
JOB DESCRIPTION:
Location: Pune, Mumbai
Mode of Work : 3 days from Office
DSA(Collections, Hash maps, trees, Linkedlist and Arrays, etc), Core Oops concepts(Multithreading, Multi Processing, Polymorphism, Inheritance etc) Annotations in Spring and Spring boot, Java 8 Vital features, database Optimization, Microsevices and Rest API
- Design, develop, and maintain low-latency, high-performance enterprise applications using Core Java (Java 5.0 and above).
- Implement and integrate APIs using Spring Framework and Apache CXF.
- Build microservices-based architecture for scalable and distributed systems.
- Collaborate with cross-functional teams for high/low-level design, development, and deployment of software solutions.
- Optimize performance through efficient multithreading, memory management, and algorithm design.
- Ensure best coding practices, conduct code reviews, and perform unit/integration testing.
- Work with RDBMS (preferably Sybase) for backend data integration.
- Analyze complex business problems and deliver innovative technology solutions in the financial/trading domain.
- Work in Unix/Linux environments for deployment and troubleshooting.

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.
Connect with the team
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How do Technogisers function?
Value: Exploring technologies and implementing them on the projects provided they make business sense and deliver value.
Engagement: Be it offshore or onshore, we engage ourselves daily with the clients. This assists in building a trustworthy relationship at the same time, collaborating to come up with strategic solutions to business problems.
Solution: We are involved in providing hands-on contributions towards Backend & Front-end design and development at the same time, flourishing our DevOps culture.
Thought Leadership: Attend or present technical meet-ups/workshops/conferences to share knowledge and help build Technogise brand.
Note: All our roles are customer-facing roles.
This is a full-time 5 days work from office role as a Technology Consultant located in Hyderabad.
We are looking for people who can join us immediately or within 30 days and who are open to travel.
Core Skills:
We are looking for 2-7 years of industry experience exclusively in Backend development with Java , Spring Boot , Kafka , PL/SQL and AI technologies.
- Influence technical decision-making and high-level design decisions - choice of frameworks and tech approach.
- Demonstrate the ability to understand different approaches for application, and integration and influence decisions by making appropriate trade-offsWays of working:
- You communicate effectively with other roles in the project at the team and client levels
- You drive discussions effectively at the team and client levels. Encourage others to participateGoing beyond
- Establish credibility within the team as a result of technical and leadership skills
- Mentoring fellow team members within the project team and providing technical guidance to others beyond project boundaries
- Actively participate in organisational initiatives
Location: Bangalore
Department: Engineering
Reports to: SVP
Experience required: 6+ years
About Tracxn:
Tracxn (Tracxn.com) is a Bangalore-based product company providing a research and deal sourcing platform for Venture Capital, Private Equity, Corp Dev, and professionals working around the startup ecosystem.
We are a team of 600+ working professionals serving customers across the globe. Our clients include Funds like Andreessen Horowitz, Matrix Partners, GGV Capital, and Large Corporations such as Citi, Embraer & Ferrero.
Founders
- Neha Singh (ex-Sequoia, BCG | MBA - Stanford GSB)
- Abhishek Goyal (ex-Accel Partners, Amazon | BTech - IIT Kanpur)
About Technology Team:
Tracxn's Technology team is 60+ members strong and growing. The technology team is subdivided into multiple smaller teams, each owning one or more services/components of the technology platform. Ours is a young team of motivated engineers with a minimal management structure where almost everyone is actively involved in technical development and design activities. We have a team-centric culture where the ownership and responsibility of a feature or module lie with a team compared to an individual.
We value ownership, continuous learning, consistency, and discipline as a team.
Our Tech Stacks:
We work on an array of technologies, including but not limited to backend and frontend systems such as Java, Python, Spring Boot, Node.js, ReactJS, Next.js, Webpack, and Storybook; cloud and serverless platforms like AWS, etc; data and infrastructure technologies such as Elastic Stack (Elasticsearch), MongoDB, MySQL, Redis, Kafka, and Ansible; large-scale web crawling solutions; modern data pipelines and ETL workflows; and AI/ML-driven projects.
Job Overview:
We are looking for experienced software engineers with 6+ years of overall software development experience, including backend development and proven people-management skills. The ideal candidate will lead the engineering team(s), drive technical excellence, and ensure timely delivery of high-quality software solutions.
Job Responsibilities:
- Lead, mentor, and manage a team of software engineers
- Own technical planning, architecture discussions, and execution
- Collaborate with product managers and stakeholders
- Drive best practices in software development, testing, and deployment
- Conduct code reviews and ensure high engineering standards
- Manage delivery timelines, resource planning, and technical risks
- Support hiring, onboarding, and performance management of engineers
Job Requirements :
Professional Experience
- Proven experience leading or managing software engineering teams
- Track record of delivering complex, scalable software systems
- Experience driving technical initiatives and influencing architectural decisions
- Strong collaboration experience with product, design, and cross-functional teams.
Technical Leadership & Management
- Ability to mentor, coach, and grow engineers across different experience levels
- Experience conducting performance reviews and providing technical feedback
- Strong ownership of team delivery, timelines, and quality
- Experience balancing hands-on technical work with people management
Backend & System Architecture Expertise
- Strong proficiency in modern backend architectures, design patterns, and microservices architecture.
- Proficiency in at least one server-side programming language (e.g., Java, Python, etc.)
- Solid understanding of API design principles and implementation
- Hands-on experience with relational and non-relational databases and knowledge of data pipelines and data warehousing concepts.
Technical Competencies
- Strong system design and problem-solving skills
- Knowledge of caching strategies, performance optimization, and scalability
- Understanding of data modeling and query optimization
- Familiarity with search and indexing technologies
- Understanding of security best practices in backend systems
Culture:
- Work with performance-oriented teams driven by ownership and passion.
- Learn to design systems for high accuracy, efficiency, and scalability.
- No strict deadlines, focus on delivering quality work.
- Meritocracy-driven, candid culture. No politics.
- Very high visibility regarding which startups and markets are exciting globally.
Java Developer – Job Description
Wissen Technology is now hiring for a 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. - 5-8 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.
We are looking for a passionate and experienced Java Developer with over 4 years of hands-on experience in building robust and scalable backend systems using Java, Spring Boot, and Microservices architecture.
Key Responsibilities:
- Design, develop, test, and deploy high-performance, scalable, and secure backend services using Java 8+, Spring Boot, and Microservices.
- Participate in the entire software development lifecycle (SDLC), from requirements gathering to production deployment and support.
- Collaborate with frontend developers, DevOps engineers, and product owners to deliver end-to-end features.
- Optimize application performance and ensure high availability and responsiveness.
- Write clean, maintainable, and reusable code while following best practices (coding standards, unit testing, CI/CD, etc.).
- Develop RESTful APIs and ensure their quality and consistency.
- Handle integration with external systems and third-party services.
- Participate in code reviews, provide constructive feedback, and mentor junior developers.
Technical Skills Required:
- Languages: Java 8 or above
- Frameworks: Spring Boot, Spring MVC, Spring Security
- Architecture: Microservices architecture and design patterns
- Databases: MySQL/PostgreSQL, MongoDB (optional)
- Messaging: Kafka, RabbitMQ (optional)
- API Development: RESTful APIs, Swagger/OpenAPI
- Version Control: Git, GitHub/GitLab
- Tools: Maven/Gradle, Jenkins, Docker
- Testing: JUnit, Mockito
- Cloud (optional): AWS/Azure/GCP exposure
- CI/CD & DevOps tools (optional): Jenkins, Docker, Kubernetes
Nice to Have:
- Experience in containerization and orchestration (Docker, Kubernetes).
- Knowledge of API Gateway, Service Registry (e.g., Eureka), and Circuit Breakers (e.g., Hystrix or Resilience4j).
- Experience with Agile methodologies (Scrum/Kanban).
- Familiarity with monitoring and logging tools (ELK, Prometheus, Grafana, etc.).
We are seeking a highly skilled Backend Developer to join our team and contribute to the development and improvement of both our customer-centric SaaS platform and internal systems. As a Backend Developer, you will be responsible for designing, implementing, and maintaining the server-side logic of our application, ensuring high performance, scalability, and security.
As a Backend Developer with expertise in Java, and PostgreSQL, you will play a critical role in developing and maintaining the backend infrastructure of our SaaS and internal platforms, ensuring its reliability, scalability, and performance. Join our team and be a part of building cutting-edge software solutions that empower our customers and drive business growth.
Responsibilities:
- Collaborate with cross-functional teams, including front-end developers, product managers, and designers, to understand project requirements and translate them into technical specifications.
- Design and develop server-side logic, APIs, and database schema to support the functionality and performance requirements of our SaaS platform.
- Write clean, modular, and well-documented code using any relevant programming language preferably Java with SpringBoot.
- Optimize the backend systems for maximum speed and scalability, ensuring high performance and responsiveness of the application.
- Implement data storage solutions using PostgreSQL or other relational databases, ensuring data integrity and security.
- Conduct thorough testing and debugging to identify and resolve any issues or bugs in the backend code.
- Stay up-to-date with emerging technologies, industry trends, and best practices in backend development and contribute to the continuous improvement of our development processes.
Requirements:
- Proven work experience as a Backend Developer or similar role, with a focus on server-side development.
- Proficiency in working with relational databases, particularly PostgreSQL, and writing efficient SQL queries.
- Familiarity with SaaS concepts and architecture.
- Experience with API design and development, including RESTful APIs.
- Solid understanding of software development principles, including object-oriented programming, design patterns, and data structures.
- Experience with version control systems, such as Git.
- Strong problem-solving and analytical skills, with keen attention to detail.
- Excellent communication and teamwork skills, with the ability to collaborate effectively with cross-functional teams.
- Bachelor's degree in Computer Science, Engineering, or a related field is preferred, but not mandatory.
You will be responsible for building these applications, as well as coordinating with the teams responsible for other layers of the product.
You will also be leading a team of developers ensuring timely delivery of high quality deliverables.
Responsibilities:
- Work across all phases of application development including requirement gathering, coding, release, bug fixing, documentation.
- Lead and mentor a team of developers guiding them in their day to day activities.
- Collaborate with other engineering teams to develop and deliver new features and enhance existing ones.
- Rapid prototyping (POCs) based on requirements.
- Test, debug and fix any functional or non-functional issues.
- Work with the architects to ensure feasibility of the design while ensuring all quality attributes are met.
- Participate in deployment and release activities.
Job Requirements:
- 5+years of relevant experience.
- Experience in leading a team.
- Expertise in Python, Django DRF, REST APIs
- Experience with Document DB, RDBMS and ORM.
- Demonstrated ability to write clean and testable code.
- Knowledge of MongoDB, PostgreSQL, Redis, ElasticSearch is preferred.
- Exposure to AWS will be an added advantage.
- Familiarity with front-end technologies (ReactJS, Javascript etc) will be a plus.
- Strong team player who can work efficiently in a highly collaborative effort.
- Self-motivated and able to work independently as well as within a team.
About Rolling Arrays
Rolling Arrays provides HR Software and HR System Implementation Services (SAP SuccessFactors, Qualtrics, Reimburse, CICO, eFile, eAuthoring) to Clients in Singapore, Malaysia, Australia, UAE, Hong Kong. Rolling Arrays (RA) was featured as Singapore’s Top 75 fastest growing companies by the leading newspaper of Singapore - The Straits Times in 2021 where RA was ranked 48. Rolling Arrays has 2 lines of businesses:
HR System Implementation Services:
Rolling Arrays is regarded as number ONE mid-size firm in the South East Asian Market with a strong track record of 12 Years and more than 200 enterprise level HR Technology Implementation projects till date. The services include –
- SAP SuccessFactors Design Consulting
- SAP SuccessFactors Implementation
- SAP SuccessFactors Change Management
- SAP SuccessFactors Support Services (AMS)
HR Software Products in Rolling Arrays’ portfolio (partner’s products and own products):
- SAP SuccessFactors (World’s leading End to End Cloud HR Software solution)
- Qualtrics (World’s leading Experience Management Software)
- Reimburse (AI Enabled Travel & Expense Management Software for Enterprises)
- CICO (Intelligent Time Capture Machine, a software alternative to Physical Biometric Devices)
- eFile (Digitize and contextualize all employee documents in one place)
- eAuthoring (Author and publish your own learning content to capture tacit knowledge in the organization)
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Bachelor’s or master’s degree in Computer Engineering, Computer Science, Computer Applications, Mathematics, Statistics, or related technical field. Relevant experience of at least 3 years in lieu of above if from a different stream of education.
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Well-versed in and 3+ hands-on demonstrable experience with: ▪ Stream & Batch Big Data Pipeline Processing using Apache Spark and/or Apache Flink.
▪ Distributed Cloud Native Computing including Server less Functions
▪ Relational, Object Store, Document, Graph, etc. Database Design & Implementation
▪ Micro services Architecture, API Modeling, Design, & Programming -
3+ years of hands-on development experience in Apache Spark using Scala and/or Java.
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Ability to write executable code for Services using Spark RDD, Spark SQL, Structured Streaming, Spark MLLib, etc. with deep technical understanding of Spark Processing Framework.
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In-depth knowledge of standard programming languages such as Scala and/or Java.
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3+ years of hands-on development experience in one or more libraries & frameworks such as Apache Kafka, Akka, Apache Storm, Apache Nifi, Zookeeper, Hadoop ecosystem (i.e., HDFS, YARN, MapReduce, Oozie & Hive), etc.; extra points if you can demonstrate your knowledge with working examples.
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3+ years of hands-on development experience in one or more Relational and NoSQL datastores such as PostgreSQL, Cassandra, HBase, MongoDB, DynamoDB, Elastic Search, Neo4J, etc.
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Practical knowledge of distributed systems involving partitioning, bucketing, CAP theorem, replication, horizontal scaling, etc.
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Passion for distilling large volumes of data, analyze performance, scalability, and capacity performance issues in Big Data Platforms.
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Ability to clearly distinguish system and Spark Job performances and perform spark performance tuning and resource optimization.
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Perform benchmarking/stress tests and document the best practices for different applications.
-
Proactively work with tenants on improving the overall performance and ensure the system is resilient, and scalable.
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Good understanding of Virtualization & Containerization; must demonstrate experience in technologies such as Kubernetes, Istio, Docker, OpenShift, Anthos, Oracle VirtualBox, Vagrant, etc.
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Well-versed with demonstrable working experience with API Management, API Gateway, Service Mesh, Identity & Access Management, Data Protection & Encryption.
Hands-on experience with demonstrable working experience with DevOps tools and platforms viz., Jira, GIT, Jenkins, Code Quality & Security Plugins, Maven, Artifactory, Terraform, Ansible/Chef/Puppet, Spinnaker, etc.
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Well-versed in AWS and/or Azure or and/or Google Cloud; must demonstrate experience in at least FIVE (5) services offered under AWS and/or Azure or and/or Google Cloud in any categories: Compute or Storage, Database, Networking & Content Delivery, Management & Governance, Analytics, Security, Identity, & Compliance (or) equivalent demonstrable Cloud Platform experience.
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Good understanding of Storage, Networks and Storage Networking basics which will enable you to work in a Cloud environment.
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Good understanding of Network, Data, and Application Security basics which will enable you to work in a Cloud as well as Business Applications / API services environment.
About Us
DataWeave provides Retailers and Brands with “Competitive Intelligence as a Service” that enables them to take
key decisions that impact their revenue. Powered by AI, we provide easily consumable and actionable
competitive intelligence by aggregating and analyzing billions of publicly available data points on the Web to
help businesses develop data-driven strategies and make smarter decisions.
Products@DataWeave
We, the Products team at DataWeave, build data products that provide timely insights that are readily
consumable and actionable, at scale. Our underpinnings are: scale, impact, engagement, and visibility. We help
businesses take data driven decisions everyday. We also give them insights for long term strategy. We are
focussed on creating value for our customers and help them succeed.
How we work
It's hard to tell what we love more, problems or solutions! Every day, we choose to address some of the hardest
data problems that there are. We are in the business of making sense of messy public data on the web. At
serious scale! Read more on Become a DataWeaver
What do we offer?
● Opportunity to work on some of the most compelling data products that we are building for online
retailers and brands.
● Ability to see the impact of your work and the value you are adding to our customers almost immediately.
● Opportunity to work on a variety of challenging problems and technologies to figure out what really
excites you.
● A culture of openness. Fun work environment. A flat hierarchy. Organization wide visibility. Flexible
working hours.
● Learning opportunities with courses, trainings, and tech conferences. Mentorship from seniors in the
team.
● Last but not the least, competitive salary packages and fast paced growth opportunities.
Role and Responsibilities
● Build a low latency serving layer that powers DataWeave's Dashboards, Reports, and Analytics
functionality
● Build robust RESTful APIs that serve data and insights to DataWeave and other products
● Design user interaction workflows on our products and integrating them with data APIs
● Help stabilize and scale our existing systems. Help design the next generation systems.
● Scale our back end data and analytics pipeline to handle increasingly large amounts of data.
● Work closely with the Head of Products and UX designers to understand the product vision and design
philosophy
● Lead/be a part of all major tech decisions. Bring in best practices. Mentor younger team members and
interns.
● Constantly think scale, think automation. Measure everything. Optimize proactively.
● Be a tech thought leader. Add passion and vibrance to the team. Push the envelope.
Skills and Requirements
● 4-7 years of experience building and scaling APIs and web applications.
● Experience building and managing large scale data/analytics systems.
● Have a strong grasp of CS fundamentals and excellent problem solving abilities. Have a good
understanding of software design principles and architectural best practices.
● Be passionate about writing code and have experience coding in multiple languages, including at least
one scripting language, preferably Python.
● Be able to argue convincingly why feature X of language Y rocks/sucks, or why a certain design decision
is right/wrong, and so on.
● Be a self-starter—someone who thrives in fast paced environments with minimal ‘management’.
● Have experience working with multiple storage and indexing technologies such as MySQL, Redis,
MongoDB, Cassandra, Elastic.
● Good knowledge (including internals) of messaging systems such as Kafka and RabbitMQ.
● Use the command line like a pro. Be proficient in Git and other essential software development tools.
● Working knowledge of large-scale computational models such as MapReduce and Spark is a bonus.
● Exposure to one or more centralized logging, monitoring, and instrumentation tools, such as Kibana,
Graylog, StatsD, Datadog etc.
● Working knowledge of building websites and apps. Good understanding of integration complexities and
dependencies.
● Working knowledge linux server administration as well as the AWS ecosystem is desirable.
● It's a huge bonus if you have some personal projects (including open source contributions) that you work
on during your spare time. Show off some of your projects you have hosted on GitHub.











