
Java Developer – Job Description Wissen Technology is now hiring for a Java Developer - Bangalore/Mumbai 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 to 8 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. About Wissen Technology: Wissen Technology is a niche global consulting and solutions company that brings unparalleled domain expertise in Banking and Finance, Telecom and Startups. Wissen Technology is a part of Wissen Group and was established in the year 2015. Wissen has offices in the US, India, UK, Australia, Mexico, and Canada, with best-in-class infrastructure and development facilities. Wissen has successfully delivered projects worth $1 Billion for more than 25 of the Fortune 500 companies. The Wissen Group overall includes more than 4000 highly skilled professionals. Wissen Technology provides exceptional value in mission critical projects for its clients, through thought leadership, ownership, and assured on-time deliveries that are always ‘first time right’. Our team consists of 1200+ highly skilled professionals, with leadership and senior management executives who have graduated from Ivy League Universities like Wharton, MIT, IITs, IIMs, and NITs and with rich work experience in some of the biggest companies in the world. Wissen Technology offers 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. We have been certified as a Great Place to Work® for two consecutive years (2020-2022) and voted as the Top 20 AI/ML vendor by CIO Insider.

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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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.
- 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
💡 Hiring: Java Developer & Support Engineer (Splunk) at Deqode
🔷 Experience- 6+ Years
🔷 Mode- Remote (Night Shift)
⏱️ Notice Period - Immediate joiners
(Only immediate joiners & candidates serving notice period)
We’re looking for a talented Java Developer & Support Engineer with strong skills in Java, Application Support, Splunk, and SQL (Insert/Update queries). You’ll develop Java apps, handle L2/L3 support, write and optimize SQL queries, and use Splunk for monitoring and analysis.
✅ Must Have:
- Solid Java/J2EE development experience
- Strong troubleshooting & production support skills
- Proficiency with SQL (Insert, Update, Delete, Select queries)
- Good knowledge of Splunk dashboards & log analysis
- Strong communication & problem-solving abilities
MUST HAVES:
- #java11, Java 17 & above only
- #springboot #microservices experience is must
- #cloud experience is must (AWS or GCP or Azure)
- Strong understanding of #functionalprogramming and #reactiveprogramming concepts.
- Experience with asynchronous programming and async frameworks/libraries.
- Proficiency in #sql databases (MySQL, PostgreSQL, etc.).
- WFO in NOIDA only.
Other requirements:
- Knowledge of socket programming and real-time communication protocols.
- Experience of building complex enterprise grade applications with multiple components and integrations
- Good coding practices and ability to design solutions
- Good communication skills
- Ability to mentor team and give technical guidance
- #fullstack skills with anyone of #javascript or #reactjs or #angularjs is preferable.
- Excellent problem-solving skills and attention to detail.
- Preferred experience with #nosql databases (MongoDB, Cassandra, Redis, etc.).
We are seeking a skilled and experienced Senior Backend Engineer proficient in Java to join our dynamic team. The ideal candidate will have 4-7 years of hands-on experience in Java development, particularly in building robust backend systems and microservices architecture. As a Senior Backend Engineer, you will collaborate with cross-functional teams to design, develop, and deploy scalable and efficient backend solutions to support our products and services.
Responsibilities:
- Design, develop, and maintain high-performance backend systems and microservices using Java.
- Collaborate with product managers, frontend engineers, and other stakeholders to understand requirements and translate them into technical specifications.
- Implement best practices in software development, including code reviews, testing, and documentation.
- Optimize and refactor existing codebase for improved performance, scalability, and maintainability.
- Troubleshoot and debug issues in production environments and provide timely resolutions.
- Stay updated with industry trends and emerging technologies to propose innovative solutions and improvements.
- Mentor junior engineers and contribute to their professional growth and development.
- Participate in agile ceremonies such as sprint planning, stand-ups, and retrospectives.
Requirements:
- Bachelor's degree in Computer Science, Engineering, or a related field.
- 4-7 years of professional experience in backend development with a focus on Java.
- Strong proficiency in Java programming language and its ecosystem.
- Experience with building scalable and distributed systems using microservices architecture.
- Proficiency in Spring Framework (Spring Boot, Spring MVC, Spring Data, etc.).
- Solid understanding of relational and NoSQL databases (e.g., MySQL, PostgreSQL, MongoDB).
- Experience with RESTful API design and implementation.
- Familiarity with cloud platforms such as AWS, Azure, or Google Cloud Platform.
- Knowledge of containerization and orchestration tools like Docker and Kubernetes is a plus.
- Excellent problem-solving skills and attention to detail.
- Strong communication and collaboration skills.
- Ability to work independently and in a team-oriented environment.
- Experience with Agile/Scrum methodologies.
Preferred Qualifications:
- Master's degree in Computer Science or a related field.
- Experience with DevOps practices and CI/CD pipelines.
- Knowledge of reactive programming frameworks like Akka or Vert.x.
- Familiarity with message broker systems such as Kafka or RabbitMQ.
- Contributions to open-source projects or active participation in the developer community.
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Excellent Project Management Skills - Effort estimation, scoping, prioritisation and timely delivery
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Runs daily stand-up, sprint review, iteration planning and retrospective
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Analyze the product requirements specs & designs, convert them to tech specs, write user stories, workflows & test criteria
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Ensure the completeness and accuracy of every feature developed with demos & verification from developers/QA and acceptance demo with Product Management
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Keep all stakeholders informed pro-actively on the progress, blockers, changes & issues
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Work with the teams to resolve people problems, dependencies, project roadblocks, and conflicts
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Implement and support software principles, rules and processes
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Collaborate effectively with cross functional teams, act as the primary technical contact, Take end to end ownership on mission critical projects
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Do the code reviews, quality checks, test effort planning, performance testing, UI & UX and code merges and deployments
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Build high energy, high performance and super productive teams, Proactively plan resource hiring, and the need for training and talent development
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BE/B.Tech/MCA preferably with Computer Science
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A solid foundation in computer science, with strong competencies in data structures, algorithms, and software design
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Minimum 8 years of hands-on experience in developing and delivering products and using Agile sprints
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Managing the overall Product releases from initial requirements till the final deliver
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Deep understanding of the fundamentals of iterative and incremental development, expertise in agile methodologies and frameworks
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Self-starter, proactive & a skilled decision maker in doing what is right
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Works independently & great at team collaboration
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Team Leader - Knack for influencing without being authoritative
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Possess Technical Breadth and effectively mentor tech team
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Must have very good recommendations from peers and managers in past companies
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Experience with Coding, Architecting & Developing, UX, Designs & Quality Assurance
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Experience with Cloud Deployments on AWS etc
Job Description:
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Key Responsibility Areas: |
· Design, build and deliver Enterprise software solutions. · Write code with standards and conventions and follow best practices. · Encourage and lead innovation and solid lifecycle processes. · Collaborate with development teams on work definition, estimation and prioritization · Lead and grow as a professional software engineer. · Full ownership of product deliveries and mentoring junior team members. · Preparing curriculum to train junior developers for Java Web Development · Strong client interactions to provide excellent Quality of Service. · Owning the code base and making sure all code is reviewed and is of very high quality. · Write and modify coding conventions and standards documents for all development |
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Required Skills: |
Technologies/Frameworks – · Core Java, J2EE, · Spring Core and Spring MVC, Sprint Boot, Spring Security, · JDBC, Hibernate, RESTful APIs, SOAP WebServices · Knowledge of JavaScript, JQuery, AJAX, HTML5, and CSS3, Angular is added advantage · Junit or Mockito frameworks · Maven, Git · Knowledge Data Structures, · SQL, MySQL · Designing relational database schemas · Basics of AWS, Cloud, Microservices
· BFSI, FinTech |
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Qualification |
B.E., B.Tech. from reputed institutes with good academic record |
Requirements
Required Qualifications and Skills:
- 3-5 years of work experience in the development background, with at least 2 years experience in Java, Spring, Sprint Boot, Hibernate or JPA, MySQL, Oracle, Spring MVC.
- B.E. degree in Computer Science, Graduate in Software Engineering or equivalent
- Experience in Core JAVA, Spring, Spring Boot Frameworks.
- Experience with ORM's like Hibernate.
- Good knowledge of developing RESTful web services using Spring Boot, Java1.x,Servlet2.4, JSP2.0, JDBC3.0, Java Mail, Struts2.x, HTML, HTML5, Angular7+, JavaScript, JSF, Bootstrap2.x-3.x, JQuery & CSS 3.x, Maven 3.x, Apache Tomcat7
- Knowledge of Cloud AWS.
- Experience in any Messaging Queue e.g. Apache Kafka, ActiveMQ, etc.
- Experience on Web services with REST and SOAP.
- Experience working on tool set like Eclipse IDE, SQL clients.
- Experience using application server like Jboss, TomCat, Wildfly, glassfish.
- Experience in using tools like SOAP UI, POSTMAN
- Ability to write SQL queries to fetch data.
- Knowledge of Micro services, Redis Cache and Mongo DB (or any other NoSQL) is good to have











