
Senior Backend Developer
at Its a product based Company and is into Ecom.
Must have experience on Java, Spring MVC / Boot, Hibernate / MyBatis
- Must have experience on building large scale application
- Must have experience on RESTful Web-Services
- Must be good in problem solving, Data structures and Algorithms.
- Strong understanding of Web Architectures, E-commerce solutions
- Strong understanding of any MySql / Postgresql
- Strong understanding of any Redis / Memcached / Mongodb / Elasticsearch
- Hands-on experience on GCP / AWS would be an added advantage
- Hands-on experience on Kubernetes / Docker would be an added advantage
- Basic knowledge of version control system like Git / Mercurial / Bitbucket
- Writes well managed and clean codes

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A primary source of raw materials for manufacturers globally. A raw material sourcing platform with a mission to be the primary source of raw materials for manufacturers globally. Their cross border supply chain and tech solutions ensures manufacturers have access to the best quality raw materials at the right price.
Job Description
As a Backend Engineer you will be responsible for creating REST APIs which are used to drive the User Interface. Given the nature of the application, these APIs need to be very efficient and high performing.
This requires optimizing queries for faster execution and introducing database changes that may be required. We are looking for individuals with great attention to detail, who are genuine, confident, committed and not only passionate about technology, but excited to work in a fun and friendly start-up environment. T
he ideal candidate will be passionate about technology and GETTING IT DONE.
Responsibilities include:
Develop, test, implement and maintain application software
Take part in software and architectural development activities
Debug application issues and helping support respond to client queries
Participate in application development meetings
Provide accurate estimates, clearly communicate status of tasks and identification of risks
Commitment to accomplishing the task at hand and identify the fastest and most reliable way to solve a problem
Performance tuning of application code at different service levels
Interact with customers of the application and help address issues reported
ESSENTIAL SKILLS / EXPERIENCE REQUIRED
- Bachelor's degree in Computer Science or equivalent
- 1-3 years of experience with Java and Spring frameworks.
- Having good knowledge of a scripting language like python is a plus
- Experience with Spring and Hibernate/ ORM
- Understanding of relational databases and normal forms
- Understanding of NoSQL / RDBMS (Mongo or Postgres) and ability to write optimized and high-performing queries
- Strong understanding of Java concurrency, concurrency patterns, experience building thread-safe code
- Experience building RESTful web services
- Strong written and verbal communication skills
- Strong interpersonal skills and time management skills
- Strong problem-solving and analytical skills
- Experience with GIT as a VCS, Unix-based systems
- Experience with NoSQL Database is a plus Following are a set of 'good to have' skills
- React AWS Bitbucket, JIRA
Oister Global (www.oisterglobal.com) is India’s premier Alternative Assets Manager. We combine robust diligence, deep domain expertise, and an extensive network to create high quality private market opportunities for our investors.
We are seeking a Senior Backend Developer who will be pivotal in architecting and developing scalable, reliable backend systems from scratch. You will work closely with product managers, designers, and other engineers to build new products, design backend architectures, and ensure high performance and responsiveness of the systems. This role requires strong backend fundamentals, cloud experience, a deep understanding of databases, and a passion for system design and architecture.
Key Responsibilities:
● Product Development: Architect, design, develop, test, and deploy new backend products and features from scratch.
● System Design: Take ownership of system design and architecture decisions for new modules, ensuring scalability, reliability, and security. ● API Development: Build efficient and reusable APIs and backend services using Node.js.
● Database Management: Design data models, optimize queries, and manage MongoDB clusters efficiently.
● Cloud Management: Deploy, maintain, and optimize services on AWS, ensuring high availability and performance.
● Best Practices: Maintain coding standards, ensure code reviews, and champion best practices in security, testing, and maintainability.
● Collaboration: Work closely with frontend developers, product managers, QA, and other cross-functional teams to define, design, and ship new features.
● Performance Optimization: Monitor system performance and ensure system uptime and responsiveness.
● Mentorship: Provide guidance and mentorship to junior developers as required.
● Documentation: Maintain thorough documentation of systems, processes, and best practices. Must-Have
Qualifications:
● Education: Bachelor’s degree in computer science, Software Engineering, or a related technical field.
● Experience: 4–5+ years of hands-on backend development experience.
● Expertise in: Node.js (Express.js, Nest.js or similar frameworks) MongoDB (including indexing, replication, sharding concepts) AWS Services (EC2, S3, Lambda, RDS, API Gateway, CloudWatch, IAM, etc.) Proficient in: System design principles Microservices architecture Event-driven architecture Strong understanding of: RESTful APIs.Authentication and authorization best practices (OAuth, JWT) Experience with: CI/CD pipelines Docker and containerization principles Hands-on experience in: Building scalable, distributed, and fault-tolerant systems Good knowledge of : Logging, monitoring, and debugging distributed applications
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 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.
Java Developer Requirements
· Minimum 7 to 15years of experience in Java/J2EE
· Outstanding skills in Java Struts, JSP, Hibernate
· Capability to understand DB design, SQL queries
· Experience in JavaScript, JQuery, JSON and AJAX
· Strong Object Oriented Analysis and Design skills
· Knowledge in source version control such as GIT
· Understanding on Agile methodologies
No of Opening: 7
Location: Chennai/Madurai (WFO)
· Degree in Computer Science or related field.
· Experience with user interface design, database structures, and statistical analyses.
· Analytical mind-set and good problem-solving skills.
· Excellent written and verbal communication.
· Good organizational skills.
· Ability to work as part of a team.
· Attention to detail.

Founded in 2012,leader in high-assurance digital identity verification technology. Named to Forbes’ 2019 AI 50 list as one of America’s most promising AI companies, and a recent winner of API World’s Best Data API, technology applies artificial intelligence and machine learning techniques with trusted online/offline data intelligence from email, address, phone, IP, social media and the broader Internet to verify identities in real-time. Customers include three of the top five U.S. banks, seven of the top 10 U.S. card issuers, as well as the majority of leading digital banks, lenders and insurers across the U.S. We are funded by some of the world's best investors and entrepreneurs including Scale Venture Partners, Commerce Ventures, Work-Bench, Santander InnoVentures and Two Sigma Ventures.
The only way we can further our mission of becoming the single, trusted source of identity verification and eliminating identity fraud is by building the best team on the planet. This is where you come in!
We are hiring Software Engineers across all levels in Chennai!
What You'll Be Doing:
- You will partner with our globally distributed cross-functional teams (Product, Infrastructure, Engineering, Data Science) to conceptualize and develop new features and products in an Agile environment.
- You will own end-to-end delivery of software components all the way to production, owning team features or systems.
- You will be building web services and REST APIs at scale, and producing high-quality results with direct business impact.
- You will be monitoring and improving existing deployments, ensuring that we are continuously improving our product.
- You will be assisting our QA and support team in triaging and resolving production issues and addressing bugs.
What You'll Bring:
- You are interested in our tech stack (Java or Scala, SQL Databases, NoSQL, Microservices, and AWS)
- You will have strong computer science fundamentals: data structures, algorithms, various programming languages, distributed systems, etc.
- You understand engineering best practices and seek to improve engineering standards, tooling and processes.
- You write “good code” - easily understandable, secure and testable!
- You are comfortable helping drive technical decisions within our Engineering team.
- You have experience building applications at scale.
Perks & Benefits:
- Competitive base salary
- Equity - every employee is a stakeholder in our enormous upside
- A tech-first company culture driven by entrepreneurial thinking and talent
- A great team working in unison towards the same mission
- Transparency is what our product is built on—and so is our culture
- Daily catered lunch and snacks
- Generous health insurance for employees and dependents
- Flexible work schedule and work-from-home options
- Flexible PTO
We are an equal opportunity employer and value diversity of all kinds at our company. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.
4 to 12 years of experience in IT Industry with 3+ years of expereince in Java, microservices skills
Job Description
- Design & implement backend APIs
- Mentor junior developers technically.
- Actively work to reduce tech debt in the backend
- Work towards more stability & scalability of the backend
- Tech stack - Java, AWS, Aurora etc.
Eligibility
- 4-8 years of product company experience
- OOP implementation experience. Programming language does not matter. We use Java internally but have hired folks from non Java background.
- Hands on experience in SQL, Dynamo DB, Postgres etc preferred.
- Prior experience building REST APIs
- Advanced understanding of AWS stack
- Prior knowledge of solving problems at scale.
Diagnal Technologies is a fully owned subsidiary of Diagnal Inc, Hong Kong. It’s a product company focusing on media and entertainment clients, creating Video on Demand apps for their customers. We are a team of OTT video solution specialists helping our customers build the new digital media industry in Asia Pacific and beyond. We create viable revenue generating video streaming products, enable our customers to gain business and operational insights through big data analytics and empower them to engage with their users more effectively through targeted marketing campaigns. Started its Development Center in Technopark Phase III campus and focusing on Indian and International clients.
For further details please refer our website
LinkedIN :
Job Description :
- 2 or more years of experience of server side web systems engineering and middleware in a project services or product engineering organisation
- Hands-on development experience using JavaScript on the Server Side with Node.js and associated frameworks.
- Published sites/systems that are now online
- Self motivation and ability to manage your own time to get the job done at the high international quality levels we expect
- An engineering Degree in computer science or equivalent practical experience
- A solid understanding of networking, storage, operating/browser systems engineering as well as application/software systems performance optimisation and third party systems integration
- Hands on experience with Amazon Web Services
- Prior experience working within the Media, E-commerce, Telecommunications or similar large scale consumer facing industry
First round will be a Machine test and Aptitude, sharing it with this mail, which has to be completed in 2 days.This will be followed by technical discussion, CEO round and HR discussion.Hiring process will take 5-7 working days post completion of M/C test
Nice to have: python
Must frameworks and technologies: Springboot, kafka, MQTT, docker/kubernetes, REST APIs
Persistence layer: MongoDB, Elastic Search, Any GraphDB (Neo4j/Arango), SQL, HBase
Must have: Exposure in large scale architecture (Concept of queues, micro services, functional programming)
Must have: Strong Data structure and design principles
Expert in developing Node.js applications, Strong understanding of NPM and modular application development skills building, Proficiency and hands-on experience with Node.js, Express, Sockets, MongoDB/Elasticsearch/Redis/MySQL, Apache Kafka/Google PubSub, Experience of working in MEAN Stack is a plus)









