
- 4–7 years of professional C++ experience in performance-critical systems
- Expert knowledge of modern C++ (C++11/14/17)
- Strong understanding of data structures, algorithms, and memory models
- Deep experience with multithreading, atomics, lock-free programming, and CPU cache behaviour
- Excellent knowledge of Linux internals and system-level programming
- Experience with low-level debugging and profiling (gdb, perf, valgrind, flamegraphs)
- Proficiency with CMake/Make and Git
2. Trading Systems Experience (Highly Preferred)
- Hands-on experience with order management systems (OMS) and execution engines
- Knowledge of exchange protocols: FIX, ITCH, OUCH, FAST
- Experience handling market data feeds (L1/L2, multicast, UDP)
- Understanding of latency measurement, clock synchronization, and time stamping
- Experience with network tuning (kernel bypass, socket tuning, CPU pinning)
- Familiarity with trading lifecycle, risk checks, and throttling mechanisms
3. Education
- Bachelor’s or Master’s degree in Computer Science, Engineering, or related discipline
4. Soft Skills (Important for Trading Firms)
- Ability to work under extreme time and accuracy pressure
- Strong ownership of production systems
- Clear and direct communication with traders and quants
- Bias toward simple, fast, and reliable designs
5. Key Responsibilities
- Design, develop, and optimize ultra-low-latency C++ trading applications
- Build and maintain exchange connectivity and order execution systems
- Develop real-time market data pipelines with strict latency requirements
- Optimize systems at CPU, memory, and network levels
- Implement lock-free or low-lock concurrent designs
- Analyze latency using profiling tools and improve tail latency
- Ensure high availability, fault tolerance, and rapid recovery
- Work closely with Traders and Quant Researchers to implement strategies
- Participate in architecture and performance design reviews
- Review code, enforce best practices, and mentor junior engineers
- Support production systems and handle time-critical issues when needed

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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Job Description below:
Required Skill Set
Senior Software Engineer- Java
- Experience in Core Java 5.0 and above, Data Structures, OOPS, Multithreading, Algorithms, Collections, Unix/Linux
- Possess good architectural knowledge and be aware of enterprise application design patterns.
- Should have the ability to analyze, design, develop and test complex, low-latency client-facing applications.
- Good development experience with RDBMS
- Good knowledge of multi-threading and high-volume server-side development
- Basic working knowledge of Unix/Linux
- Excellent problem solving and coding skills in Java
- Strong interpersonal, communication and analytical skills.
- Should have the ability to express their design ideas and thoughts.
Job Brief-
· Understand product requirements and come up with solution approaches
· Build and enhance large scale domain centric applications
· Deploy high quality deliverables into production adhering to the security, compliance and SDLC guidelines

We are looking for an experienced Python Developer with 5–6 years of hands-on experience in designing, developing, and maintaining scalable backend applications and APIs. The ideal candidate should have strong expertise in Python, backend frameworks, databases, and cloud/deployment practices. The candidate should be capable of working in a fast-paced environment and collaborating with cross-functional teams to deliver high-quality software solutions.
Key Responsibilities
- Design, develop, test, and maintain robust and scalable Python-based applications.
- Build and integrate RESTful APIs and backend services.
- Work on server-side logic, database integration, and performance optimization.
- Collaborate with frontend developers, QA teams, DevOps, and product teams for end-to-end delivery.
- Write reusable, testable, and efficient code following best practices.
- Debug, troubleshoot, and resolve production issues.
- Participate in code reviews, technical design discussions, and architecture planning.
- Optimize applications for maximum speed, scalability, and reliability.
- Implement security and data protection measures.
- Work with CI/CD pipelines and deployment processes.
Required Skills
- Strong experience in Python development with 5–6 years of relevant experience.
- Hands-on experience with Python frameworks such as:
- Django
- Flask
- FastAPI
- Strong understanding of OOPs, Data Structures, and Algorithms.
- Experience in building and consuming REST APIs.
- Good knowledge of SQL and relational databases like:
- MySQL
- PostgreSQL
- Experience with NoSQL databases like:
- MongoDB
- Redis (preferred)
- Knowledge of ORM frameworks such as SQLAlchemy or Django ORM.
- Familiarity with Git/GitHub/GitLab version control.
- Understanding of unit testing, debugging, and code quality practices.
- Experience in working with Linux/Unix environments.
- Knowledge of Docker, containerization, and deployment concepts.
- Exposure to cloud platforms like AWS / Azure / GCP is preferred.
Preferred / Good to Have Skills
- Experience in microservices architecture.
- Knowledge of Celery, asynchronous processing, and message queues like:
- RabbitMQ
- Kafka
- Familiarity with CI/CD pipelines.
- Experience in writing clean architecture and scalable backend systems.
- Exposure to DevOps practices is a plus.
- Experience in Agile/Scrum methodology.
An excellent Python developer should have a higher understanding of the Python languages. They should be capable to accomplish a number of tasks using Python.Coordinating with development teams to find out the needs of the application.
- Using the Python programming language to create scalable code.
- Application testing and bug fixing.
- Creating the back-end elements.
- Utilising server-side logic to incorporate user-facing components.
- Evaluating and ranking customer feature requests.
- Integrating storage methods for data.
- Design and implementation of high-performance, low-latency applications.
- Working in concert with front-end programmers.
- Upgrading the functionality of current databases.
- Creating digital technologies to track online activity.
Skills Required ::
- Python Development
- C# Development
- .NET Framework / .NET Core
- REST API Development
- JSON Handling
- API Integrations
- Databases
- Query Optimization
- Git Version Control
- Azure DevOps
- Debugging & Troubleshooting
- Cloud Application Development
Minimum 7-12 Years of Core Java Programming with Collections Framework, Concurrent Programming, Multi-threading (Good knowledge in Executor service, Forkjoin pool and other threading concepts)
· Good knowledge of the JVM with an understanding of performance and memory optimization.
· Extensive and expert programming experience in JAVA programming language (strong OO skills preferred).
· Excellent knowledge on collections like, Array List, Vector, LinkedList, Hashmap, HashTable, HashSet is mandate.
· Exercised exemplary development practices including design specification, coding standards, unit testing, and code-reviews.
· Expert level understanding of Object Oriented Concepts and Data Structures
· Good experience in Database (Sybase, Oracle or SQL Server) like indexing (clustered, non clustered), hashing, segmenting, data types like clob / blob, views (materialized), replication, constraints, functions, triggers, procedures etc.
About Us
We began in 2015 with an entrepreneurial vision to bring a digital change in the manufacturing landscape of India. With a team of 1500(1k cluster guys) we are working towards the digital transformation of business in the manufacturing industry across domains like Footwear, Apparel, Textile, Accessories etc. We are backed by investors such as Info Edge (Naukri.com ), Matrix Partners, Sequoia, Water Bridge Ventures and select Industry leaders.
Today, we have enabled 4000+ Manufacturers to digitize their distribution channel.
Roles & Responsibilities
Writing and testing code, debugging programs and integrating applications with third-party web services. To be successful in this role, you should have experience using server-side logic and work well in a team.
Ultimately, you'll build highly responsive web applications that align with our business needs. Write effective, scalable code Develop back-end components to improve responsiveness and overall performance Integrate user-facing elements into applications.
Test and debug programs
Improve functionality of existing systems Implement security and data protection solutions Assess and prioritize feature requests
Coordinate with internal teams to understand user requirements and provide technical solutions Expertise in at least one popular Python framework (like Django, Flask, etc)
Team spirit
Good problem-solving skills
Requirements
1 to 5 years of experience as a Python Developer
Hands on experience of Flask, Django or Gin or Revel or Sanic
Knowledge of design/architectural patterns will be considered as a plus
Experience working in an agile development environment with a strong focus on rapid software development
Experience in AWS or similar cloud technologies
Excellent troubleshooting and debugging skills
Proven ability to complete assigned task according to the outlined scope and timeline
Experience with messaging frameworks such as SQS/Kafka/RabbitMq
Experience with Elastic Search
Willingness to learn new and different technologies
Roles & Responsibilities:
- Excellent problem-solving & analytical skills & OO principles
- Solid understanding of the data structure & algorithms.
- Expert knowledge with any one of the Javascript Framework such as Node Js.
- Any additional experience with Java or python, GoLang would be nice to have.
- Experience working with SQL database like MySQL or PostgreSQL
- Experience working with NoSQL databases like mongoDB, couchbase would be nice to have
- Working experience with cache like redis, mem cached or elasticache would be nice to have
- Working experience with Message Queues would be a great advantage.
- Experience with deployment & AWS would be nice to have
- Ability to do in depth analysis or problem statement or use case & Build robust & scalable architecture
- Logging & monitoring of the production system in real time
- Lead a team of 2-4 team members & make sure team practices defined coding practices across the project.
You will be building product features solving complex business problems using state of the art technologies (Docker, Kubernetes, GCP, Python, Angular, ML/AI) in an ownership and integrity driven culture.
What will you do:
- Architect full-stack solutions for complex business requirements in a fast-paced environment while optimising for scalability, performance, concurrency, availability, security and code quality.
- Own and execute engineering projects end to end including API design, DB design, project planning, coding, and fluent communication with the rest of the team.
What we’re looking for:
- Bachelors/Masters in Computer Science or a related field
- Experience 3-6 years
- Strong ownership, integrity and drive to succeed individually and as a startup
- Good grasp on algorithms and data structures







