Blockchain Developer

Job Overview

Architect and build scalable, high-performance backend systems while working on mission-critical platforms that process real-time market data and portfolio analytics. The role also involves leveraging Generative AI capabilities to enhance data intelligence, automation, and user-facing features, while ensuring regulatory compliance and secure financial transactions.

Key Responsibilities

• Design, develop, and maintain scalable backend services and APIs using NodeJS and Python
• Build event-driven architectures using RabbitMQ and Kafka for real-time data processing
• Develop and manage data pipelines integrating PostgreSQL and BigQuery for analytics and warehousing
• Integrate and deploy Generative AI models (LLMs, embeddings, AI APIs) into backend systems for automation, insights, and intelligent workflows
• Design AI-powered features such as recommendation systems, document processing, or conversational interfaces
• Ensure system reliability, security, and low-latency performance for mission-critical systems
• Lead technical design discussions, conduct code reviews, and mentor junior engineers
• Optimize database queries, implement caching strategies, and improve overall system performance
• Collaborate with cross-functional teams to deliver end-to-end product features
• Implement monitoring, logging, and observability solutions

Required Skills and Qualifications

• 2+ years of professional backend development experience
• Strong expertise in NodeJS and Python for production-grade applications
• Proven experience building RESTful APIs and microservices architectures
• Experience working with Generative AI frameworks/APIs (OpenAI, LangChain, vector databases, prompt engineering)
• Understanding of integrating LLMs into production systems (RAG, embeddings, fine-tuning basics)
• Strong proficiency in PostgreSQL, including query optimization and schema design
• Hands-on experience with RabbitMQ and Kafka
• Experience with BigQuery or similar data warehousing solutions
• Solid understanding of distributed systems, scalability patterns, and high-traffic applications
• Strong knowledge of authentication, authorization, and security best practices
• Experience with Git, CI/CD pipelines, and modern development workflows
• Excellent problem-solving and debugging skills
• Exposure to fintech or financial services, cloud platforms (GCP/AWS/Azure), Docker/Kubernetes, caching tools (Redis/Memcached), and regulatory requirements (KYC, compliance, data privacy) is a plus

Apply directly at: https://wohlig.keka.com/careers/jobdetails/136351

Job Title: Java Developer (Full-time)

Location: Pune (Onsite)

Experience Required: 3+ Years

Working Days: 5 Days (Mon to Fri)

Key Responsibilities:

• Design, develop, and deploy scalable microservices using Java and Spring Boot.
•  Implement RESTful APIs and integrate with external systems and databases.
• Build and manage services on AWS Cloud using components like ECS, Lambda, S3, RDS,
• and API Gateway.
• Collaborate with DevOps to integrate CI/CD pipelines for automated builds, tests, and
• deployments.
• Ensure application performance, reliability, and security in a cloud-native environment.
• Participate in code reviews, troubleshooting, and performance optimization.
• Work closely with architecture, QA, and product teams to deliver high-quality solutions.

Required Skills & Experience:

• Strong proficiency in Java, Spring Boot, and microservice architecture. 
• Hands-on experience with AWS Cloud services (ECS, EKS, Lambda, RDS, CloudWatch,etc.).
•  Knowledge of Docker, Kubernetes, and CI/CD tools (Jenkins, GitLab, or AWS
• CodePipeline).
• Experience with REST APIs, JSON, and message brokers (Kafka, RabbitMQ, or SNS/SQS).
• Proficiency in SQL and experience with relational databases (Oracle, MySQL, or
• PostgreSQL).
•  Familiarity with security best practices, monitoring, and logging in the cloud.

We are looking for an experienced SDE-3 Backend Engineer (Node.js) to lead the backend engineering pod responsible for third-party integrations, observability, and engineering support.

The role requires someone who is technically strong in Node.js, TypeScript, databases, and backend system design, and who can remain hands-on while guiding engineers and working closely with internal teams and external partners.

Key Responsibilities

• Own delivery, quality, and production stability for third-party
• integrations, observability, and engineering support.
• Own technical design, architecture decisions, code reviews, and delivery quality for services owned by the pod.
• Drive strong engineering practices across design reviews, code reviews, testing, documentation, release discipline, and operational readiness.
• Design, build, and maintain scalable backend services and APIs using Node.js and TypeScript.
• Own integrations with banks, payment partners, fintech partners, and other external systems.
• Ensure partner integrations are reliable, secure, well-documented, and easy to support.
• Build monitoring, alerting, dashboards, and visibility across critical services and partner workflows.
• Create and maintain runbooks, SOPs, dashboards, and troubleshooting guides for critical services and partner workflows.
• Drive timely resolution of production issues, partner issues, and internal escalations.
• Perform RCA for incidents and ensure long-term fixes are implemented.
• Mentor junior engineers and improve engineering practices within the pod.

• Strong hands-on experience in Node.js and TypeScript backend development.
• Strong database skills, including schema design, query optimization, indexing, transactions, and performance tuning.
• Strong understanding of building scalable, performant, resilient, and fault-tolerant backend systems.
• Experience with third-party integrations, webhooks, callbacks, retries, timeouts, and error handling.
• Strong debugging and production issue resolution skills.
• Experience with logging, monitoring, alerting, dashboards, and observability tools is preferred.
• Good understanding of secure API design, authentication, authorization, and data protection.
• Exposure to AWS, Docker, Kubernetes, CI/CD, Grafana, Prometheus, ELK, or similar tools.
• Ability to guide and mentor engineers while remaining hands-on.
• Ability to drive delivery, manage technical execution, and ensure quality within the pod.
• Strong communication skills for working with internal teams and external stakeholders.

As a Backend-End developer, you will be responsible for building the server side of the web applications. You should have the ability to write clean code, modular, and loosely coupled code by the use of design patterns. you should be able to break down and architect complex software. You will be building high scale products on that account good to have experience in building highly scalable and reliable systems.

What will you do at Medibuddy?

• Build and manage REST API stack for MediBuddy Mobile and Web Apps.
• Design, Develop and architect Instant Messaging Engines.
• Low level Design [Classes, Code, DB design]
• Deployment and prod Env Monitor
• High level Design [System architecture, Caching, Queue] [Mid level]
• Integrate with ML and NLP engines , Build Chatbots.
• Data analytics, User Analytics & App Analytics.
• Build Web Applications & Dashboards.
• DevOps, DBMS & Scaling on AWS.
• 
  

What makes you a match for us? 

Academic background: B.E/B.Tech from top ranked colleges.

● 3+ years of experience with building backend applications.Web Apps & Analytics.

● Experience in deploying applications at scale in production systems.

● Experience in building and managing API endpoints for multimodal clients.

● Enthusiasm to learn and contribute to a challenging & fun-filled startup.

● Knack for problem solving and follow efficient coding practices.

● Hands on experience with 

Tech stacks ::NodeJS, Nest.js, Express JS, Python - Django

SQS,RabbitMQ, SNS

Databases/Datastores:: Mysql, Redis, Memcache, Mongodb

Logging:: ELK,Cloudwatch

AWS:: RDS, ECS, EBS, Cloudwatch, ELK, Redshift

Protocols:: HTTP, XMPP, MQTT, Socket.io, TCP

Version Control: Git

What does Engineering do @ MediBuddy?

To deliver high quality products, the Engineering team has over 190+ engineers with skill sets across Android, iOS, NodeJS, .NET, Backend, Fullstack, QA, Data Science, Data Engineers, Security, DevOps etc. We use microservices architecture on AWS cloud. Our Engineering teams are organized as Pods with Weekly sprints. We solve a variety of user, product and business problem statements at scale under one roof, which is very unique. 

We're simultaneously building - 

1. Digital communication stack (video, chat and call consultations with Doctors) Ecommerce stack (medicine delivery) 
2. Hyperlocal stack (lab tests @ Home) 
3. Transactions stack (for all healthcare transactions) 
4. Booking of services stack (for in clinic doctor consultations) 
5. Data security, data science stack (NLP, imaging, video, audio based data problems and data analytics) 
6. B2B stack (for large corporates to provide healthcare to employees and large insurers to provide healthcare services to policyholders)

Job Summary:

We are seeking a dynamic and highly skilled Full Stack Developer with 3-5 years of experience to join our client's team. The ideal candidate will be working with a leading MNC client in the health insurance domain. This role is based in Gurugram and requires candidates to work from the office, Monday to Friday. You will play an integral role in developing and enhancing applications using Node.js, TypeScript, PostgreSQL, and MongoDB.

Responsibilities:

• Design, develop, and maintain scalable applications using Node.js and TypeScript.
• Build and optimize RESTful APIs and backend services.
• Collaborate with cross-functional teams to deliver high-quality products and services.
• Work with PostgreSQL and MongoDB databases for efficient data management and retrieval.
• Ensure the performance, quality, and responsiveness of applications.
• Troubleshoot, debug, and upgrade existing systems and platforms.
• Implement best practices for security, code quality, and performance optimization.
• Participate in code reviews and provide mentorship to junior developers.

Requirements:

• Experience: 3-5 years of hands-on development experience with Node.js, TypeScript, PostgreSQL, and MongoDB.
• Technical Skills:
• Proficiency in Node.js and TypeScript for building scalable web applications.
• Strong experience working with PostgreSQL and MongoDB databases.
• Hands-on experience in building RESTful APIs and microservices architecture.
• Knowledge of best practices in application development, security, and performance tuning.
• Familiarity with version control tools like Git.
• Preferred:
• Experience in the health insurance or fintech domain.
• Ability to work in an agile environment with fast-paced deliverables.
• Excellent communication and collaboration skills.

Soft Skills:

• Strong problem-solving skills and ability to troubleshoot complex issues.
• Ability to work in a team and independently when required.
• Adaptability and willingness to learn new technologies.

Backend Architect

Experience - 12+ yrs

About Wekan Enterprise Solutions

Wekan Enterprise Solutions is a leading Technology Consulting company and a strategic investment partner of MongoDB. We help companies drive innovation in the cloud by adopting modern technology solutions that help them achieve their performance and availability requirements. With strong capabilities around Mobile, IOT and Cloud environments, we have an extensive track record helping Fortune 500 companies modernize their most critical legacy and on-premise applications, migrating them to the cloud and leveraging the most cutting-edge technologies.

Job Description

We are looking for passionate architects eager to be a part of our growth journey. The right candidate needs to be interested in working in high-paced and challenging environments leading technical teams, designing system architecture and reviewing peer code. Interested in constantly upskilling, learning new technologies and expanding their domain knowledge to new industries. This candidate needs to be a team player and should be looking to help build a culture of excellence. Do you have what it takes?

You will be working on complex data migrations, modernizing legacy applications and building new applications on the cloud for large enterprise and/or growth stage startups. You will have the opportunity to contribute directly into mission critical projects directly interacting with business stakeholders, customer’s technical teams and MongoDB solutions Architects.

Location - Chennai or Bangalore

●     Relevant experience of 12+ years building high-performance applications with at least 3+ years as an architect.

●     Good problem solving skills

●     Strong mentoring capabilities

●     Good understanding of software development life cycle

●     Strong experience in system design and architecture

●     Strong focus on quality of work delivered

●     Excellent verbal and written communication skills

Required Technical Skills

●     Extensive hands-on experience building high-performance applications primarily using Node.Js ,(Javascript/Typescript) along with Nest.Js, Express.JS, MongoDB.

●     Hands-on experience with other languages such as .NET/C# or Java or Golang or Python.

●     Strong experience with appropriate framework(s).

●     Well versed in monolithic and microservices architecture and System design experience.

●     Hands-on experience with data modeling on MongoDB (NoSQL) and Relational or NoSQL databases

●     Experience working with 3rd party integrations ranging from authentication, cloud services, etc.

●     Hands-on experience with Kafka or RabbitMQ.

●     Hands on experience with CI/CD pipelines and atleast 1 cloud provider - AWS / GCP / Azure

●     Strong experience writing and maintaining clear documentation

Good to have skills:

●     Experience working with frontend technologies - React.Js or Vue.Js or Angular.

●     Extensive experience consulting with customers directly for defining architecture or system design.

●     Technical certifications in AWS / Azure / GCP / MongoDB or other relevant technologies

• 3+ years of Experience in software Design and development and familiar with technologies - Java, Java-J2EE, Spring Boot, Hibernate, Ajax, REST API, Micro services etc.
• Working knowledge of JVM internals
• Working knowledge of any database (MySQL or HSQLDB)
• Working knowledge of No-SQL database (Mongo or Dynamo DB)
• Working experience with messaging (JMS/RabbitMQ)
• R & D on new advanced cloud-based technologies in a test-driven agile development.
• Knowledge in designing and architecting systems with high scalability and performance requirements.
• Ability to understand infrastructure for performance evaluation and reporting of cloud-based services, namely AWS
• knowledge of key AWS services like EC2, S3, Lambda, CloudWatch etc.
• Certification on AWS Fundamendals
• Excellent communication skills
• ability to effectively articulate technical challenges and solutions
• skilled in interfacing with internal and external technical resources
• Good in debugging problems and mentoring teams on technical front

Job Description :

• 3 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