
About the role:
We are seeking a highly motivated Principal Engineer with expertise in building scalable, extensible customer payment solutions, identifying and addressing performance bottlenecks, collaborating with other team members across teams to innovate current/new products; Identify, communicate and implement best practices for the engineering team. Our engineering process is fully agile and has a really fast release cycle - which keeps our environment very energetic and fun.
What you will do:
- Architect, design and lead the development of key software infrastructure, systems, tools and processes, ensuring high scalability and performance.
- Collaborate with the product and other stakeholders across the company to solidify/ negotiate requirements and feasibility.
- Identify, influence and participate in making technical decisions that have a positive impact on engineering and business as a whole.
- Problem-solving that involves complex interactions, constraints imposed by systems, processes, people and physical goods.
- Drive automated solutions that enable better efficiency and process improvement
- Identify and address performance bottlenecks, collaborate with other team members across functions to innovate/improve current/new products by suggesting improvements to the software system.
- Identify, communicate and implement best practices for the engineering team.
- You will advocate for good, clean, well documented and performing code; follow standards and best practices.
- As a Principal Engineer, you will be additionally responsible for planning and timelines of all projects in your domain
We would love for you to have:
- Education: Bachelors/Masters in Computer Science
- Experience: 7-10 yrs recent hands-on experience of working on scalable systems and a diverse set of products/systems.
- Experience with Java stack. Hands-on experience with development and troubleshooting of services.
- Experience with SQL and NoSQL databases and Hadoop stack.
- Experience in System Design of complex Supply-Chain e-commerce systems, Algorithm design and their optimization is a huge plus.
- Strong working knowledge of any REST-based framework, OOPS, Design Patterns
- Expert level experience in building fault-tolerant and scalable platforms.
- Excellent problem-solving skills
- Strong verbal and written (technical) communication and able to work across teams like Business, Product, Engineering, Analytics, App Engineering seamlessly.
- Ability to deliver great results in an agile development
- Exposure to open-source libraries and frameworks.
- Experience with the full software development lifecycle, design, develop, review, debug, document, and deliver (especially in a multi-location organization).
- Ability and experience in the evaluation and integration of third-party systems and libraries and independent completion of POC. Prior experience in integrating with 3rd party Payment solution (like Stripe) is a plus.
- Passion for performance benchmarking and debugging

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JOB DESCRIPTION:
Location: mumbai, bangalore, pune
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.
Required Skills & Experience:
- 3– 8 years of strong hands-on experience in Core Java, Spring boot, microservices, data structures.
- Deep understanding of Object-Oriented Programming (OOP), data structures, algorithms, and design patterns.
- Proven experience with Spring, CXF, and REST/SOAP web services.
- Solid understanding of microservices architecture and distributed systems.
- Experience working with Sybase or other relational databases.
- Expertise in multithreading, concurrency, and high-throughput server-side development.
- Exposure to capital markets, sales & trading platforms, or similar financial services applications.
- Good working knowledge of Unix/Linux environments.
- Experience in solution architecture and design documentation is a strong plus.
- Strong problem-solving skills, analytical thinking, and a proactive attitude.
- Excellent communication and interpersonal skills to work effectively with global teams.
Preferred Qualifications:
- Bachelor’s or Master’s degree in Computer Science, Engineering, or related field.
- Previous experience in investment banking, capital markets, or financial technology domains.
For more details:
Website: www.wissen.com
Wissen Thought leadership : https://www.wissen.com/articles/
LinkedIn: Wissen Technology
Required Skills:
- 3+ year of experience in Development in JAVA technology.
- Strong Java Basics
- SpringBoot or Spring MVC
- Hands on experience on Relational Databases (SQL query or Hibernate) + Mongo (JSON parsing)
- Proficient in REST API development
- Messaging Queue (RabitMQ or Kafka)
- Microservices
- Any Caching Mechanism
- Good at problem solving
Good to Have Skills:
- 4+ years of experience in using Java/J2EE tech stacks
- Good understanding of data structures and algorithms.
- Excellent analytical and problem solving skills.
- Ability to work in a fast paced internet start-up environment.
- Experience in technical mentorship/coaching is highly desirable.
- Understanding of AI/ML algorithms is a plus.
Key Responsibilities:
- Development of a Single Page Application (SPA) and it's components in Typescript: deployed and optimized for progressive mobile and browsers using Angular 2 and Ionic 2 frameworks.
- Creating custom, general use modules and smart components which extend the elements and modules of core Angular framework.
- Creating self-contained, reusable, and testable modules and components in Typescript and using responsive HTML and CSS.
- Architecting and automating the build process for production, using task runners or scripts.
- Writing non-blocking code, and resorting to advanced techniques such as multi-threading, when needed
Skills and Qualifications:
- Should have experience with CSS 3, SCSS, Java script and HTML5.
- Full-time knowledge of Angular practices and commonly used modules based on extensive work experience. Or 2 Year or more experience with other industry-leading frameworks like React.
- Minimum 1-year experience in working and extending one of the CSS or UI frameworks like Ng-lightening, Angular-material
Education:
- BE / BTech / MCA
• Excellent interpersonal/communication skills, both verbal and written •
• 7+ years of experience in Java/Node.js, REST/Graph QL, Redis on AWS Fargate • Design and develop high quality back-end code (Node.js/Go/JAVA) • Excellent in one or more Go, Java, Node.js skills • In-depth knowledge of Restful / GraphQL API, JSON.
• Experience with CI/CD and tools like Git, Bitbucket and Jenkins.
• Solid understanding of relational databases (e.g., Postgres, MySQL) and experience in NoSQL (e.g., Graph DB, MongoDB, DynamoDB).
• Developing new software applications, features, and distributed services that support a high-scale web application
• Experience working in a fast-paced environment; continuous deployment, test-driven development, agile methodologies
• Stay current with the latest back-end technologies and best practices and share your findings with the team
• Help evolve our backend stack and mentor our other developers when it comes to patterns and best practices
• Work as part of an agile team across a variety of application domains
• Write structured, tested, readable and maintainable code • Participate in code reviews to ensure code quality and distributed knowledge
• Ability to contribute to each step of the product development process (ideation, implementation, and release)
• Experience with performance tuning, profiling, and debugging applications
● Fluency or understanding of specific languages, such as Python or Go.
● Strong understanding of the web development cycle and programming techniques and tools.
● Solid understanding of how REST APIs work: GET, POST, PUT and PATCH
● Basic understanding of AWS cloud and its services like lambda, EC2, Document DB, EKS etc.
● Understanding MongoDB would be a bonus.
● Excellent project management skills.
● Ability to work independently or with a group.
● Responsible for developing high end web applications in various areas related to
SAAS (Software as a service)
● Developing ideas for new programs, products, or features by monitoring industry
developments and trends
● Collaborating with the front-end developers and other team members to establish
objectives and design more functional, cohesive codes to enhance the user
experience
● Liaise with developers, designers and customer success teams to identify new
features
● Should have experience to integrate & customize third party plugins
● Knowledge of SaaS or e-commerce industry will be preferred
Required Skills:
● 5-7 years’ experience as a Sr. Web Developer in developing web applications
● Strong experience in PHP, MySQL, Laravel, Rest APIs, Ajax & jQuery
● Good exposure in Payment Gateway process
● Should have good exposure in Server Setup, AWS Console, Digital Ocean,
Handling DNS and Linux/Ubuntu command line
● Fluency or good understanding of Nodejs & MongoDB will be preferred
● In-depth understanding of the entire web development process such as design,
development and deployment
● Familiarity with front-end languages like HTML, JavaScript and CSS
● Strong understanding of the web development and programming techniques and tools
● Focus on efficiency, user experience, and process improvement
● Excellent analytical and time management skills
● Excellent communication and problem-solving attitude
● Familiarity with SaaS Products is a plus
● Degree from IT/Computer Science background is preferred
Job Summary:
- Willingness to work on highly scalable cloud-native solutions based on microservices.
- Quickly learn the technologies and deliver using the same.
- Take complete ownership of the customer requirements.
- Motivated to deliver world-class quality.
- Inclined to bring new ways of thinking, working and providing solutions.
- Drive the concept of quality into everybody and have a zero-tolerance towards bad quality.
- Understand requirements from product management, customer and able to comprehensively break this down to manageable tasks.
Experience:
● 3-9 years of development experience.
Technical Skills:
Mandatory:
- Java - Advanced concepts concurrency, reflection, lambda, Java Springboot, Spring security,
- Actuator/Prometheus/Grafana/Servo (metrics),
- EFK/ELK stack (log analysis)
- OpenAPI/Swagger (documentation)
- RDBMS (PostgreSQL, MySQL, Maria or any other)
- NoSQL (Anyone of Mongo DB, Redis, Cassandra, Neo4J or other DBs)
- Automated unit tests/e2e tests (JUnit, TestNG, RestAssured etc)
- CI/CD pipelines (Jenkins, Sonar, Maven/Gradle etc)
Optional: (But highly recommended)
- NewSQL DB (TiDB, CockroachDB)
- AMQP/RabbitMQ
- Kafka
- Docker
- Kubernetes









