Senior Software Engineer

Job Title: Java Developer

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 to 14 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 clientfacing 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.

Position Overview

We are seeking a skilled Developer to join our engineering team. The ideal candidate will have strong expertise in Java and Python ecosystems, with hands-on experience in modern web technologies, messaging systems, and cloud-native development using Kubernetes.

Key Responsibilities

• Design, develop, and maintain scalable applications using Java and Spring Boot framework
• Build robust web services and APIs using Python and Flask framework
• Implement event-driven architectures using NATS messaging server
• Deploy, manage, and optimize applications in Kubernetes environments
• Develop microservices following best practices and design patterns
• Collaborate with cross-functional teams to deliver high-quality software solutions
• Write clean, maintainable code with comprehensive documentation
• Participate in code reviews and contribute to technical architecture decisions
• Troubleshoot and optimize application performance in containerized environments
• Implement CI/CD pipelines and follow DevOps best practices
•  
• Required Qualifications
• Bachelor's degree in Computer Science, Information Technology, or related field
• 4+ years of experience in software development
• Strong proficiency in Java with deep understanding of web technology stack
• Hands-on experience developing applications with Spring Boot framework
• Solid understanding of Python programming language with practical Flask framework experience
• Working knowledge of NATS server for messaging and streaming data
• Experience deploying and managing applications in Kubernetes
• Understanding of microservices architecture and RESTful API design
• Familiarity with containerization technologies (Docker)
• Experience with version control systems (Git)
•  
• Skills & Competencies
• Skills Java (Spring Boot, Spring Cloud, Spring Security)
•  
• Python (Flask, SQL Alchemy, REST APIs)
• NATS messaging patterns (pub/sub, request/reply, queue groups)
• Kubernetes (deployments, services, ingress, ConfigMaps, Secrets)
• Web technologies (HTTP, REST, WebSocket, gRPC)
• Container orchestration and management
• Soft Skills Problem-solving and analytical thinking
• Strong communication and collaboration
• Self-motivated with ability to work independently
• Attention to detail and code quality
• Continuous learning mindset
• Team player with mentoring capabilities

About the role:

You will own a functional area - from product conception to its delivery to customers. You are expected to design and code independently in multiple tech components related to your functional area. You must also develop a deep understanding of non-functional requirements, such as reliability and availability, scale, horizontal scalability, etc. over time to make tech stack decisions accordingly. You are expected to actively mentor junior engineers. You own

the codebase quality.

We are looking for seasoned engineers who are quality-conscious, product thinkers, business cognizant and smart. Engineers get to significantly amplify the impact of their work or creations with scale. The scale also demands that engineers to produce super-efficient solutions.

What you’ll do

• Strong experience with Java 8, Spring and Spring Boot, Spring MVC, Spring Data,
• Working experience in Microservices
• Version Control: Git
• Strong understanding of functional/reactive programming, OOP, design
• Experience with Docker and Kubernetes.
• SDLC: Working experience in Agile methodology
• Strong interpersonal skills and time management skills

What you’ll need

• B.Tech or M.Tech equivalent with at least 3 years of experience
• Deep expertise in at least one programming language & tech stack.
• Strong object-oriented design skills, ability to apply design patterns, and an uncanny ability to design intuitive module and class-level interfaces
• Experience in building data-driven web application design and development is a plus
• Good understanding of multiple tech solutions and ability to pick the correct one for the given situation
• Prior work experience in an agile environment or continuous integration and continuous delivery (CI or CD)
• Ability and experience in designing high-level software designs of the scalable system, taking NFR (non-functional requirement) into consideration

It is India’s only B2B Construction Materials Supply Chain Company. Construction & Infrastructure is  one of the industries, with the most complex problems in Supply Chain and we are fundamentally reengineering the  way construction materials get procured. Our Clients include the biggest names in India & the World– The  LafargeHolcim Group, JSW Group, The Tatas and many others. We are backed by some of the world’s top marquee  funds in our journey to create transparency and standardization to an otherwise opaque industry. 

Your responsibilities: 

• Understand the business context and build high quality code using proven design patterns Develop, test and deploy integrations required to meet business requirements 
• Carry out unit tests and other quality control mechanisms to inform and validate the code and design 
• Utilizing and monitoring cloud infrastructure resources (such as AWS, Azure) efficiently 
• Participate in a highly fluid environment applying agile software development principles 
• Ensure the coding standards are on-par with the best in the industry 

Educational Qualifications: 

• Bachelor's or Master’s degree in a quantitative field (e.g. Mathematics, Engineering, Computer Science).  

Must have skills: 

• 3+ years of work experience with mobile/web development 
• Experience in working with either of languages: Go, Java, Scala 
• Strong understanding of relational and non-relational databases (MySQL, PostgreSQL, MongoDB, Cassandra) 
• Strong understanding of Message brokers 
• Must have hands on experience in Restful APIs 
• Must have a strong foundation of Data structures and Algorithms 
• Using logic and reasoning to identify the strengths and weaknesses of alternative solutions, conclusions or approaches to problems 
• Ability to deploy features on a daily basis: should be good at time management and prioritization 
• Hands-on experience in CI/CD principles and TDD 
• Strong written and verbal English communication skills 

Good to have skills: 

• Experience in event-driven & asynchronous I/O frameworks 
• Exposure to business process and workflow automation 
• Working experience in process driven and data intensive business applications 
• Experience in working on web infrastructure with React.js and React Native 

Professional traits: 

• Self-motivated, persistent and “Never Give Up” attitude 
• Passion for innovation and adaptability to a lean startup culture 
• Ability to work with minimal supervision, independently and / or as a member of a team 
• Giving full attention to what other people are saying, taking time to understand the points being made,  asking questions as appropriate

1. 2+ years of experience building REST APIs with Java
2. 1+ years of experience in maintaining REST APIs documentation.
3. 2+ years of experience programming and delivering in a production environment
4. Expertise working with data structures and algorithms
5. Proficiency in object-oriented programming and experience applying modern design patterns.

Who we are

ixigo is an AI-based travel app that helps millions of users plan and book their trips every day. Launched in 2007, ixigo is proud to have built numerous industry-first AI-innovations over the last decade. With pre-emptive help from ixigo at every touch-point of their journey, 150 million Indians are now making smarter travel decisions every year. ixigo uses Artificial Intelligence for deal discovery, personalized recommendations, dynamic marketing, airfare predictions, train delay information, PNR confirmation status, infrastructure cost optimization, business intelligence and providing fully-automated customer service over chat and voice. This makes ixigo a lean, tech-intensive and capital-efficient travel business, serving millions of travelers with a team size of under 200. Founded in 2007 by Aloke Bajpai & Rajnish Kumar, ixigo’s investors include Sequoia Capital India, Fosun RZ Capital, SAIF Partners, MakeMyTrip & Micromax.

Role & Responsibility

As a Backend Developer, You will be involved in all aspects of development playing a critical role in the design, planning, development, and deployment and help develop best practices for future development. You will be working closely with Tech, Design and Quality team to build and launch the product.

• Code, develop, design and architect features related to the existing application. We expect you to own modules end to end and take pride in the work products you ship
• Design, implement and maintain highly scalable, multi-tier, distributed server software applications
• Deliver across the entire app life cycle, design, build, deploy, test, release to app stores and support
• Working directly with developers and product managers to conceptualize, build, test and release products
• Take responsibility for performance and stability for all server functions
• Continuously discover, evaluate, and implement new technologies to maximize development efficiency

Skills & Qualifications:

• At least an undergraduate degree in Computer Science, Engineering, preferably from IITs/Top RECs
• 2-5 years of experience at cutting edge organizations or startups
• Extensive experience in a Java server-side software design and development
• Proficiency in the implementation of algorithms and the use of advanced data structures to solve problems in computing.
• Experience with e-business/e-commerce applications and business environment is a must
• Any experience with internet companies or the travel industry will be a plus

Must have

• Good understanding of Java/J2EE and design patterns
• Strong knowledge of data structures and designing for performance, scalability and availability Knowledge in MongoDB and Web services
• Extensive use of Instruments and Shark to detect memory leaks and for performance optimization
• Good grasp of algorithms, memory management, and multithreaded programming
• Good to have - Python, NodeJS, Mysql, Redis, ElasticSearchGreat people skills!
• Able to fit in well within an informal startup environment and to provide hands-on management
• The high energy level and untiring commitment to drive oneself & the team towards goals

Compensation: Commensurate to skills & experience; comparable to the best in the industry.

Culture: ixigo is proud to have built an entrepreneurial culture that has become a folk-lore in the startup ecosystem. One in every four ixigems has gone on to build successful startups and companies. Our cultural values of integrity, empathy, ingenuity, awesomeness, and resilience have stood the tests of time and we’ve built a fun, flexible and creative work environment that is driven by people with a high degree of ownership. You will get to work with some of the smartest folks in the Indian startup ecosystem, and solve some of the toughest problems for the next billion users by using bleeding-edge technologies. Oh, and we have an awesome “play” area, great chai/coffee, free lunches (yes, they exist!) and a workspace you will fall in love with.

Today, MoEngage is an industry pioneer in the space and engages more than 350M devices. This includes approximately 40B events tracked per month, 30B+ messages sent, to millions of users across the globe.

As part of the Engineering team at MoEngage, here are some things you can expect:

• Take ownership and be responsible for what you build - no micro management
• Work with A players (some of the best talent in the country), and expedite your learning curve and career growth
• Make in India and build for the world at scale of 350M active users, which no other internet company in the country has seen
• Learn together from different teams on how they scale to millions of users and billions of messages. 
• Explore the latest in topics like Data Pipeline, MongoDB, ElasticSearch, Kafka, Spark, Samza and share with the team and more importantly have fun while you work on scaling MoEngage.

Skills required:

- Minimum 2 year experience in Android Development

- Good understanding of Java Programming language

    - OOPs concepts

    - Multi-threading

- Good understanding of Android Framework

    - Framework Components

    - Data Storage/Persistence

    - Offline support for application

    - Rest APIs

Good to Have:

- Knowledge and understanding of Kotlin

- Experience in building dynamic UI

- Knowledge of hybrid frameworks like React-Native/Cordova/Xamarin/Flutter, etc.