Java Developer

JOB DESCRIPTION:

• 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:

• 4– 12 years of strong hands-on experience in Core Java.
• 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.

Why Join Wissen Technology?

• Be a part of a high-growth organization that has expanded 400% in the last five years.
• Work alongside leadership and engineers from IITs, IIMs, MIT, Wharton, and other top institutions.
• Engage with Fortune 500 clients and deliver high-impact projects.
• Certified as a Great Place to Work®.
• Recognized as a Top 20 AI/ML Vendor by CIO Insider (2020).
• Work on next-gen technologies: AI/ML, Big Data, Cloud, DevOps, RPA, and more.
• Global presence across US, India, UK, Australia, Mexico, and Canada.

Website : www.wissen.com 

As a Backend Engineer you will be responsible for creating REST APIs which are used to drive the User Interface. Given the nature of the application, these APIs need to be very efficient and high performing. This requires optimizing queries for faster execution and introducing database changes that may be required. We are looking for individuals with great attention to detail, who are genuine, confident, committed and not only passionate about technology, but excited to work in a fun and friendly start-up environment. The ideal candidate will be passionate about technology and GETTING IT DONE.

Responsibilities:

• Develop, test, implement and maintain application software
• Take part in software and architectural development activities
• Debug application issues and helping support respond to client queries
• Participate in application development meetings
• Provide accurate estimates, clearly communicate status of tasks and identification of risks
• Commitment to accomplishing the task at hand and identify the fastest and most reliable way to solve a problem
• Performance tuning of application code at different service levels
• Interact with customers of the application and help address issues reported

Requirements:

• Bachelor's degree in Computer Science or equivalent
• 3+ years of experience with Java and Spring frameworks.
• Having good knowledge in a scripting language like python is a plus
• Experience with Spring and Hibernate/ ORM
• Understanding of relational database and normal forms
• Understanding of NoSQL / RDBMS (Mongo or Postgres) and ability to write optimized and high performing queries
• Strong understanding of Java concurrency, concurrency patterns, experience building thread safe code
• Experience building RESTful web services
• Strong written and verbal communication skills
• Strong interpersonal skills and time management skills
• Strong problem solving and analytical skills
• Experience with GIT as a VCS, Unix based systems
• Experience with NoSQL Database is a plus
• Following are a set of 'good to have' skills React AWS Bitbucket, JIRA

About - The company is an online discovery platform that offers direct-to-home product trials for D2C brands.

Location- Bangalore

Series- B

Responsibilities

• Lead simultaneous development for multiple business verticals.Design & develop highly scalable, reliable, secure, and fault-tolerant systems.Ensure that exceptional standards are maintained in all aspects of engineering.Collaborate with other engineering teams to learn and share best practices.Take ownership of technical performance metrics and strive actively to improve them.Mentors junior members of the team and contributes to code reviews.

Requirements

• A passion to solve tough engineering/data challenges.Be well versed with cloud computing platforms AWS/GCPExperience with SQL technologies (MySQL,PostgreSQL)Experience working with NoSQL technologies (MongoDB,ElasticSearch)Excellent Programming skills in Python/Java/GoLangBig Data streaming services (Kinesis ,Kafka ,RabbitMQ)Distributed cache systems (Redis ,Memcache)Advanced data solutions (BigQuery, RedShift, DynamoDB, Cassandra)Automated testing frameworks and CI/CD pipelinesInfrastructure orchestration(Docker/Kubernetes/Nginx)Cloud-native tech like Lambda,ASG,CDN,ELB,SNS/SQS,S3 Route53 SES

• Design, build and maintain efficient, reusable, and reliable Java code. 
• Providing technical oversight to the team, involved in design and code review.
• You would also be spending most of the time in development activities in varied technologies and should have a passion to write code.
• Should be able to create good technical documents.
• Translate application storyboards and use cases into functional applications.
• Ensure the best possible performance, quality, and responsiveness of the applications.
• Identify bottlenecks and bugs, and devise solutions to these problems - Help maintain code quality, organization, and automatization. 
• Prepare the technical design of complex technology components as well as suggest the pros and cons of using a certain technology stack or component or design pattern versus another, to the clients.
• Team Management.

• Qualifications: BTECH/MTECH/MCA/MSc.
• Proficient in Java, with a good knowledge of its ecosystems with a knack for writing clean, readable Java code, writing reusable Java libraries along with knowledge of multithreading, concurrency patterns, and collections in Java. 
• Solid understanding of object-oriented programming along with various design and architectural patterns.
• Hands on experience with JMS, JPA, Spring (MVC, Boot & Cloud preferred) & Hibernate.
• Familiarity with concepts of MVC, JDBC, and RESTful.  Experience with Presentation Layer (JSP/Servlets), JS Frameworks (Angular, jQuery, react, etc.).
• Creating database schemas that represent and support business processes and experience with both external and embedded databases. Implementing automated testing platforms and unit tests.
• Proficient understanding of code versioning tools, such as Git, Ant, Maven, and Gradle; continuous integration.
• Knowledge in xml based mappings, SAML, rest clients, CAS authentication and Jetty.
• Knowledge of Apache Camel and Kafka and Drools Rule Engine is preferred.

• 5+ years of non-internship professional software development experience
• 1+ years of exposure to the architecture and design (design patterns, security, reliability and scaling) of new and current systems.
• Bachelors/Masters degree in computer science or other related fields
• Programming experience with at least one modern language such as Java or Python including object-oriented design
• A solid foundation in computer science, with strong competencies in data structures, algorithms, and software design.
• Proven ability to take initiative and dive into new areas of technology.
• Passion for learning, analysing technology trade-offs and shipping products.
• Knowledge on SQL, NOSQL databases and AWS deployments is a plus
• Strong sense of ownership, urgency and drive
• Ability to work well with people and be both highly self motivated and motivating
• Must be independent and comfortable in a fast paced, ambiguous and often multi-directional work environment

• You will build cutting-edge secure and scalable systems by writing simple and efficient code.
• You will push your design and architecture limits for new product development.
• You will be the owner of your feature and work directly with product teams to drive customer impact.
• You will ensure that the systems you oversee are secure, fault-tolerant and are performing reliably at high volumes.
• Constantly look at possibilities to improve the overall functioning of the product.
• You possess a strong desire to learn and contribute solutions and ideas to a broad team
• You are independent and comfortable in a fast paced, ambiguous and often multi-directional work environments
• You will manage multiple tasks and use sound judgment when prioritizing
• You can collaborate with globally-located cross functional team in building customer-centric products
• You will analyze existing software implementations to identify areas of improvement and provide estimates for implementing new features

• Full stack experience is a plus
• Understanding of complete SDLC and Agile methodologies
• Domain expertise in Financial Services, Banking or Payments
• Code Quality –Code Hygiene (Coverage, Complexity, Usability)
• Collaboration –Strong peer review standards

You Will:

• Lead, coach and mentor a team of 8-10 engineers so they all learn, grow, and succeed.
• Plan and prioritize work for your team, including collaborating with cross border teams.
• Provide oversight and accountability for technical decisions.
• Create an inclusive environment that attracts and retains high-performing engineers.
• You will collaborate with Developers, Program Managers, QA and Devops Engineers in an agile development environment.
• Constantly learn and grow as an engineer and an engineering leader.
• Demonstrate a passion for customers and technology.


You must have:

• Experience in the design, development, and deployment of large-scale enterprise applications with multiple tiers
• Exposure on agile test-driven development for robustness, usability, reliability, security and performance.
• Strong technical aptitude for any programming language, preferred, Core JAVA and Spring Boot and other Spring libraries, Eureka, Hystrix etc.
• Experience of creating architecture or developing web services using Open source technologies and to integrate applications with databases such as Oracle, MySQL, MongoDB, or Cassandra
• Solid understanding of OOPS, algorithms and data structures.
• Experience on Kafka / Scala / Storm / Elastic Search and Web Services like RESTful.
• Experience in building highly scalable distributed systems
• Extensive experience with version control systems (Git is preferred) and issue tracking systems (JIRA is preferred)

Big Pluses if you:

• Have a strong focus on business outcomes
• Are comfortable with collaboration, open communication and reaching across functional borders
• Are self-motivated and can get things done
• Have the ability to communicate and defend your ideas clearly
• Have a strong knowledge of threading, concurrency, scaling, and high availability.
• Have a desire to build products that users love

• Stay current with new and evolving technologies via formal training and self-directed education