problem-solving and analytical thinking.
- Clear and effective communication.
- Self-driven with the ability to work independently.
- Passionate about high-quality software and strong engineering practices.
- Comfortable working in a fast-paced, collaborative environment.
Job Title: C Developers
Company Name: Chella Software Private Limited
Company Website: https://www.chelsoft.com/
Company details
THE PARTNER OF CHOICE FOR FINANCIAL MARKETS
Our deep domain experience, ultra-high-performance software solutions, and on-time project delivery make us the preferred partner for the financial markets.
Over the last two decades, Chella Software has built deep domain experience in the financial markets and a capability for developing ultra-high-performance software that can handle very high volumes of data with the lowest levels of latency.
We are now preferred partners for a host of Central Banks, Stock Exchanges, Clearing Corporations, Brokerages, and Institutional Investors across 12 countries.
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Location: Mumbai
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Days of Working: 5 Days a week
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Job Description:
- Programming Languages: C Platform: Linux and Windows environment
- Comfortable with software development on Unix/Linux platforms • Strong debugging skills
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- Strong analytical skills to diagnose/resolve complex issues • Ability to multi-task and stay organized in a dynamic work environment.
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- Highly proficient programming skills [C family]
- Excellent algorithm-design skills
- Very good knowledge of database concepts and technology, in particular SQL and relational algebra, and query optimization
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- Planning, estimation, and design usually done in a group
- Working closely with end-users (traders) to understand their requirements and needs
- Working closely with the other members of the MC team to identify and employ strategies and solutions to best support the trading desk
- Working closely with the rest of the SPG to identify and employ strategies and solutions to best support the needs of the MC team
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The recruiter has not been active on this job recently. You may apply but please expect a delayed response.
A Day in the Life:
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- Perform manual tests on payment gateway systems, including transaction flows and API validations.
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StrideOne is a unified tech-enabled financial platform and NBFC focused on enabling MSMEs and SMEs through structured credit solutions, receivables financing, and receivables management. We are designed to simplify access to capital, improve cash flow visibility, and support risk-aware financial decision-making for growing businesses across industries. With a steadily growing disbursement footprint, an expanding anchor network, and established partnerships with multiple lending institutions, StrideOne is entering its next phase of growth. The organisation is building a financial ecosystem that combines lending, receivables management, and data-driven workflows, positioning itself to scale sustainably while maintaining strong governance, portfolio quality, and operational discipline.
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Tech Stack: Proficiency in modern web technologies (Python is a plus), relational databases, and cloud platforms (AWS, Azure, GCP).
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Scalability & Performance: Experience with designing highly scalable and performant systems. Knowledge of caching, database sharding, partitioning, and high-throughput systems.
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Analytical Skills: Strong problem-solving skills with the ability to analyze complex security issues and provide practical solutions.
Soft Skills: Strong communication skills with the ability to explain complex technical concepts to non-technical stakeholders. Experience working in agile, collaborative environments.
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- Strong understanding of multithreading and memory management
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Technical Leadership and Architecture
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● Experience: 5+ years of proven software engineering experience, with a track record of leading small engineering teams or mentoring junior devs.
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Mandatory:
- The candidates should be from Capital Market domain
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- 12–18 years in the tech industry, with 2–4 years in technical leadership or managerial roles.
- Technical Expertise: Expertise in C++ development, enterprise architecture, and scalable system design, and proficiency in performance optimization, scalability, software architecture, and networking principles. Extensive experience managing the full development lifecycle of large-scale software products, from concept to deployment.
- Strong knowledge of STL containers, multi-threading concepts, and algorithms. Solid understanding of memory management and efficient resource utilization.
- Microservices Architecture Expertise: Experience in designing and implementing scalable, reliable microservices.
- Strong Communication & Decision-Making Skills: Ability to clearly articulate trade-offs, make informed decisions, and ensure alignment across stakeholders.
- Commitment to Creating and fostering Engineering Excellence: Deep understanding of best practices, including code quality, testability, security, and release management, and passion for fostering a strong engineering culture and continuously improving developer workflows and tools.
- Self-Driven and Motivated: Ability to operate independently while driving impactful results.
Key responsibilities:
- Technical Expertise:
○ C++ coding and debugging to strengthen and optimize systems.
○ Design and architecture (HLD/LLD) to ensure scalable and robust solutions.
○ Implementing and enhancing DevOps, Agile, and CI/CD pipelines to
improve development workflows.
○ Managing escalations and ensuring high-quality customer outcomes.
- Architecture & Design:
○ Define and refine the architectural vision and technical roadmap for enterprise
software solutions.
○ Design scalable, maintainable, and secure systems in line with business goals.
○ Collaborate with stakeholders to translate requirements into technical
solutions.
○ Driving engineering initiatives to foster innovation, efficiency, and excellence.
- Project Management:
○ Oversee project timelines, deliverables, and quality assurance processes.
○ Coordinate cross-functional teams to ensure seamless integration of systems.
○ Identify risks and proactively implement mitigation strategies.
- Technical Leadership:
○ Lead and mentor a team of engineers, fostering a collaborative and high- performance culture.
○ Provide technical direction and guidance on complex software engineering challenges
○ Drive code quality, best practices, and standards across the engineering team.





