Java Developer,

Job Title: Lead Java Developer

Experience Required: 7+ Years

Location: Mumbai

About the Role

We are seeking a highly skilled Senior Backend Developer with deep expertise in building scalable, high-performance applications. The ideal candidate will have strong hands-on experience with Java, Spring Boot, Microservices, and distributed systems. You will play a key role in designing and optimizing APIs, architecting robust systems, and collaborating with cross-functional teams to deliver innovative solutions.

Key Responsibilities

• Design, develop, and maintain scalable backend systems using Java, Spring Boot, and Microservices architecture.
• Build and optimize APIs for large-scale applications ensuring high performance and reliability.
• Apply clean coding principles, SOLID design patterns, and clean architecture to deliver maintainable and robust code.
• Work with distributed systems technologies (Kafka, ELK, in-memory databases, Cassandra, or similar).
• Write efficient SQL queries and integrate with relational and NoSQL databases.
• Collaborate with product managers, architects, and other developers to define and align on technical decisions.
• Identify and solve complex problems with innovative and scalable solutions.
• Drive best practices in coding standards, system design, and performance optimization.
• Communicate complex technical concepts clearly across teams and stakeholders.

Skills & Qualifications

• 7+ years of experience as a Backend Developer.
• Strong expertise in Java, Spring Boot, Microservices, SQL.
• Significant experience in API design and optimization for enterprise-scale applications.
• Proficiency in distributed systems & related technologies (Kafka, ELK, in-memory DBs, Cassandra, etc.).
• Strong understanding of object-oriented engineering principles (SOLID, clean architecture).
• Excellent problem-solving and analytical skills with the ability to simplify complex concepts.
• Strong communication and collaboration skills, with the ability to influence and align teams.

Key Responsibilities:

- Design, develop, and execute automated test scripts for trading applications.

- Work with product owners and business analysts to understand and write the acceptance test cases.

- Collaborate with developers, product managers, and other stakeholders to understand requirements and create test plans.

- Perform regression, performance, and end to end testing to ensure software reliability.

- Identify, document, and track defects using appropriate tools and methodologies.

- Maintain and enhance existing test automation frameworks for both frontend and backend.

- Report on coverage, functionality, defect aging, closure reports to the stakeholders so that they know the stability of releases.

- Integrate automation cases into CI/CD pipelines

Qualifications:

- Bachelor’s degree in Computer Science, Engineering, or a related field.

- Proven 5+ Years experience in automation testing for web and backend applications.

- Strong knowledge of testing frameworks (e.g., Selenium, Cypress, JUnit, TestNG, Playwright).

- Experience with API testing tools (e.g., Postman, SoapUI, RestAssured).

- Familiarity with programming languages such as Java, Python, or JavaScript.

- Understanding of basic SQL queries to validate data in the databases

- Understanding of CI/CD processes and tools (e.g., Jenkins, GitLab CI).

- Strong analytical and problem-solving skills.

- Excellent communication and teamwork abilities.

- Prior experience with trading applications or core financial services related applications is a big plus

We are solving complex technical problems in the financial 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.

Job Description: 

• Experience in Core Java, Spring Boot.

• Experience in microservices.

• Extensive experience in developing enterprise-scale systems for global organization. Should possess good architectural knowledge and be aware of enterprise application design patterns.

• Should be able to analyze, design, develop and test complex, low-latency client-facing applications.

• Good development experience with RDBMS in SQL Server, Postgres, Oracle or DB2

• Good knowledge of multi-threading

• Basic working knowledge of Unix/Linux

• Excellent problem solving and coding skills in Java

• Strong interpersonal, communication and analytical skills.

• Should be able to express their design ideas and thoughts.

About Wissen Technology:

Wissen Technology is a niche global consulting and solutions company that brings unparalleled domain expertise in Banking and Finance, Telecom and Startups. Wissen Technology is a part of Wissen Group and was established in the year 2015. Wissen has offices in the US, India, UK, Australia, Mexico, and Canada, with best-in-class infrastructure and development facilities. Wissen hassuccessfully delivered projects worth $1 Billion for more than 25 of the Fortune 500 companies. The Wissen Group overall includes more than 4000 highly skilled professionals.

Wissen Technology provides exceptional value in mission critical projects for its clients, through thought leadership, ownership, and assured on-time deliveries that are always ‘first time right’.

Our team consists of 1200+ highly skilled professionals, with leadership and senior management executives who have graduated from Ivy League Universities like Wharton, MIT, IITs, IIMs, and NITs and with rich work experience in some of the biggest companies in the world.

Wissen Technology offers an array of services including Application Development, Artificial Intelligence & Machine Learning, Big Data & Analytics, Visualization & Business Intelligence, Robotic Process Automation, Cloud, Mobility, Agile & DevOps, Quality Assurance & Test Automation.

We have been certified as a Great Place to Work® for two consecutive years (2020-2022) and voted as the Top 20 AI/ML vendor by CIO Insider.

• Previous experience working as a React.js Developer.
• Strong proficiency in JavaScript, including DOM manipulation and the JavaScript object model Thorough understanding of React.js and its core principles
• Familiarity with RESTful APIs
• Knowledge of performance testing frameworks including Mocha and Jest.
• Familiarity with code versioning tools (such as Git )
• Experience with browser-based debugging and performance testing software.
• Excellent troubleshooting skills.
• Good project management skills.

Node JS Developer
JD:

• In depth knowledge of Node.js (with framework, probably Sails.js or at least Express.js)

• Thorough understanding of relational databases such as MySQL or similar technologies.

• Complete knowledge on MongoDB database.

• Excellent coding skill in Node.js, JavaScript

• AWS Hosting.

• Knowledge working closely with git.

• Experience with the Express.js framework.

• Proficiency in Linux environment.

• Agile/Scrum development cycle understanding.

• Excellent communication skills and being able to work independently or in a full team.

MoEngage is a fast-paced startup that’s helping companies run smart marketing efforts in their effort to reach the customer. We are a leading Marketing Technology Stack provider that is helping brands redefine their customer engagement in the mobile era. Brands use MoEngage to drive long-term, personalised and context-based engagement across channels to help achieve increased customer retention as well as customer LTV. Sitting at a conflux of diverse technologies like Artificial Intelligence, Big Data, Web & Mobile platforms, MoEngage technology analyses billions of data points generated by customers and their devices, to predict customer behavior and build marketing campaigns that proactively engage users.

In just four years since inception, MoEngage is working with leading brands across e-commerce, entertainment, travel, publishing and banking domains among others. With marquee clients like Vodafone, Oyo, Airtel, McAfee, MoEngage has over 125+ paying Customers in the Enterprise & Internet companies space in India, US, South East Asia & EU. With a global presence spanning 35 countries, MoEngage has offices in San Francisco, Berlin, Jakarta, and Bengaluru.

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.

About InApps team

In-app team is responsible for effectively delivering the contextual information to help companies cross-sell/up-sell on specific workflows triggered on desired actions performed by application users. As a member of in-app team, you will be working on developing high performance systems to deliver the contextual campaigns in real time. In addition to real time campaign delivery, you will work on designing a flexible platform to provide customised experience for application users using web personalization, which allows companies to present unique and personalized experiences on their applications.

• Scaling campaign delivery with personalized content to 500M unique users within 1 sec.
• Rich campaign content delivery keeping user experience native to mobile and web applications.

• Proven experience in handling large infrastructure and distributed systems
• Proven experience in managing high performing engineering teams
• Proven experience with at least one of the cloud computing infrastructure - GCP / Azure / AWS
• Hands on in Java OR Python related technologies and frameworks
• Familiarity with ElasticSearch, MongoDB is a plus
• Liaison with Product Management, DevOps, QA and other teams
• Performance management, Sprint management, Roadmap, Hiring, Onboarding, Mentoring, Costing, Documenting

At MoEngage, we are passionate about our team and technology - see below to know more about us and technology.

https://twitter.com/hashtag/lifeatmoengage?f=tweets&;vertical=default">Life @MoEngage

https://twitter.com/hashtag/techatmoengage?f=tweets&;vertical=default">Tech @MoEngage

https://www.moengage.com/blog/techatmoengage-reddit-has-330m-monthly-active-users-so-do-we/">Scale @MoEngage

We handle more than a billion messages everyday. Rest assured, you will be surrounded by really smart and passionate people as we scale much more to build a world class technology team.

Description

We are looking for a stellar Mobile App developer to help us build our next Android app for our IoT Devices/Application.

Responsibilities:

• Build our Android app for our IoT Devices/Applications
• Work with product owners to spec the requirements.
• Design, code, test and deliver various features in our product roadmap
• Fix customer issues as needed.
• Integration with Amazon Alexa, Google Home Kit and other third party platforms.

Requirements

Required Skills:

• 4+ yrs experience in building Mobile apps for Android for Phone and tablet using Java
• 2+ yrs experience in building Mobile apps for Android using Kotlin
• Strong UI development skills in terms of design
• 2+ yrs in building/consuming APIs
• Hands on knowledge of IoT
• Hands on knowledge of Unix/Linux.
• Knowledge of any of the Application servers like Apache/ NginX
• Good oral and written communication skills in English

Preferred Skills:

• 1+ yrs in building IoT/Embedded devices.
• 2+ years experience in HTML, JS, AJAX, and related browser side web technology
• 2+ yrs in Python, Php, Java, Node.js is desirable
• Strong networking knowledge.
• Experience with scrum development, Jira & Git