Java Developer

• Experience creating REST APIs, Supervisor, Horizon, Queue, Different File and Storage Systems, Migrations, Commands
• Expertise in MySQL
• Expert in JavaScript/jQuery
• Leverage the inbuilt React toolkit for creating frontend features
• Experience with implementation of authentication, authorization, redux, context, memos, pure components

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.

Job Requirements :

- Should have experience in supporting the application and infrastructure 24x7.

- Should have good working knowledge on troubleshooting skills of Operating Systems (Linux/Windows)

- Good experience on Java/j2EE application supporting and AWS infra supporting.

- Ability to work with 3rd parties/FOPS and provide required instruction to troubleshoot and restore faults.

- Respond quickly and effectively to production issues, troubleshooting solutions, and
taking responsibility for seeing those solutions through resolution.

- Identify root cause and corrective actions for highly complex availability, capacity, security, performance, and quality issues affecting the database.

- Strong knowledge of Linux/Unix operating system.

- Good knowledge of scripting languages like Shell, Python.

- Good Knowledge of Databases like Mongo, Mysql, SQL Server.

- Respond to alerts and take corrective action to ensure the high availability of our
production environments and participate in an after-hours on-call rotation.

- Experience/Knowledge of other cloud platforms (Azure, Google Cloud) is a plus

- Strong verbal and written communications skills are a must

- Must have production support experience as the requirement is 24X7X365 production support.

Job Description

We are looking for a great Java Developer who is passionate about working in the Microsoft tech stack using Java. Your primary focus will be on developing common reusable components and implementing them following well-known best practices. You will ensure that these components and the overall application are robust and easy to maintain. You will coordinate with the rest of the team working on different layers of the infrastructure. Thus, a commitment to collaborative problem solving and an attitude to learn is essential. 

Job Responsibilities: 

• Designing and developing high-volume, low-latency applications for mission-critical systems and delivering high-availability and performance.
• Contribute in all phases of the development lifecycle.
• Write well designed, testable, efficient code.
• Prepare and produce releases of software components.
• Support continuous improvement by investigating alternatives and technologies and presenting these for architectural review.
• Design and develop dockerised microservices for cloud 

Required skills and experience include:

• BS in Computer Science or other field of study and applicable work experience.
• Most likely 3-5 years of experience on Java Web Development.
• Experience in developing Microservices for cloud (Azure/AWS/GCP) is preferred
• Experience in Spring Framework (Spring boot, spring Batch), Spring MVC, Microservice model, RESTful web services
• Experience in databases like SQL Server, Oracle, PostgreSQL, MySQL, MongoDB is desired.
• Should have hands-on experience on Hibernate, JPA or MyBatis or any other persistence framework.
• Must have strong teamwork orientation and the ability to foster collaboration within and across teams 
• Knowledge of Maven/gradle
• Knowledge of Docker, Kubernetes 
• Good Communication skills ( English)

Primary Skills(Mandatory)

Core and Advanace Java 1.8 , Web and Microservice development using java (Jsp, Servlet, Spring boot, Spring MVC), Restful Web Services, Spring framework, RDBMS (Postgres, Mssql server), Hibernate 

Secondary Skills

Java script, Frontend web development - (Angular,nodejs) ( Not mandatory)

Additional Information

• Should have experience of working in any previous IT Software company 
• Any additional certification will be a plus
• Comfortable working from Office.

Job title and location:

Sr. Backend Developer, based in Bangalore, India

Who we are:

VAHN is a seed-funded fintech and mobility application which integrates tracking, load planning, billing, performance management and cost management with a payment wallet and seamless credit to deliver a powerful solution for truck-owners and truck-drivers.

We are a very small team with a big idea and lots of passion, and we’re on a mission to bring Indian trucking into the next generation of tech.

The trucking industry in India is fragmented, unorganised, and fraught with numerous challenges that haven’t yet been solved. Although the industry is ripe for disruption, not many have been able to take advantage of the opportunity because of a lack of exposure to ground realities and practical challenges. Combining years of research and first-hand experience running trucks ourselves, we believe we have an edge.

We are looking for a passionate teammate who is as excited about the mission as we are, and is keen to delve deep into this challenging but exciting space. Trucking is getting upgraded, are you in?

What we are looking for:

//  Passion for good design and hunger for making a big impact

//  Extensive experience in backend engineering along with the best practices as per language

//  Ability to thrive in complexity

//  Leadership qualities and versatility

What you should enjoy doing:

//  Building exceptional products with robust and reliable code

//  Working in a fast-paced, ambiguous environment

//  Collaborating with designers playing a critical role in design, planning, development and deployment

//  Being the technical voice at the table, educating and guiding the business on the right approach, technologies, and trends

//  Building a team and mentoring fresh talent

What the role is about:

As a core team member you will design and develop the next-generation of technologies for the Indian trucking industry with the potential to change how millions of drivers, truck owners, transporters, and shippers manage their businesses and transact with one another. Some specific responsibilities include,

//  Building scalable, reliable, and high-performing tech infrastructure

//  Improving operational excellence by identifying and building the right solutions for observability and manageability

//  Continuously discovering, evaluating, and implementing new technologies to maximize development efficiency

//  Developing robust, quick prototypes for proof-of concept features / application based on briefs

//  Unit-test coding for robustness, including edge cases, usability, and general reliability.

//  Providing development support, code review and optimisation.

//  Working with outside data sources and APIs.

Qualifications:

//  5+ years of backend engineering experience

//  Experience working with Microservices/RESTful APIs (Http/WebSockets), /Swagger/OpenPI, third-party SDK Integrations and common technologies like HTTPS, JSON, OAuth, and SQL

//  Experience working with Java 11 and above, SpringBoot 5.x/Micronaut 3.x

// Proven experience at building actor based systems and Reactive programming is a big plus

// Demonstrated experience at using messaging system such as Kafka/Rabbit MQ/SQS/SNS

//  Experience at unit testing with Junit/Mockito

//  Good understanding of Data Structures and Algorithms

//  Experience with multi-tier application architecture and design

//  Cloud experience/knowledge (AWS/GCP)

//  Experience at developing containerised applications using Docker/Kubernetes

//  Experience at building systems using MySQL/Cassandra/MongoDB

//  Knowledge of Microservices patterns is a big plus

//  Knowledge of serverless computing (AWS Lambda/Cloud Functions) is a big plus

//  Experience in structuring solutions with Redis as caching layer

//  Experience at building integration with external systems is a plus

//  Strong written and verbal communication and ability to gain buy-in from a non-technical audience

• Expert knowledge of computer science, with strong competencies in data structures, algorithms,

  and software design.

• Strong understanding of end-to-end architectures and development frameworks; knowledge

  across tiers in a multi-tier cloud environment including load balancers, web servers, application

  containers, data stores, and distributed caches.

• Minimum 6 years of experience with deep technical knowledge and hands on skills in Java.

• Has worked extensively on caching technologies such as Redis, memcache.

• Should be strong with Data Strcutures, Algorithms & OOPs concepts.

• Worked on NoSQL databases such as MongoDb.

• Designed and developed highly scalable multi-threaded large scale distributed systems.

• Well versed with services and micro-services architecture.

• • Usage of containers, virtual machine systems, cloud computing.