Software Design Engineer

Java Developer – Job Description Wissen Technology is now hiring for a Java Developer - Bangalore with hands-on experience in Core Java, algorithms, data structures, multithreading and SQL. We are solving complex technical problems in the 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. Required Skills: • Exp. - 4 to 7 years. • Experience in Core Java and Spring Boot. • Extensive experience in developing enterprise-scale applications and systems. Should possess good architectural knowledge and be aware of enterprise application design patterns. • Should have the ability to analyze, design, develop and test complex, low-latency client facing applications. • Good development experience with RDBMS. • Good knowledge of multi-threading and high-performance server-side development. • Basic working knowledge of Unix/Linux. • Excellent problem solving and coding skills. • Strong interpersonal, communication and analytical skills. • Should have the ability 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 has successfully 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. 

Required Qualifications:

• OOPS - In-depth understanding of Object Oriented Programming principles

• Solid - In-depth knowledge and practical knowledge of applying SOLID design principles

• Architectural Patterns - In-depth understanding of design patterns and have experience in designing and building complex architecture solutions

• React + Typescript - Extensive hands-on experience in React + Typescript, building high-performance complex frontends

• Unit testing - Ability to write Unit Testing using Jest framework

• Dotnet core webapi - Extensive hands-on experience in writing WebAPIs using dotnet core. Should have advanced knowledge on middlewares, auth flow, etc.

• C# - Solid knowledge on advanced C# language features like Lambda functions, Generics, etc.

• Entity Framework - Solid knowledge on Entity framework database first and code first approach

• Unit testing - Ability to write Unit Testing using popular mock frameworks and XUnit framework

• SQL - Advanced - Extensive hands-on experience in Microsoft SQL (DDL, DML, Aggregates, Functions, Stored proc, etc)

• Query Performance Tuning - Ability to understand query plans and tune compelx queries to improve performance

• Core services - Advanced knowledge and hands-on in building applications hosted in AWS using ECS containers, API Gateway, Lambda, Postgres/DynamoDb

• IAC - Hands-on experience in writing Teraform Scripting - CI/CD, Github pipelines

Tech Stack

Frontend: React.js, TypeScript, Next.js, React Native, Redux, GraphQL, Tailwind CSS

Backend & Infra: Java (Spring Boot), Microservices, AWS ECS, Redis, ScyllaDB, MongoDB,

GraphQL, AWS Lambda, MySQL, Aurora

Event Driven & AI: SQS, Kinesis, Claude, Cursor, LangChain

Observability: Prometheus, Grafana, CloudWatch, Sentry

Engineering Excellence: JVM tuning, GC profiling, Circuit Breakers, Async Tracing

We’re hiring an experienced Full Stack Engineer (React + Java) with 5–10 years of

experience to design, build, and scale real-time web applications for our global B2B

hotel marketplace.

You’ll work across the stack—from building intuitive, data-driven UIs to

high-performance backend services that power our distribution engine.

Responsibilities

● Build and maintain end-to-end features spanning React.js frontends and Java

(Spring Boot) microservices and database integrations .

● Develop responsive, performant, and accessible UIs integrated with REST

and GraphQL APIs.

● Design and scale low-latency, high-throughput microservices for real-time

data workflows.

● Implement event-driven systems using Kafka or SQS for asynchronous

communication.

● Collaborate closely with Product, Design, and Architecture teams to translate

business requirements into scalable technical solutions.

● Optimize application performance via caching strategies, async processing,

and database tuning.

● Implement and maintain CI/CD pipelines, test automation, and monitoring

frameworks.

● Leverage AI-assisted tools (Claude, Cursor, etc.) to boost velocity and maintain

code quality.

● Participate in code reviews, design discussions, and architecture decisions.

● Write clean, maintainable code, follow design patterns, maintain high test

coverage, and document key technical decisions.

Requirements

● 6–10 years of full stack development experience with a proven track record in

production systems.

● Strong proficiency in React.js, JavaScript/TypeScript, Redux (or similar state

management) and modern frontend frameworks.

● Solid backend experience with Java, Spring Boot, and Hibernate.

● Database experience with MySQL, MongoDB, or ScyllaDB.

● Hands-on with microservices, AWS (ECS/Lambda), SQS, and GraphQL.

● Familiarity with event-driven architectures and caching layers (Redis) and

asynchronous processing.

● Working knowledge of observability tools (Prometheus, Grafana, CloudWatch,

Sentry).

● Understanding of data structures, algorithms, and system design

fundamentals.

● Passion for clean code, testability, and engineering excellence.

● Strong analytical and communication skills with the ability to collaborate across

Product, Design, and QA teams.

● Comfortable in a remote-first, asynchronous, and ownership-driven culture.

Nice to Have

● Experience with React Native or mobile web frameworks.

● Exposure to Kafka, Kinesis, or other event-streaming platforms.

● Familiarity with CI/CD (GitHub Actions, Docker) and container orchestration

(ECS).

● Experience with AI-assisted development, LLMs, or LangChain pipelines.

● Domain exposure to B2B platforms, travel-tech, or high-scale marketplaces.

● Background in Test-Driven Development (TDD) or Agile methodologies.

Why Join Us?

● Work on mission-critical, high-scale systems used by global hotel brands.

● Build real-time, low-latency products impacting millions of hotel transactions

daily.

● Be part of a remote-first, AI-accelerated engineering culture that values

autonomy and quality.

● Collaborate with senior engineers and architects solving complex distributed

system challenges.

● Competitive compensation with equity participation and career growth

opportunities.

● Learn and work with cutting-edge AI tools—from code generation to

observability automation.

Enterprise Minds, with core focus on engineering products, automation and intelligence, partners customers on the trajectory towards increasing outcomes, relevance and growth.

Harnessing the power of Data and the forces that define AI, Machine Learning and Data Science, we believe in institutionalizing go-to-market models and not just explore possibilities.

We believe in a customer-centric ethic without and people-centric paradigm within. With a strong sense of community, ownership, and collaboration our people work in a spirit of co-creation, co-innovation and co-development to engineer next-generation software products with the help of accelerators.

Through Communities we connect and attract talent that shares skills and expertise. Through Innovation Labs and global design studios we deliver creative solutions.
We create vertical isolated pods which has narrow but deep focus. We also create horizontal pods to collaborate and deliver sustainable outcomes.

We follow Agile methodologies to fail fast and deliver scalable and modular solutions. We constantly self-asses and realign to work with each customer in the most impactful manner.

Pre-requisites for the Role

1.Job ID-EMDF0120PS

1. Primary skill:

• C#, JavaScript, CSS, JQuery /Angular 2 +(Angular version 2 or higher), Typescript
• Microsoft .Net (ASP.NET & ASP .NET CORE)
• MVC and WebAPI
• MS SQL

1. Secondary skill:

Strong background in Microsoft Technologies and SDLC concepts. Should have experience in below technologies

MS SQL Server management Studio (SSMS) to develop database objects such as Stored Procedures, Functions, views, triggers, constraints etc. and look for performance tuning and Exception handling for these components

 (Good to have)

Good to have: Understanding of MS Excel VBA /MS-access/ macro codes

4.Years of Experience: 5-8 Years

1. Location:(Remote)
2. Position-1
3. Budget- Max 25 LPA
4. NP- Immediate

Role: FullStack Developer

Experience: 1+ years

Location: Madurai

Mode: Work from office

We have vast experience in delivering high-quality products with significant output on time. We are specialized in creating web and mobile applications with the latest technology. We are expert in developing a perfect solution for rental marketplace services and on-demand businesses done by our proficient team of experts with strong experience in development.

• Minimum of 6 months of real-time experience in React/Node.js/Angular
• Good understanding of structured and unstructured databases (MySQL and MongoDB)
• Knowledge of isomorphic React is an added advantage
• Experience in implementing well-known React workflows such as Redux
• Ability to learn new technologies and languages quickly
• Proficient understanding of code versioning tools, such as Git
• Experience with Javascript backend framework like Express.js
• Good time-management skills
• Experience with Restful API services
• Delivering a complete front end application
• Professional, precise communication skills
• Deep knowledge of Angular/Node.js/React practices and commonly used modules based on extensive work experience
• Good knowledge in Javascript and able to handle Array & Objects built-in methods
• A Good logical thinking and problem-solving skills
• A good team player

Responsibilities:

• Designing and building the website front-end.
• Experience and ability to translate designs into Wordpress pages using Page Builder (Visual Composer, Divi or Elementor) and PHP
• Designing and managing the website back-end with PHP including database and server integration.
• Developing custom Wordpress themes.
• Integration of third party plugins and APIs.
• Conducting website performance tests.
• Troubleshooting Wordpress related issues.

Requirements:

• Proficient with any plugin.
• Proven work experience as a WordPress developer
• Knowledge of front-end technologies including CSS3 and HTML5
• Knowledge of code versioning tools including Git.
• Good understanding of website architecture and aesthetics.
• Ability to manage projects.
• Good communication skills.

Job Description:

• Knowledge of front-end technologies like Vue JS/ Angular JS / ReactJS .
• Basic knowledge of GIT or  BitBucket  or TFS or Jenkins
• Experience in technologies like Devops, NodeJS, ExpressJS, .Net Core
• Understanding of Microservice architecture , Docker containers and  Database designs
• Knowledge of various AWS services such as CloudWatch, Lambda, EC2, ECS, S3, AWS Document DB/DynamoDb, Cloud formation
• Soft skills - Self driven and independent, Good team player, good interpersonal skills, Flexible and Proactive, Good communication with client.
• Building reusable components and front-end libraries for future use.
• Optimizing components for maximum performance across a vast array of web-capable devices and browsers.
• Ability to understand business requirements and translate them into technical requirements.
• Translating designs and wireframes into high quality code.
• Review the React code of team members, Help technically where-ever required as a one- team approach.

JOB Description :

We are looking for a candidate who is dedicated and ready to take responsibility for work and interested to do work from home in this COVID duration(Freelancer full-time job).

 

2+ Years of experience in Microsoft .NET Technologies.

Strong knowledge of Database Design concepts.

Strong knowledge of Object-Oriented Programming concepts.

Knowledge of Design Patterns, and SOLID principles.

Must have experience with:

ASP.Net MVC, SQL, Entity Framework, LINQ, JQuery, WEB APIs, Dependency Injection, WCF services (Nice to have).

Must have experience with:

Database Design - Relations, Cardinality, Constraints, Indexes.

Database Data Manipulation - Select, Joins, Group By, Aggregate Functions, Subquery, Stored Procedures, Functions.

SSRS reports (Nice To have).

Writing Quality Code - Naming Conventions, Exception Handling, Logging, Reusability, OOP Concepts, SOLID principles.

Good to have knowledge of - HTML, CSS, Javascript/ jQuery/ KnockoutJS, AJAX.

Understanding of Agile methodology.

Highly developed analytical and problem-solving skills.

Excellent troubleshooting and communication skills.

About the Company:

Kratin LLC. is a leading innovation and design company focusing on healthcare. Kratin’s Unified Health Experience (UHX) platform is an award-winning solution for connecting dot across the care continuum with mobile and high tech solutions.