Software Developer

JOB DESCRIPTION

Experience: 3-5 years

Wissen Technology is now hiring for a Senior Java Developer - Bangalore with hands-on experience in Core Java, algorithms, data structures, multithreading and SQL. We are solving complex technical problems in the industry and need talented software engineers to join our mission and be a part of a global software development team. A brilliant opportunity to become a part of a highly motivated and expert team which has made a mark as a high-end technical consulting. 

Required Skills:

• Exp. - 3-5 years
• Experience in Core Java and Spring Boot.
• Extensive experience in developing enterprise-scale applications and systems. Should 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-performance server-side development.
• Basic working knowledge of Unix/Linux.
• Excellent problem solving and coding skills.
• Strong interpersonal, communication and analytical skills.
• Should have the ability to express their design ideas and thoughts

Software Engineer, Low-Latency Systems

• Employment Type: Full-time
• Experience Level: senior-level (7–10 years)

About the Role

We are hiring a Software Engineer, Low-Latency Systems to design and optimize the core infrastructure powering our algorithmic trading systems. In this role, you will work on latency-critical execution paths where nanoseconds, cache lines, memory layout, and network behavior matter.

This is a hands-on engineering position for someone who enjoys building high-performance systems and reasoning deeply about correctness, throughput, and tail latency. Prior trading domain experience is helpful but not required—we value engineering depth and systems thinking above all else.

What You’ll Do (Responsibilities)

• Build Core Infrastructure: Design, develop, and maintain low-latency components including order routing, market data handling, and execution pipelines.
• Optimize Performance: Profile and optimize critical code paths to minimize throughput and tail latency.
• Collaborate Across Teams: Work closely with quant and trading teams to translate complex strategy requirements into highly efficient infrastructure primitives.
• Drive System Design: Contribute to architectural decisions around threading models, memory layout, and network stack configurations.
• Ensure Reliability: Improve observability and operational performance across trading infrastructure. Participate in on-call rotations, incident response, and post-mortems to keep systems running smoothly.

What We’re Looking For (Requirements)

• Experience: 7 to 10 years of professional experience in systems engineering, with a demonstrable focus on low-latency systems or high-performance computing (HPC).
• Language Proficiency: Strong, production-level proficiency in Rust and/or C++.
• Systems Depth: Comfort reasoning about memory management, lock-free data structures, compiler behavior, and CPU-level performance.
• Tooling: Experience using Linux performance tooling such as perf, flamegraphs, strace, or similar tools.
• Networking Fundamentals: Solid understanding of network stack behavior, including TCP, UDP, multicast, and kernel bypass.
• Problem Solving: Ability to debug complex production issues and optimize systems under real-world constraints.

Nice to Have (Bonus Points)

• Prior exposure to trading systems, market data feeds, or exchange connectivity.
• Familiarity with financial market protocols (e.g., FIX, ITCH, OUCH).
• Experience with low-latency networking technologies like DPDK, RDMA, or kernel bypass.
• Familiarity with co-location environments and latency-sensitive infrastructure.

Culture & Fit

We are looking for an engineer who takes ownership, thrives in ambiguous and fast-moving environments, and holds an incredibly high bar for correctness and performance. If you love drilling down into the lowest levels of software to squeeze out maximum efficiency, we want to hear from you.

We are looking for a strong C# to build high-performance plugins, automation tools, and integrations for complex desktop and engineering software systems.

This role focuses on core software engineering, including plugin development, API integrations, and data processing. You will work on real-world problem solving involving structured data, workflows, and system integrations.

Key Responsibilities

• Design and develop robust applications and plugins using C#
• Build and maintain modular, scalable, and high-performance codebases
• Integrate with hird-party APIs and software platforms
• Work on data-heavy workflows involving structured and semi-structured data
• Debug, optimize, and improve existing systems
• Collaborate with cross-functional teams to convert requirements into technical solutions
• Write clean, testable, and well-documented code

Required Skills & Qualifications (Primary Hiring Criteria)

• Strong proficiency in C#
• 1–2 years of experience in software development
• Solid understanding of:
•  Object-Oriented Programming (OOP)
• Data Structures & Algorithms
• Design patterns

Experience in at least one of:

 Desktop application development

 Backend systems

 Plugin/add-in development

• Strong experience working with APIs and integrations
• Good debugging and problem-solving skills

Good to Have

• Experience with plugin ecosystems or extensible applications
• Familiarity with WPF / WinForms
• Exposure to Python scripting
• Experience with JSON, XML, SQL
• Interest in 3D systems, CAD, or engineering tools

Domain Exposure (On the Job)

• Working with BIM tools such as Autodesk Revit
• Developing automation for engineering and design workflows
• Handling geometric and spatial data

Basic Qualification: 

• Programming experience with at least one modern language such as Java, Node.js  
• Experience with NoSQL databases like MongoDB 
• 2+ years of experience contributing to the architecture and design (architecture, design patterns, reliability and scaling) of new and current systems. 
• Bachelor Degree in Computer Science or related field. 
• Computer Science fundamentals in object-oriented design, data structures, 
• algorithm design, problem solving, and complexity analysis. 

Preferred Qualification: 

• Experience building complex applications on distributed systems that have been successfully deployed for a large customer base. 
• Experience with Agile Scrum, having served as a Scrum Master and delivered results. 
• Application of advanced coding techniques, such as dependency injection. 
• Proven experience with: writing design documents, leading code reviews, 
• applying SCM, managing builds and managing releases. 
• Knowledge of important design patterns 
• Applying unit testing / TDD to reduce testing cycles and production support 
• load. 

• 3 - 5 years of progressive IT experience with a minimum of 1+ years in building Ruby on Rails Web applications and RESTful API endpoints
• Proficient with scripting languages, specifically Python and Bash
• Experience in Object Oriented Java Script.
• Must have Linux command line experience.
• Good experience in developing and integrating reliable REST web services.
• Possess good communication, organizational and creative thinking skills.
• Multi-tasking individual that likes to work both in a team environment and individually
• Excellent technical abilities, leadership, decision making, and adaptability to new technology
• Good knowledge of Agile processes and practice
• Team player