
Principal Software Engineer - Java
at Its a TOP Product Company !!!
REQUIRED SKILLS:
- 8+ years experience in web application development and architecture.
- ·Extensive experience using open source software libraries
- Strong experience in at least one MVC architecture or application of the pattern
- Solid hands on experience with Java
- Strong experience with SQL ( Oracle, MySQL, Postgres)
- Strong experience in Data Structures & Algorithms
- ·Must have built end to end continuous integration and deployment infrastructure for micro services
- Strong commitment to good engineering discipline and process including code reviews and delivering unit tests in conjunction with feature delivery
- Must possess excellent communication and teamwork skills. Strong presentation and facilitation skills are required.
- Self-starter that is results focused with the ability to work independently and in teams.
GOOD TO HAVE:
- Prior experience building modular, common and scalable services
- Experience using chef, puppet or other deployment automation tools
- Experience working within a distributed engineering team including offshore
- Bonus points if you have contributed to an open source project
- Familiarity and experience with agile (scrum) development process
- Proven track record of identifying and championing new technologies that enhance the end-user experience, software quality, and developer productivity

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📍 Position : Java Architect
📅 Experience : 10 to 15 Years
🧑💼 Open Positions : 3+
📍 Work Location : Bangalore, Pune, Chennai
💼 Work Mode : Hybrid
📅 Notice Period : Immediate joiners preferred; up to 1 month maximum
🔧 Core Responsibilities :
- Lead architecture design and development for scalable enterprise-level applications.
- Own and manage all aspects of technical development and delivery.
- Define and enforce best coding practices, architectural guidelines, and development standards.
- Plan and estimate the end-to-end technical scope of projects.
- Conduct code reviews, ensure CI/CD, and implement TDD/BDD methodologies.
- Mentor and lead individual contributors and small development teams.
- Collaborate with cross-functional teams, including DevOps, Product, and QA.
- Engage in high-level and low-level design (HLD/LLD), solutioning, and cloud-native transformations.
🛠️ Required Technical Skills :
- Strong hands-on expertise in Java, Spring Boot, Microservices architecture
- Experience with Kafka or similar messaging/event streaming platforms
- Proficiency in cloud platforms – AWS and Azure (must-have)
- Exposure to frontend technologies (nice-to-have)
- Solid understanding of HLD, system architecture, and design patterns
- Good grasp of DevOps concepts, Docker, Kubernetes, and Infrastructure as Code (IaC)
- Agile/Lean development, Pair Programming, and Continuous Integration practices
- Polyglot mindset is a plus (Scala, Golang, Python, etc.)
🚀 Ideal Candidate Profile :
- Currently working in a product-based environment
- Already functioning as an Architect or Principal Engineer
- Proven track record as an Individual Contributor (IC)
- Strong engineering fundamentals with a passion for scalable software systems
- No compromise on code quality, craftsmanship, and best practices
🧪 Interview Process :
- Round 1: Technical pairing round
- Rounds 2 & 3: Technical rounds with panel (code pairing + architecture)
- Final Round: HR and offer discussion
Experience: 3 to 5
Location: Bangalore
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 to 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.
About Us:
At Wissen Technology, we deliver niche, custom-built products that solve complex business challenges across industries worldwide.
Founded in 2015, our core philosophy is built around a strong product engineering mindset—ensuring every solution is architected and delivered right the first time. Our commitment to excellence translates into delivering 2X impact compared to traditional service providers. How do we achieve this? Through a combination of deep domain knowledge, cutting-edge technology expertise, and a relentless focus on quality.
We don’t just meet expectations—we exceed them by ensuring faster time-to-market, reduced rework, and greater alignment with client objectives. We have a proven track record of building mission-critical systems across industries, including financial services, healthcare, retail, manufacturing, and more.
Wissen stands apart through its unique delivery models. Our outcome-based projects ensure predictable costs and timelines, while our agile pods provide clients the flexibility to adapt to their evolving business needs. Whether it’s AI/ML for unstructured data processing, cloud enablement, or data engineering, Wissen leverages its thought leadership and technology prowess to drive superior business outcomes. Our success is powered by top-tier talent. Our proprietary Interview Ninja platform ensures we hire the best, building high-performing teams that deliver unmatched results.
Today, Wissen Technology has a global footprint with 2200+ employees across offices in the US, UK, UAE, India, and Australia. Our mission is clear: to be the partner of choice for building world-class custom products that deliver exceptional impact—the first time, every time.
Website : www.wissen.com
We are seeking extremely smart programmers who are gung ho about building large scale systems that are going to have a big impact on millions of customers.
Responsibilities:
- Design and develop products by working closely with business team.
- Gain experience with hands on coding and independent ownership of software components.
- Build performant, scalable, enterprise ready back end architectures that can support millions of users in parallel.
- Follow strong engineering best practices and champion their adoption.
Requirements:
- 2+ years’ experience in software product development and delivery.
- Bachelors or Masters degree in engineering from a reputed institute(preferably IITs, NITs, or other top engineering institutes).
- Strong grasp of CS fundamentals, algorithms and excellent problem solving abilities.
- All experience should be from good product development or e-commerce background.
- Must have shown good stability in all your previous associations.
- Have strong backend knowledge and cloud development exposure.
- Expert at Java, Spring boot, Hibernate, REST API development.
- Worked with at least 1 RDBMS (Mysql preferred). NoSql is a plus.
- Have used or are very hands-on with Microservices, Docker, Kubernetes, Gradle/Ant, Kafka, GIT/bitbucket in a very agile work place.
- Writing high quality code which is made better by unit tests and integration tests is how you work.
- Comfortable with exploring proven open source tech stack like Grafana, Kibana, Jira, Prometheus, caches like Redis/Memcached, task queues like celery, to name a few.
- Knowledge of test driven development and AWS tech stack will be a good plus.
Required Skills:
• 4+years of software development experience
• Good grasp on programming fundamentals including OOP, Design Patterns, Data Structures, Networking and OS Concepts
• Excellent coding skills (We prefer java).
• Flexible to work on any technology. Should be able to pick-up new technologies fast.
• Expertise in any programming language
• Good knowledge of relational databases and writing complex queries
• Good knowledge of web 2.0 technologies
• Knowledge of distributed systems, Multi-threading, network programming.
• Exhibit passion and enthusiasm for building and maintaining large scale platforms.
• Passionate about automated testing, good design, performance and scalability.
• Able to solve complex algorithms
• Excellent analytical, logical and problem-solving skills
A Fintech start up company that bridges the gap between the digital payments
and the micro-retailing industry of the market. A nexus for the B2B sector providing multi-utility services via an Android app, enabling the micro-retailers across India to revolutionize their business and thus providing them with an opportunity to generate more revenue by offering multiple micropayment and digital services at their offline store. We intend to leverage the mode of smartphone technology in the rural and urban markets across India, thus empowering micro-retailers and creating a sustainable self-employment for this segment.
Overall Competencies:
1. Tech Depth/Breadth/Problem Solving.
2. Design & Architecture (Code/Design review).
3. Team Management.
Leadership Competency:
- Managing & mentoring a team.
- Ability to deliver projects/sprints on time.
- Obsessed with quality: Design reviews, code reviews, testing (system/performance).
- Spending at least 50% time with hands-on coding while doing the above Programming.
Tech Competency:
- Hands-on with Python/Django/Flask.
- Knowledge of PHP & Laravel is a plus.
- Experience with any JavaScript framework (Angular / React ).
- Prior experience in micro-services based architecture.
- Good understanding of SQL (MySQL, Postgres, or similar).
- Good understanding of one no-SQL (MongoDB / DynamoDB etc).
- Comfortable producing and refactoring code without assistance.
- Can reason about the complexity of algorithms (time and space).
- Basic CI/CD and DevOps.
- Experience in Docker & Kubernetes.
- Design, QA, and Infrastructure.
- Knowledge of design patterns and cloud scaling.
- AWS & GCP experience. AWS is mandatory.
- Understands BDD/TDD/Performance/Security/Smoke testing/Unit Testing
- Understands REST principles and Microservices
- Understands version control & branching strategies
- Understands application security fundamentals and potential security risks
Education: Bachelors in Computer Science|
- Optimizing components for maximum performance across a vast array of web-capable devices and browsers
- Ability to understand business requirements and translate them into technical requirements
- You will ensure that these components and the overall application are robust and easy to maintain.
- Have a good understanding of design and user experience principles.
- Open-minded, flexible, and willing to adapt to changing situations
- Ability to work independently as well as on a team and learn from colleagues
- High adaptability in a dynamic start-up environment
- Ensuring technologies are used efficiently, profitably, and securely. Evaluating and implementing new systems and infrastructure.
- Excellent troubleshooting, analytical and problem-solving abilities with a tenacious commitment to finding the root cause of issues.
Qualifications :
- B. Tech/ B.E. /M. Tech/ BCA / MCA or a related technical discipline from reputed universities
Skills Required :
- Minimum 2+ years of experience in REST API development using python.
- Must have experience with anyone popular python frameworks like Django, Flask, and FastAPI Framework.
- Experience in designing and developing Restful Web services and Remote procedure calls.
- Able to integrate multiple data sources and databases into one system
- Knowledge of load testing and optimizing code for performance, security, and scalability
- Experience with Unit testing frameworks in Python
- Knowledge of modern authorization & authentication mechanisms.
- Able to create database schemes that represent and support business processes
- Knowledge of Version Control System & basics of CI/CD
- Write and maintain technical documentation
- Solid foundation in OOPS, Data structures, and Algorithms
- Knowledge of SDLC phases of project development.
- Experience in one or more No SQL Databases such as MongoDB, and Cassandra.
- Experience with event-based databases and programming
- Good experience in synchronous programming and thread-based programming.
- Experience with schedulers.
- Good to have knowledge of Linux shell commands.
- Good to have experience in Kubernetes & Docker
- Knowledge of any Cloud Service like GCP or AWS would be an added advantage
- Cares deeply about writing Quality, Testable & Modular code
- Good to have an understanding of NLP.
- Ability to write APIs including Restful APIs.
- Able to consume 3rd party API's
- Familiarity with SQL (MySQL, POSTGRESQL) and NoSQL(MongoDB) databases designing, query optimization techniques and their declarative query languages.
- Creating database schemas that represent and support business processes.
- User authentication and authorization between multiple systems, servers, and environments.
- Experience in Micro-services development will be an added advantage.
- Composer / NPM / Webpack.
- Laravel forge server deployment and management
- Laravel Dusk Testing
- PHP Unit Testing
- Good command of problem-solving and analytical skills.
- Must be technically strong in logical thinking
Addon Front-End Frameworks knowledge:
- Other Front-end frameworks like as Vue.js (Vue CLI, Vuex, Vue Router, and Nuxt.js).
- Proficiency in JavaScript and TypeScript programming.
- Aware about JavaScript basics and Modern JavaScript (ES6 – ES7 – ES8)
- Understanding of server-side rendering and its benefits and use cases
- Working knowledge of npm or Yarn
- Knowledge of Bootstrap, Framework 7
- Working knowledge of HTML5 code template and CSS3 styling (Sass or Less depending on your technology stack)
Addon Server knowledge will be added advantage:
- Proficient understanding of code versioning tools, such as GitHub, GitLab
- Working knowledge of cloud servers (AWS) related services and server administration like setting up
Apache/Nginx, php-fpm etc.. (Nice to have but not mandatory).
- Experience working with Docker (Nice to have but not mandatory)
- Experience with CI/CD tools and processes(Nice to have but not mandatory)
• Work with product team to understand product vision and requirements
• Solve complex technical problems and perform the code reviews for junior team members.
• Produce deliverables at a consistently high rate and with consistently excellent quality
• Work with a team of engineering professionals to ensure the highest quality product delivery
As a member of our team, you will be responsible for insuring the successful launch of many product features.
Key responsibilities
• Work in a product based R&D team and collaborate with other teams to integrate.
• Write code that is of high quality and consistent with our coding standards
• Analyze highly complex business requirements, break the requirements to multiple applications; generate technical
specifications to design or redesign complex software components and applications
• Maintain best practices for development/code changes as needed
• Design and architect software applications
• Conducting code reviews and enforcing the quality standards
• Conducting the daily SCRUM meetings and removing the roadblocks
• Performance testing and tuning for scalability
• Develop quick proof of concepts to set the technical direction for rest of the team.
• Work with Devops and Automation team to develop automation strategy for your application.
Requirements
• Bachelor’s Degree (Masters preferred) in Computer Science or related field
• 3+ years of software development experience on web applications
• Experience in working in an onsite and offshore development model
• Must have hands-on design and development experience in Cloud (GCP/AWS/Azure), Kubernetes, Microservices,
Java, J2EE, Spring/Boot, Hibernate, JUnit and Integration with front end via rest interfaces.
• Must have Hands-on experience in Multi-threading, Non-blocking IO, Kafka, JMS
• Strong integration background required. Experience with Microservices, REST, JSON and APIs is required
• Experience with as many of the following is highly desirable: Tomcat, Node.js, XML, XSLT, XPath, Web Services,
MongoDB, MYSQL, and query performance tuning
• Experience with code management and continuous integration techniques and tools such as Maven, Gradle, Github,
JMeter, Jenkins, NPM etc. is highly desirable
• Experience building complex software systems that have been successfully delivered to customers
• Strong Computer Science fundamentals and working knowledge in data structures, algorithms, problem-solving and
complexity analysis
• Knowledge of professional software engineering practices and best practices for the full software development life
cycle (SDLC), including coding standards, code reviews, source control management, build processes, testing, and
operations
• Proven ability to troubleshoot issues in production including root cause analysis
• Self-directed and capable of working effectively in a highly innovative and fast-paced environment
• Experience with Agile software development in a UNIX/Linux environment
• Experience with system architecture/design
Qualifications
• Passionate about technology and technical challenges of all types excite you
• Eagerness to learn and learn fast, enjoy working in a fast-paced environment
• Ability to develop detailed design and deliver a scalable implementation.
• Mentor developers in analysis, design, coding and unit testing techniques
• Motivated self-starter and team player; you inspire others to achieve great things
• Driven to provide the best customer experience via technology
• Supply chain industry experience is preferred
• Proven ability to work effectively in a cross-functional team
• Strong problem solving and troubleshooting skills with the ability to come up with creative solutions for different
problems
• Strong written/spoken communication skills
• Experience with distributed systems operating in a scalable/high volume environment
• Ability to drive innovation
If you love to work in a fast-paced startup environment and desire to solve some very
challenging problems using technology, we want to hear from you.
We are looking for an enthusiastic and energetic individual to work as a Senior Software
Developer. You will be involved in working on multiple products for the scaling and growth
stage of the lifecycle.
We work closely with the real world,. If you are interested to grow and learn in your career
and at the same time work on products for the 1Bn user market, we encourage you to apply.
Responsibilities
● Managing and guiding a team of junior developers for timely delivery of product and
milestones
● Optimization of the application for maximum speed and scalability
● Implementation of security and data protection
● Design and implementation of data storage solutions
● Design & Build: Designing and developing high-volume, low-latency applications for
mission-critical systems, and delivering high-availability and performance.
● Collaborate - Collaborating within your product streams and team to bring best
practices and leverage a world-class tech stack.
● Measurable Outcome - You will need to set quantifiable objectives that encapsulate
the quality attributes of a system. The fitness of the application is measured against
set marks.
● DevOps - You will need to set up every essential (tracking/alerting) to make sure the
infrastructure/software you built is working as expected.
● Design and development of our REST APIs
● Help maintain code quality, architecture, and automation
Required Knowledge and Skills
● Over 3 years of experience working in backend development technologies and
DevOps
● Highly curious and ready to dive into complex technical challenges.
● Proficiency in development and scripting in Python, Django/Flask framework.
● Some experience in Angular 6+, JavaScript or TypeScript would be a plus.
● Database design and management, including being up on the latest practices -
bonus points for MySQL and MongoDB
● User authentication and authorization between multiple systems, servers, and
environments
● Integration of multiple data sources and databases into one system
● Management of hosting environment, including database administration and scaling
an application to support load changes
● Setup and administration of backups
● Understanding differences between multiple delivery platforms such as mobile vs
desktop, and optimizing output to match the specific platform
● Creating database schemas that represent and support business processes
● Implementing automated testing platforms and unit tests
● Understanding of “session management” in a distributed server environment
● Server management and deployment for the relevant environment
● Appreciation for clean and well-documented code
● Hands-on experience with architecture and structural design patterns
● Expertise in designing, developing, deploying, and integrating RESTful APIs
● Ability to understand business requirements and translate them into technical
requirements
● A knack for benchmarking and optimization
● Proficient understanding of code versioning tools, such as Git
Personality
● Requires excellent communication skills – written, verbal, and presentation.
● You should be a team player.
● You should be positive towards problem-solving, have a very structural thought
process to solve problems
● Interest to work in a high paced start-up environment with a large amount of learning.
● Good understanding of different frameworks, and be able to pick up new
technologies at ease.
● You should be agile enough to figure out a need for new technologies/frameworks
and learn new technology for better product performance.










