
Company: Wissen Technology
JOB DESCRIPTION
Experience: 5 to 10 years
Location: Bengaluru
Wissen Technology is now hiring for a Senior 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. - 5-10 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
About
The Wissen Group was founded in the year 2000. Wissen Technology, a part of Wissen Group, was established in the year 2015. Wissen Technology is a specialized technology company that delivers high-end consulting for organizations in the Banking & Finance, Telecom, and Healthcare domains.
With offices in US, India, UK, Australia, Mexico, and Canada, we offer 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.
Leveraging our multi-site operations in the USA and India and availability of world-class infrastructure, we offer a combination of on-site, off-site and offshore service models. Our technical competencies, proactive management approach, proven methodologies, committed support and the ability to quickly react to urgent needs make us a valued partner for any kind of Digital Enablement Services, Managed Services, or Business Services.
We believe that the technology and thought leadership that we command in the industry is the direct result of the kind of people we have been able to attract, to form this organization (you are one of them!).
Our workforce consists of 1000+ highly skilled professionals, with leadership and senior management executives who have graduated from Ivy League Universities like MIT, Wharton, IITs, IIMs, and BITS and with rich work experience in some of the biggest companies in the world.
Wissen Technology has been certified as a Great Place to Work®. The technology and thought leadership that the company commands in the industry is the direct result of the kind of people Wissen has been able to attract. Wissen is committed to providing them the best possible opportunities and careers, which extends to providing the best possible experience and value to our clients.
Connect with the team
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We are seeking a highly skilled Senior Backend Developer with deep expertise in Python and FastAPI to join our team. This role focuses on building high-performance, scalable backend services capable of handling high request volumes while integrating advanced LLM technologies.
The ideal candidate will design robust distributed systems, implement efficient data storage solutions, and ensure enterprise-grade security within an Azure-based infrastructure. This is a great opportunity to work on AI/ML integrations and mission-critical applications requiring high performance and reliability.
Key Responsibilities:
Backend Development
- Design and maintain high-performance backend services using Python and FastAPI
- Implement advanced FastAPI features such as dependency injection, middleware, and async programming
- Write comprehensive unit tests using pytest
- Design and maintain Pydantic schemas
High-Concurrency Systems
- Implement asynchronous code for high-volume request processing
- Apply concurrency patterns and atomic operations to ensure efficient system performance
Data & Storage
- Optimize MongoDB operations
- Implement Redis caching strategies (TTL, performance tuning, caching patterns)
Distributed Systems
- Implement rate limiting, retry logic, failover mechanisms, and region routing
- Build microservices and event-driven architectures
- Work with EventHub, Blob Storage, and Databricks
AI/ML Integration
- Integrate OpenAI API, Gemini API, and Claude API
- Manage LLM integrations using LiteLLM
- Optimize AI service usage within the Azure ecosystem
Security
- Implement JWT authentication
- Manage API keys and encryption protocols
- Implement PII masking and data security mechanisms
Collaboration
- Work with cross-functional teams on architecture and system design
- Contribute to engineering best practices and technical improvements
- Mentor junior developers where required
Must-Have Skills & Requirements
Experience
- 7+ years of hands-on Python backend development
- Bachelor’s degree in Computer Science, Engineering, or related field
- Experience building high-traffic, scalable systems
Core Technical Skills
Python
- Advanced knowledge of asynchronous programming, concurrency, and atomic operations
FastAPI
- Expert-level experience with dependency injection, middleware, and async code
Testing
- Strong experience with pytest and Pydantic schemas
Databases
- Hands-on experience with MongoDB and Redis
- Strong understanding of caching patterns, TTL, and performance optimization
Distributed Systems
- Experience with rate limiting, retry logic, failover mechanisms, high concurrency processing, and region routing
Microservices
- Experience building microservices and event-driven systems
- Exposure to EventHub, Blob Storage, and Databricks
Cloud
- Strong experience working in Azure environments
AI Integration
- Familiarity with OpenAI API, Gemini API, Claude API, and LiteLLM
Security
- Implementation experience with JWT authentication, API keys, encryption, and PII masking
Soft Skills
- Strong problem-solving and debugging skills
- Excellent communication and collaboration
- Ability to manage multiple priorities
- Detail-oriented approach to code quality
- Experience mentoring junior developers
Good-to-Have Skills
Containerization
- Docker, Kubernetes (preferably within Azure)
DevOps
- CI/CD pipelines and automated deployment
Monitoring & Observability
- Experience with Grafana, distributed tracing, custom metrics
Industry Experience
- Experience in Insurance, Financial Services, or regulated industries
Advanced AI/ML
- Vector databases
- Similarity search optimization
- LangChain / LangSmith
Data Processing
- Real-time data processing and event streaming
Database Expertise
- PostgreSQL with vector extensions
- Advanced Redis clustering
Multi-Cloud
- Experience with AWS or GCP alongside Azure
Performance Optimization
- Advanced caching strategies
- Backend performance tuning
Key Responsibilities:
- Development of a Single Page Application (SPA) and it's components in Typescript: deployed and optimized for progressive mobile and browsers using Angular 2 and Ionic 2 frameworks.
- Creating custom, general use modules and smart components which extend the elements and modules of core Angular framework.
- Creating self-contained, reusable, and testable modules and components in Typescript and using responsive HTML and CSS.
- Architecting and automating the build process for production, using task runners or scripts.
- Writing non-blocking code, and resorting to advanced techniques such as multi-threading, when needed
Skills and Qualifications:
- Should have experience with CSS 3, SCSS, Java script and HTML5.
- Full-time knowledge of Angular practices and commonly used modules based on extensive work experience. Or 2 Year or more experience with other industry-leading frameworks like React.
- Minimum 1-year experience in working and extending one of the CSS or UI frameworks like Ng-lightening, Angular-material
Education:
- BE / BTech / MCA

Founded in 2016, they are one of the leading online scheduling software companies in the world, with over 200,000 customers globally. They are a profitable, high-growth bootstrapped platform-as-a-product company with 50+ team members looking to grow to $50M in revenue in the next 3 years.
Role: SSE- Backend [Golang]
Location: Remote (India)
CTC: 22-26 LPA
NP: 30 days or less
Note: Other Backend Language /Frameworks like Python, NodeJS and Java Springboot and willingness to learn Golang can also be considered
Skillset Requirements:
- Strong experience with backend programming languages and technologies like
- Golang (minimum 2-year experience)
- Protobuf and gRPC
- RESTful APIs
- Docker and Kubernetes
- Medium-level experience with PostgreSQL and MySQL database concepts.
- Ability to write efficient, secure, well-documented, and clean code.
- Proven ability to work with multiple teams, multitask and prioritize.
- Experience with Git, JIRA, and Agile working methodology.
- Experience with design patterns, Event-Driven architecture, and Domain Driven Designs.
Responsibilities:
- Write code that meets standard and delivery guidelines.
- Mentor fellow engineers in the team to develop high-quality software and perform code
reviews.
- Work with the team to break user stories into tasks and delegate them to the team
members.
- Playing a key role in architectural and design decisions, building toward an efficient
microservices distributed architecture.
- Analyze solutions and help implement engineering best practices.
- Work with Project Managers for timely delivery and forecast.
- Lead and mentor junior engineers on technical issues. Perform blameless RCAs when
issues occur and take ownership to resolve issues.
#remotejobs #bootstrapped #platformasaproduct #highgrowth
MCA /B.E/B.Tech/BCA
Experience
3-4 years: 2 Position
Core Skill Sets
Core Programming Language*: JAVA 7/8 or above
o Command on basics/core.
o Knowledge of OOPS concept.
o Problem solving skills using Collections/Java Beans/OOPS concept.
Web Programming Language*: J2EE
o Knowledge of MVC architecture [Servlet (or) Struts 2 (or) Spring].
o Able to debug and deploy web-application.
Database*: Preferably Oracle/MySql
o Able to write sql queries.
o Knowledge of sql joins.
o Basic idea of stored procedures.
Additional Skill Sets
XML/JSON/CSV
o Knowledge of understanding XML/JSON/CSV documents.
Web-service
o Knowledge of understanding web-service (REST Full).
o Testing web-services via some tool (e.g. Postman).
Web/Application Server*: Apache/Tomcat/JBoss/Weblogic/Websphere
o Basic deployment experience on web applications.
OS Platform*: Linux.
o Knowledge of shell commands like create directory, change permission/owner,
move/copy files/folder, check process running and crontab.
o Knowledge to work and use putty.
Development Tool*: Eclipse/NetBeans.
Purpose of the Position
Perform day-to-day support activity at the client side.
Monitoring all the application components as part of the daily monitoring process to make sure the components and services are functional.
Regularly monitor the logs of the components and services and identify and debug the
errors if any and accordingly co-ordinate with the off-shore team if needed.
Support off-shore team to help deploy their application components and services.
Perform basis debugging activity to identify any issue present in the client environment and provide the details to the off-shore team.
About Company :
IRIS Business Services Limited is one of the first providers of full professional XBRL products and solutions to organizations globally. The company headquartered in Mumbai, India with international offices in United States, Singapore, United Kingdom, and the UAE.
IRIS is a direct member of XBRL International and XBRL US. The Company has over eighteen years of proven expertise in the financial information management space, providing customized technology solutions for data and content management, for the dissemination of information to investors and stock exchanges, and for effective content management to institutional clients.
Over the last seven years, IRIS has been very closely involved in the XBRL space, in taxonomy creation, software solutions and in the conversion of structured and unstructured data into XBRL for SEC filing in the US. IRIS has multidisciplinary skills in XBRL as well as in technology. Taxonomy experts, software engineers, business analysts and accountants come together to provide a complete range of products and services across the XBRL supply chain.
For more information, please visit http://www.irisbusiness.com
• Nodejs
• Data structure & Algorithms
DESIRED SKILLS & EXPERIENCE
• BE/BTech in Computer Science or related technical discipline
• Good knowledge of JavaScript, JSON, Relational/NoSQL DB,
• Experience in writing modular/reusable code using JavaScript frameworks like Node JS, Express JS etc.
• Knowledge of Restful Web Services
• Understanding of OOPS, Data Structure, and Algorithms
• Knowledge of Python will be a plus point.
• Good Analytical and Problem-solving skills
• Knowledge of source control tools, preferably GIT
• Familiar with Agile methodologies

- B.Tech/B.E (preferably in Computer Science Engineering)
- 7+ years of hands-on programming experience in building data-driven REST APIs, services & platforms using advanced Java frameworks like Spring, Redis, Node.js etc. with deep focus on integration & scale.
- We also look for hands-on experience with Mysql, Elasticsearch (or Solr) and Nosql stores.
- Our evaluation starts with focus on computer science fundamentals, data structures & algorithms.
- You will have been learning new technologies every week and prefer folks who can use golang/rust for backend development and are familiar with equivalent data stores, index stores and pub-sub technologies.
Basic Qualifications
- Solid knowledge of algorithms/data structures is a must
- Strong Java software development experience – with a focus on Java 8 & 9
- Experience with NoSql databases – ideally with MongoDB
- Experience implementing REST apis – ideally with JAX-RS
- Experience with Reactive Programming – ideally with RxJava
- Experience implementing unit tests
Preferred Qualifications
- Experience developing applications in fintech or established financial institutions
- Experience with microservice architectures
- Experience developing systems that can scale to large amounts of data
- Experience working in Agile Scrum
- Experience working on a globally distributed team
Our client is a revolutionary Educational services platform, that brings in innovation and expertise in their ways of learning. Awarded as one of the best Google apps of 2017, the app provides students with a variety of online courses that cover K12 subjects, Entrance exams, Engineering and FInance stream topics, as well as Self-help notes.
Their unique and simple AI based site and app feature 500+ courses, nearly a lakh videos and tests, and also imparts strength and weakness analysis for the students to improve their knowledge base. The 5yr old organisation is one of the most loved ed-tech platforms that reaches more than 4.5Mn registered users.
- Planning and implementing company's application and data model structures for scalability.
- Maintaining central databases, ensuring high performance, and responding to requests from the front-end.
- Developing reusable code and libraries for future use. Building for new features and maintaining the present ones.
- Implementing comprehensive security and data protection.
- Has 2-5 years of experience working on a growth stage product, where they first scaled from 0 to 1 and then 1 to n.
- You have studied Computer science (or a similar degree) from a Tier 1 college OR have a great set of experiences working at products that scaled massively.
- You understand product and database architecture like you understand basic Maths and have worked on it for 3 to 7 years. Further, you know how to optimise AWS/ GCP for both efficiency and cost.
- You have experience in managing a team and setting up the best processes / practices (1yr+ Engineering Manager experience)
- You are deeply driven for creating an impact. You obsess over doing things the right way, and you enjoy writing beautiful code.
- Though technology stack is not the primary concern, we would value some experience in C#/ Visual Studio, RDS/ MySQL, ElasticSearch, System Architecture and general AWS solutions.
- Ownership: Absolute ownership of the product and your code, with relentlessness to deliver with speed and precision.
- Dynamic & Resourceful: Should be comfortable in dealing with lots of changes in a fast paced environment. Super willing to learn new technologies and systems. And resourceful and inventive in the face of every problem.
- Deep Love for coding: You write code because you love doing it and not just because it's a job for you.
- Perfection/ Obsession/ Hygiene: You deeply understand & achieve perfection in even the 'small' features. And you deeply care about the quality of your code.
- Good eye for usability & design and willing to put-in extra effort for delivering the best user experience.
- Creating Algorithms that can change the game: Should understand requirements and design algorithms accordingly.
- Driven by Data: Strong analytical and troubleshooting skills leveraging/finding all data available.
- Team player: Keeps the team over themselves. Has a knack for influencing without being authoritative. Goes out of the way to help wherever the team needs them.

Looking for a proficient Backend Engineer - JAVA for a leading E-Commerce Company.
- Proficient in Java, with a good knowledge of its ecosystems
- Great OO skills, including strong knowledge in design and architectural patterns
- Skill for writing reusable Java libraries
- Experience with Play Framework for Java
- Experience with JavaScript & frameworks like AngularJS
- Knowledge of concurrency patterns in Java
- Familiarity with concepts of MVC, JDBC, and RESTful
- Basic understanding of JVM, its limitations, weaknesses, and workarounds
- Implementing automated testing platforms and unit tests
- Working knowledge of NoSQL (preferably MongoDB)
- Proficient understanding of versioning tools, such as Git
- Desire to contribute to the wider technical community through collaboration
- Ability to quickly grasp any new technologies
- Strong communication and collaboration skills







