Java FullStack Developer

Job Description – Senior Software Developer

 Key Responsibilities:

• Architect, develop and maintain web applications using the MERN stack.
• Design RESTful APIs (and possibly GraphQL) in Node.js/Express, integrate with front-end in React.
• Build and enhance the front-end UI in React, ensuring performance, responsiveness and maintainability.
• Design MongoDB schemas, indexes and queries for high-traffic/scale scenarios.
• Deploy, operate and optimise cloud infrastructure on AWS: e.g., EC2, Lambda, S3, RDS/DynamoDB, VPCs, IAM, autoscaling.
• Ensure high availability, fault-tolerance, and scalability of services in production.
• Set up and maintain CI/CD pipelines, infrastructure as code, automated testing, monitoring & alerting.
• Troubleshoot and fix performance bottlenecks across the stack (front-end, back-end, database, cloud).
• Collaborate with cross-functional teams (product, design, QA, DevOps) to deliver features end-to-end.
• Mentor junior/mid-level developers, conduct code-reviews, impart best practices.
• Stay up to date with emerging technologies, propose improvements to architecture and processes.

Required Skills & Qualifications:

• 3-5 years of hands-on experience in full-stack web development using the MERN stack (MongoDB, Express.js, React.js, Node.js).
• Strong front-end skills in React: component architecture, hooks, state management, performance optimisation.
• Solid back-end skills in Node.js/Express: API design, middleware, security, robustness.
• Experience with MongoDB (or equivalent NoSQL) including schema design, query optimisation, indexing.
• Proven experience working with AWS cloud services (compute, storage, database, networking, security, monitoring).
• Experience deploying applications at scale: autoscaling, high availability, disaster recovery.
• Familiarity with CI/CD pipelines, infrastructure‐as‐code (CloudFormation, Terraform or similar), containerisation (Docker) is a plus.
• Good understanding of software engineering best practices: code-quality, testing, documentation, version control (Git).
• Excellent communication skills, self-motivation, ability to work remotely and collaborate across time zones.
• Bachelor’s degree in Computer Science or related field (or equivalent experience).
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Job Description

Wissen Technology is seeking an experienced C# .NET Developer to build and maintain applications related to streaming market data. This role involves developing message-based C#/.NET applications to process, normalize, and summarize large volumes of market data efficiently. The candidate should have a strong foundation in Microsoft .NET technologies and experience working with message-driven, event-based architecture. Knowledge of capital markets and equity market data is highly desirable.

Responsibilities

• Design, develop, and maintain message-based C#/.NET applications for processing real-time and batch market data feeds.
• Build robust routines to download and process data from AWS S3 buckets on a frequent schedule.
• Implement daily data summarization and data normalization routines.
• Collaborate with business analysts, data providers, and other developers to deliver high-quality, scalable market data solutions.
• Troubleshoot and optimize market data pipelines to ensure low latency and high reliability.
• Contribute to documentation, code reviews, and team knowledge sharing.
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Required Skills and Experience

• 5+ years of professional experience programming in C# and Microsoft .NET framework.
• Strong understanding of message-based and real-time programming architectures.
• Experience working with AWS services, specifically S3, for data retrieval and processing.
• Experience with SQL and Microsoft SQL Server.
• Familiarity with Equity market data, FX, Futures & Options, and capital markets concepts.
• Excellent interpersonal and communication skills.
• Highly motivated, curious, and analytical mindset with the ability to work well both independently and in a team environment.

• Hands-on expertise in managing technical teams and work closely with business stakeholders
• Should be familiar with card testing and POS ecosystem.
• Experience with designing APIs and building platform integrations in Commerce, POS, FinTech and Payments
• Payment’s domain experience.
• Extensive experience on Base24 & SWITCH part for payment format.
• Exposure on ISO8583 Messaging system.
• API understanding and creation.
• Working knowledge on cryptographic algorithms (RSA, EC, AES, SHA variants), TLS/SSL protocols. C Symetric and A symetrics, K.M.S.
• Digital Payments technical knowledge - QR/ POS/ UPI/ BQR
• Understanding of CI/CD pipelines, Kubernetes, containerization, Docker
• Must have strong technical skills in Android APK and iOS development Concept and Web services.
• Supportability, monitoring, ops in general.
• Accurate cost models to deploy and operate
• Extensive experience in TLOG’s, data integration with downstream applications, and impact of POS changes on different financial, legal, compliance, loss prevention, etc. applications.
• Extensive experience with payment systems 7861 (EMV, payment middleware, encryption, tokenization, settlement, offline scenarios,).
• Extensive experience with different types of payment methods including credit, debit, gift cards (Both closed loop and open loop), PLCC, PayPal, AliPay, checks, etc. as well as different payment form factors like Tap N Go, contactless, swipe, EMV, Mobile, etc.
• Extensive experience with payment devices (pin pads, printers, registers, scanners).
• Experience in Node.js / Java / Python, building REST APIs, with experience/exposure to front end stack like JavaScript & React / Angular. 
• Experience with Storage systems - RDBMS, NoSQL (Cassandra/MongoDB), Redis/Memcache/Aerospike.
• Experience in messaging tools like Kafka/AWS Kinesis etc...
• Design expertise for performance, scalability, fault tolerance and high availability

• Experience with POS systems and Payments domain.
• Demonstrated experience for systems architecture, design, and integration for POS systems
• Java and/or Node.js. Experience building micro services (REST APIs) using Node.js
• Experience with one or more RDBMS databases like MySql, PostGreSQL
• Experience with one or more NoSQL databses like MongoDB, Cassandra, DynamoDB, Aerospike, Elastic Search, Redis, neo4j etc.,
• Caching technologies like: Redis, Elasticache,
• Cloud Providers like: AWS/ Google Cloud / Azure
• CI / CD : Jenkins, Docker, Kubernete
  

Experience: 5 to 6 years

Tertiary qualifications in Software Engineering.

2+ years experience in front end development using React or another JS or TS based language such as VueJS, Angular 8years.

2+ years experience in modern web design.

2+ years experience in full stack development using Python or PHP based backends.

1+ years experience microservices development.

1+ years experience with AWS Lambda, API Gateway or similar.

Understanding of OAuth or OIDC authentication flows Understanding of the OWASP Top 10 secure coding recommendations.

Exposure to basic Database Design.

Exposure to and understanding of PromQL or GraphQL, REST and SOAP.

Requirements:

Ability to work effectively in a team and independently.

Excellent English written and verbal communication skills.

Ability to multi-task and work under pressure.

Strong organizational, analytical and problem solving skills.

Ability to develop and maintain strong interpersonal working relationships with peers and customers.

Thoroughness and a high level of attention to detail.

Must be able to conceptualise systems that comprise of people, process and/or technologies and consider the broader integration perspectives.

We need multiple MERN stack developers. As a full stack developer, you will be producing scalable software solutions and will be involved in the full software development life cycle, from conception to deployment. You should be comfortable around both front-end and back-end coding languages, development frameworks and third-party libraries. This isn't just another CRUD application. Your challenge will be to deliver a highly-available service on top of a dynamic collection of third-party data sources . Explore the limits of your own resourcefulness by designing human and automated systems that deliver true reliability in an otherwise unpredictable environment.

Tech-Stack: React, Node.js, Javascript, and MongoDB

How You Will Contribute

• Work with the development team to ideate software solutions
• Working through the application development lifecycle to launch
• Conceptualizing, creating and building applications alongside taking designer wireframes and magically turning them into effective code
• Designing user-based interactions through effective front-end architecture
• Develop and manage well-functioning databases and back end applications
• Write effective and scalable APIs
• Leading and developing best practices for Full Stack Developer team
• Developing and designing RESTful services and APIs
• Determining application responsiveness for consumers
• Ensuring company mandate is effectively addressed in technical and developmental aspects
• Create security and data protection settings
• Write technical documentation
• Keeping current with industry trends and developments that can be applied to company needs

Technical Expertise That We Believe Will Make You Successful In This Role

• Min 1 year of experience as a MERN Stack Developer
• Fluency in CSS, JavaScript and HTML
• Understanding of CSS preprocessors including Sass
• Strong knowledge of building effective APIs in Node.js (Express)
• Proficiency in writing effective React components.
• Experience working with MongoDB, Redis and AWS
• Good knowledge of data structures, system design and algorithms
• Bachelor/Master degree in Computer Science
• Soft-Skills That Will Come Handy
• Having a knack for visual design and utility
• Excellent written and verbal communication skills
• Strong attention to detail
• Head for problem-solving
• Having a flexible working style
• Being a team player
• Comfortable with working unsupervised

What We Need

- Solid industry experience

- Web Development using MERN Technologies (Mongo, React / React JS, Express JS or similar, Node)

- Server-side scripting skills with Node.JS

- Good understanding of client-side scripting and JavaScript frameworks, including jQuery.

- Databases - MongoDB, PostGreSQL, Cassandra

Good to Have

- Open Source Contributors (esp. Javascript to be evident from GitHub)

- Notice period to be less than 30 days

ABOUT THE STARTUP:

Lamamia is founded by IIM alumni and mentored by seasoned professionals from Flipkart.com, CommonFloor.com, Adani Group, TATA Group, Suzlon, and professors from IIT, IIM and XLRI.

Lamamia is incubated by IAMAI, (chaired by Mr Amit Agarwal, Amazon India Head) in association with Govt. of Haryana. It is also incubated by FIED IIM Kashiur for mentoring and funding support.

Lamamia is an Uber for Vernacular skilling and Education, wherein educators can create and share their micro-lessons and micro-tests with the learners spread across the remote and rural part of India. Students can choose the educators, courses and assessment tests to enhance their knowledge, skill, aptitude and employability. 

DESIRED SKILLS:

1. AWS (EC2/S3/Lambda)
2. DynamoDB
3. Node.Js
4. HTML5, Javascript, React.Js
5. Android Native (Java/Kotlin)
6. Socket.io / WebRTC (LiveStreaming)
7. Firebase
8. Prior experience in developing/integration livestreaming feature is essential.

JOB DESCRITION

1. Enhancing the existing features and developing the new features
2. Being able to develop the product independently and also with the team .
3. Being able to work under pressure and think out of the box.
4. Being a good leader with decent professional communication skills.
5. Knowledge and experience of Android Development is an added advantage

OUR PRODUCT

Understand The Product Features:

https://play.google.com/store/apps/developer?id=Lamamia&;hl=en_IN

1. Our product offers on-demand video lessons and quizzes in local languages.
2. Teachers can independently create and share their content.

WHAT WE OFFER:

1. Opportunity to work as a core team member
2. Direct Reporting to Founders
3. Exponential and 360 degree learning
4. Working with an experienced team from IIM
5. 4.2 - 7.8 LPA (INR) CTC + ESOPs*

Leaders at The Seenit Co. are passionate about using technology to create an impact on the world they live in. At Seenit, you will get to collaborate with an accomplished team that loves solving real-world problems. You will get to work on cutting edge projects that will shape the next phase of growth for the global luxury industry.

Seenit’s suite of products (http://www.styleade.com/" target="_blank">www.styleade.com) enables the leading luxury retailers around the world to transform their customer experience and build loyal relationships with their customers. The apps allow retailers to make use of their existing infrastructure and resources to deliver a truly omnichannel experience in today's rapidly changing world of shopping. The product has added 50 million USD to the top-line of one of the largest luxury retailers in the world. Store Associates and Stylists have assisted upwards of 100,000 consumers till date.

We would welcome someone to the team who wishes to:

• take ownership of the quality of code powering the product
• take an active role in the definition and evolution of best industry practices and procedures
• design, develop and test the core product software and databases to ensure strong optimization and functionality
• contribute in all phases of the development lifecycle
• support others to succeed and shine in a supportive team culture

• 4+ years experience in building consumer products
• experience of leading a team of 3 or more full stack developer
• Codeigniter Preferred 
• Good knowledge of Mysql and query optimisation
• Experience with PHP 7, HTML5, AJAX, JavaScript, JQuery, CSS, MVC frameworks (Bootstrap), API
• Experience with Ubuntu OS is a plus
• experience deploying softwares to cloud providers such as GCP, AWS