Senior Java/ Tech Lead

Wissen Technology is hiring for Java Tech lead

Required:

• 8-10 years of industrial experience
• Java and related frameworks.
• Experience in Core Java 1.8 and above, Data Structures, OOPS, Multithreading, Microservices, Spring and Swift Payments
• Exposure on Fintech domain is mandatory
• Should have the ability to analyse, design, develop and test complex, low-latency client-facing applications.
• Good development experience with RDBMS
• Good knowledge of multi-threading and high volume server side development
• Excellent problem solving and coding skills in Java
• Strong interpersonal, communication and analytical skills.

Company Profile:

Company Name : Wissen Technology

Group of companies in India : Wissen Technology & Wissen Infotech

Work Location - Bangalore

Website : www.wissen.com

Wissen Thought leadership : https://www.wissen.com/articles/

LinkedIn: https://www.linkedin.com/company/wissen-technology

What you will be doing

● Building and maintaining micro services.

● Develop new features and improve existing features of the application.

● Coding, Implementing, Unit Testing and Documenting Typescript and Javascript based services.

● Design, build, and maintain efficient, reusable, and reliable code.

● Code reviews and ensuring adherence to software development standards.

● Contribute to team and organizational improvements in process and infrastructure.

● Participating in requirements gathering and functional specification activities.

● Resolving and helping to mitigate production issues.

Technical Overview:

● You will be expected to design, develop and maintain large-scale complex backend web applications.

● You will be expected to rapidly learn and apply relevant new technologies.

● You will be having a high level of interaction with business and product stakeholders.

● You will be working on the entire web application stack, which includes:

      o Web server hosting

      o RESTful communication

      o Message brokering

      o Backend application layer, which includes the service and domain layers

     o Data layer for persistence or caching

● You will be participating in an agile software development cycle, which includes:

     o Design

     o Development

     o Code Review

     o Unit and Integration Testing

     o Release

● As a Staff Engineer, you will be expected to contribute to design, code review, refactoring, and project management.

● You will be exposed to the following technologies:

     o Web application frameworks: Ruby on Rails, Node.js, Java Play, Vert.x, AIOHTTP, AWS Lambda

     o Languages: Ruby, Java, Kotlin, Javascript, Python

     o Data stores: PostgreSQL, Aerospike, Redis, Amazon Redshift

     o Communication: HTTP, Amazon SQS, Sidekiq, Amazon SNS

     o Server Management: Amazon ECS, Docker

Product Overview:

You will be contributing to products concerning both customers and partner drivers.

Product sectors include:

1) Growth: You’ll build tools to help boost user growth on the platform including our industry-best driver onboarding, training and certification system, referral system, and lead management models.

2) Lifecycle Management: Build tools to help users engage with the platform better, which include rewards and recognition modules, subscription services account management tools, partner and customer wallets and payout modules, and churn detection systems among others.

3) Transaction Experience: You’ll help deliver the most delightful booking experience to our customers and drivers. As part of this team, you’ll be responsible for our core booking system, pricing and payment

systems, location tracking and filtering services, fraud prevention systems, and in-app ticketing and support among others.

4) Fulfilment: As part of the fulfillment team, you’ll work on systems that ensure a high degree of ride fulfillment on the platform. Tools include allocation methodologies and systems, dynamic pricing, dynamic partner routing, and partner re-activation tools among others.

5) Enterprise Solutions: You’ll help Porter’s enterprise customers achieve delivery excellence. You’ll build tools for contract management, fleet management, fleet and route optimization tools, alerting and monitoring tools, and analytics suite among others.

Key Responsibilities: 

• Rewrite existing APIs in NodeJS. 
• Remodel the APIs into Micro services-based architecture. 
• Implement a caching layer wherever possible. 
• Optimize the API for high performance and scalability. 
• Write unit tests for API Testing.
• Automate the code testing and deployment process.

Skills Required: 

• At least 2 years of experience developing Backends using NodeJS — should be well versed with its asynchronous nature & event loop, and know its quirks and workarounds. 
• Excellent hands-on experience using MySQL or any other SQL Database. 
• Good knowledge of MongoDB or any other NoSQL Database. 
• Good knowledge of Redis, its data types, and their use cases. 
• Experience with graph-based databases like GraphQL and Neo4j. 
• Experience developing and deploying REST APIs. 
• Good knowledge of Unit Testing and available Test Frameworks. 
• Good understanding of advanced JS libraries and frameworks. 
• Experience with Web sockets, Service Workers, and Web Push Notifications. 
• Familiar with NodeJS profiling tools. 
• Proficient understanding of code versioning tools such as Git. 
• Good knowledge of creating and maintaining DevOps infrastructure on cloud platforms. 
• Should be a fast learner and a go-getter — without any fear of trying out new things Preferences. 
• Experience building a large scale social or location-based app.

• You will be having 3+ years of experience of writing optimized Code in Javascript/Typescript and working with Advanced NodeJs frameworks targeting Latest NodeJs version.
• Design, build, and maintain efficient, reusable, and reliable codes by setting expectations and features priorities throughout the development life cycle.
• Understanding of basic RDBMS using relational databases like PostgresSQL, MySQL, or MSSQL
• API development (Rest/GraphQL)
• You will participate in regular design sessions, code reviews and agile ceremonies.
• You will work closely with the Product Owner and scrum team to help deliver high quality features inside of agreed timescales
• You will Provide technical mentorship and upskilling to scrum team members and across functional boundaries where appropriate
• You will Identify areas for modification or refactoring inside our code-base and champion their improvement.
• You will lead by example, contributing to a culture of high quality, personal ownership and customer focused execution

• A minimum of 3 years experience as a Technical Lead in Java., Strong experience in design and implementation of high performing and highly scalable websites/applications
• Strong experience in Spring MVC framework and experience in design patterns, unit testing etc..
• Strong experience in AWS services such as EC2, Lambda, S3, ECS, API Gateway and using tools such as Terraform, Ansible
• Strong experience in Endeca, ATG and BCC, Solr, any Headless CMS
• Considerable experience in databases such as SQL Server/Mongo DB is an added advantage
• Good experience in JavaScript frameworks such as Angular/React/VueJS is an added advantage
• Experience in Adobe AEM is an added advantage
• Creative problem-solving skills and ability to effectively communicate and translate feedback, needs and solutions
• Excellent verbal and written communication skills required

• Provide strategic thinking and leadership pertaining in cloud technologies and building scalable websites
• Provide technical leadership and guidance internally to the team and externally to management
• Communicate effectively across all levels of the organization
• Collaborate within and across teams with strong teamwork orientation
• Help maintain a culture of high quality
• Showcasing excellent work ethic and strong sense of ownership of end result
• Understand the structured software development methodologies including design, development and testing in an Agile environment
• Follow all security practices and identify areas and processes where performance and scalability can be improved
• Make and justify recommendations for improvement., Participate in development of solutions in cases of new technology direction and/or proof of concepts
• Should translate business needs into technical solutions with Strong analytical, conceptual and technical skills
• Support the evaluation, selection, design, development and maintenance of the platforms.

Must skills:

Hands- on in the following:

• Java 8/J2EE
• Spring boot
• Gradle/Maven
• REST API
• ORM- hibernate/ JPA
• Unit Testing and Integration Testing- Junit/ TestNG

Good to have:

Hands-on in the following:

• CI/CD pipeline deployment
• Messaging- ActiveMQ/RabbitMQ/MQ
• DB2
• Kafka
• NoSQL framework exposure

• Develop creative solutions and write technical design based on the requirements.
• Work closely with peer teams to ensure that applications are written to allow for overall system performance.
• Assist in tuning and optimization.
• Develop and execute unit tests for product components.
• Perform peer code reviews and provide feedback.
• Promote high quality, scalability, and timely completion of projects.
• Apply agile approach to coordinate development and determine project scope and limitations.
• Bachelor degree in Engineering, CS or equivalent experience
• Development in Core Java, J2EE, Struts, spring, Client-Side scripting, Hibernate, Database
• Development of scalable core-java applications, Web Applications and Web Services
• OOP concepts 
• Data Structures, algorithms and their applications
• Strong problem-solving skills
• Experience in building microservices
• Strong experience with Spring Boot stack (spring cloud, spring-data)
• Extensive experience in developing and consuming REST APIs
• Experience in Kafka distributed messaging
• Hands-on experience in Redis, Apache Ignite, Hazelcast
• Strong experience in RDMS and NoSQL databases Mongo
• Experience in using Elastic Search
• Experience in profiling applications
• Strong analytical skills and general logical reasoning
• Excellent written and verbal communication skills.
• Good understanding of Software development life cycle (SDLC)
• Basic SQL queries

We are looking for Senior Backend Engineers to design and build the systems that power our core business of lending and loan processing.  As a Senior Backend Engineer you will be expected to contribute significantly to your team. Your work is consistently of high quality. You solve complex problems, applying appropriate technologies, design patterns, and best practices. Your focus is on a major portion of existing or new team software. You work with your team to design and build software that is secure, correct, observable, and resilient. Your solutions are pragmatic. You identify the proper level of complexity for a task and advise your peers and manager on technical approach.

What you’ll do

• Design, implement, and maintain developer-friendly APIs and services

• Contribute to code and architecture reviews to keep our code quality high
• Debug and resolve production issues; take part in blameless postmortems
• Plan and execute smooth migrations to new technology as a way of managing technical debt
• Build tools and automation for our business and operations teams
• Make decisions on trade offs such as: Reuse versus introducing dependencies; Extensibility versus over-engineering; and Maintainability versus time to delivery (via short-term workarounds)
• Contribute to the improvement of your team’s code review standards, design discussions, team planning, and AARs.

You may shine in this role if you

• Have a track record of shipping software in a distributed systems environment

• Are enthusiastic about collaborating across departments to solve challenging problems
• Are pragmatic about the need to release less-than-perfect software and continuously iterate on it
• Can identify and articulate trade-offs in software and data design
• Can communicate both technical and business requirements fluently
• Are excited about both learning new things and teaching others

We speak mainly in javascript and golang, though we are open to engineers with different backgrounds and languages