Full Stack Developer

Backend Engineer (MongoDB / API Integrations / AWS / Vectorization)

Position Summary

We are hiring a Backend Engineer with expertise in MongoDB, data vectorization, and advanced AI/LLM integrations. The ideal candidate will have hands-on experience developing backend systems that power intelligent data-driven applications, including robust API integrations with major social media platforms (Meta, Instagram, Facebook, with expansion to TikTok, Snapchat, etc.). In addition, this role requires deep AWS experience (Lambda, S3, EventBridge) to manage serverless workflows, automate cron jobs, and execute both scheduled and manual data pulls. You will collaborate closely with frontend developers and AI engineers to deliver scalable, resilient APIs that power our platform.

Key Responsibilities

• Design, implement, and maintain backend services with MongoDB and scalable data models.
• Build pipelines to vectorize data for retrieval-augmented generation (RAG) and other AI-driven features.
• Develop robust API integrations with major social platforms (Meta, Instagram Graph API, Facebook API; expand to TikTok, Snapchat, etc.).
• Implement and maintain AWS Lambda serverless functions for scalable backend processes.
• Use AWS EventBridge to schedule cron jobs and manage event-driven workflows.
• Leverage AWS S3 for structured and unstructured data storage, retrieval, and processing.
• Build workflows for manual and automated data pulls from external APIs.
• Optimize backend systems for performance, scalability, and reliability at high data volumes.
• Collaborate with frontend engineers to ensure smooth integration into Next.js applications.
• Ensure security, compliance, and best practices in API authentication (OAuth, tokens, etc.).
• Contribute to architecture planning, documentation, and system design reviews.

Required Skills/Qualifications

• Strong expertise with MongoDB (including Atlas) and schema design.
• Experience with data vectorization and embeddings (OpenAI, Pinecone, MongoDB Atlas Vector Search, etc.).
• Proven track record of social media API integrations (Meta, Instagram, Facebook; additional platforms a plus).
• Proficiency in Node.js, Python, or other backend languages for API development.
• Deep understanding of AWS services:
• Lambda for serverless functions.
• S3 for structured/unstructured data storage.
• EventBridge for cron jobs, scheduled tasks, and event-driven workflows.
• Strong understanding of REST and GraphQL API design.
• Experience with data optimization, caching, and large-scale API performance.

Preferred Skills/Experience

• Experience with real-time data pipelines (Kafka, Kinesis, or similar).
• Familiarity with CI/CD pipelines and automated deployments on AWS.
• Knowledge of serverless architecture best practices.
• Background in SaaS platform development or data analytics systems.

• Strong experience in Core Java, Multi-Threading, data structures (List/Map/Set) and unit testing
• with (Junit, Mockito)
•  Strong experience with Spring Framework (Spring MVC, Spring REST, Spring Data), ORM
• frameworks (JPA, Hibernate) and RDBMS (Oracle/MySQL/Postgres)
•  Strong experience in applying Object-Oriented design principles and Design Patterns
•  Good knowledge of Multi-Tier architecture, Micro Services architecture and Service Oriented
• Architecture 
•  Exposure to AWS Cloud, NoSQL Database (Mongo, Cassandra), Message Broker (Active
• MQ/RabbitMQ/Apache Kafka) and Big Data Technologies (Hadoop/Hive/Spark)
•  Additionally, must possess capability to review code, produce technical specification document
• and knowledge of code quality tools (PMD/FindBugs/Sonar)

Greetings!

Wissen Technology is hiring for Java developers/Lead.

Required Skillset

• 6+ years of industrial experience
• Java and related frameworks.
• Experience in Core Java 1.8 and above, Data Structures, OOPS, Multithreading, Microservices, Spring and Swift Payments
• Exposure on Fintech domain is mandatory
• Should have the ability to analyse, design, develop and test complex, low-latency client-facing applications.
• Good development experience with RDBMS
• Good knowledge of multi-threading and high volume server side development
• Excellent problem solving and coding skills in Java
• Strong interpersonal, communication and analytical skills.

Company Profile:

Company Name : Wissen Technology

Group of companies in India : Wissen Technology & Wissen Infotech

Work Location - Bangalore

Website : www.wissen.com

Wissen Thought leadership : https://www.wissen.com/articles/

LinkedIn: https://www.linkedin.com/company/wissen-technology

About us:

TAPPP(https://tappp.com/) is building the next-generation digital platform by leveraging cell-based architecture to integrate technologies like Artificial Intelligence, Rules, Workflows, Microservices, FaaS (Function as a Service), Micro-frontends, and Micro apps to create a highly extensible and cutting-edge technology platform that brings together sports fans with broadcasters, sports teams, and sportsbooks to create a marketplace for all aspects of sports and we are available across platforms via the Web, Mobile, Roku, and Tablets.

Building out this brand presents significant product and engineering challenges. At the center of solving those challenges is the TAPPP Product Engineering team which is responsible for the TAPPP product end to end.

TAPPP is led by a very able leadership team drawn from Industry leaders from companies like ESPN, Amazon, Blackhawk, Kargocard, Visa, and

many others.

The organization is flat, processes are minimal, individual responsibility is big, and there is an emphasis on keeping non-productive influences out of the everyday technical decision-making process. Upholding these philosophies will be imperative as we execute our aggressive plan of global expansion over the next 2 years.

Who are we looking for:

A coding enthusiast who loves writing elegant code and developing software systems.

As a senior java developer, you will be a part of the core product development team that is responsible for building high-performant components of the TAPPP platform.

Your responsibility:

• You will be responsible for designing, coding, reviewing, testing, and bug-fixing different modules of the software product that needs to work seamlessly across different environments.
• Write production-quality code in Java, J2EE, and Spring
• You will work in an agile team, working on the TAPPP revolutionary platform. You‘ll be using cutting-edge solutions (Spring Boot, Docker, Kafka, Redis, Continuous Delivery) for creating and maintaining high-load distributed services that are part of our messaging platform.

Mandatory technical skills:

• Hands-on experience with
• Java 1.7+
• RDBMS (MySQL/PostgreSQL)
• JPA (Hibernate or any other ORM framework)
• Spring Boot, Spring MVC, Spring Security
• Hands-on experience in writing extensible RESTful APIs
• Hands-on in Java development (all facets of development) with a sound understanding of OOAD.
• Should have excellent debugging, code review, and design review skills
• Should have a sound understanding of a Microservice based architecture

Good to have technical skills:

Kafka

GraphQL

Redis

AWS (ECS, Cloudwatch)

Other

• Strong independent contributor
• Comfortable working in a start-up environment

The position is based in Pune, India.

Engineering Lead (Backend/Full stack)

About

It is a mission-oriented high-growth fintech startup building payment &

lending products to simplify education payments. Jodo’s suite of products make education payments convenient & affordable for parents while simplifying & streamlining fee collections for educational institutes. Jodo aims to be a category-defining company with a mission to be a

trusted partner to parents in fulfilling their aspirations for their kids’ education.

We are backed by marquee VC investors – Tiger Global, Elevation Capital and Matrix Partners – to realize this mission. It is started by three co-founders who have a pedigreed education

(IIT/IIM) and professional background (Nomura, Goldman Sachs, Morgan Stanley, Barclays, Matrix Partners).

🎬Job Description:

We are looking for an Engineering Leader with a focus on building maintainable and scalable applications. The Lead will be responsible for the design and development of Jodo’s fee payments platform and be owning one of the products/verticals. Leads will be closely working

with Product Managers and Founders to execute projects from ideation to completion. As a hands-on Team Lead, you will take ownership of services/systems and guide a team of

developers.

📈Key Responsibilities

● Own and drive the development of one or more of Jodo’s products

● Take the lead in the design and development of the backend platform

● Mentor a team of developers, promote collaboration and engagement, and promote practices that improve the developer experience

● Work closely with Product Managers and Founders to brainstorm requirements and prioritize

● Own quality - actively participate in code reviews

● Own reliability - continuously monitor Production Health, proactively fix production issues

● Own execution - Plan and delegate work for the team, optimize for speed of development and incremental delivery

📃Requirements

● 6+ years of hands-on experience in application development

● 1+ years of leading a team

● Experience in working with distributed systems

● Proficient in building Microservices/RESTful APIs with any modern tech stack

● Working knowledge of relational and nonrelational databases

● Prior working knowledge of Python/Django is a big plus

● Familiarity with modern CI/CD tools

● Knowledge of AWS or any other Cloud Platform services

● Champion code quality and drive best practices

● Ability to analyze and convert business requirements into technical requirements

● Self-starter and ability to take the ownership

● Prior experience working in a startup environment is great to have

● Excellent communication and interpersonal skills

🤩Benefits

● Becoming a part of the early core team

● Competitive salary

● Work with colleagues from strong backgrounds & hungry to succeed

● Opportunity to interact with and learn from high-pedigree investors & mentors -

○ VCs: Elevation Capital (erstwhile SAIF Partners), Matrix Partners

○ Select angel investors: Kunal Shah, Nithin Kamath, Amit Ranjan

🔎What are we looking for?

● Self-starter with a high sense of ownership → Comfortable to work with minimal

supervision

● Hungry to learn and grow → Passion to learn & be a better version of oneself; motivated to succeed

● Bias for action → Have the temperament to experiment and execute in uncertainty

● Hustler → Ability to generate resources to solve a problem

● Intellectual honesty → Always seeking and presenting truth irrespective of personal

POV or beliefs

● Mission-oriented → Deeply care about delivering value and making an impact on customer’s lives

✅Key Details

● Role: Engineering Lead

● Location: Bengaluru

● Compensation: Negotiable based on candidate profile (structured as Fixed + ESOPs)

● Date of Joining: ASAP

Responsibilities

• Develop, deploy, and maintain scalable products
• Participate in code reviews, and design discussions to ensure code quality and distribute knowledge
• Pair with team members for functional and non-functional requirements to write well-crafted, well-tested, readable, and maintainable code.
• Help to define roadmap and architecture based on technology and business needs
• Understand business requirements and work closely with the business to provide solutions

Eligibility

• Strong expertise in Backend Python Development with skills to create APIs, integrate the functions into UI, and store and retrieve data from a variety of databases.
• Strong experience with Django/Flask.
• Strong experience in writing unit tests.
• B.Tech/B.E (Preferred CSE)

Designation: Magento Developer / Sr. Magento Developer

Experience: 3+yrs

Location: Anywhere in India ( WFH for now for next 8-10months)

No. of Positions: 2

Notice Period: Immediate / Less than 30days (Do not share which is above this notice period)

Job Description:

Magento Developers with 3+ years of experience

1) Should have hands-on experience in Magento module/extension development

2) Should be able to quickly understand existing custom modules in Magento and customize and manage it further.

3) Hands-on experience in developing and consuming API/REST calls both inbound and outbound within Magento

4) Should know how to develop WebService/API/REST calls as per Magento architecture, coding standard

5) Troubleshooting integration issues from API/REST calls.

6) Excellent knowledge of PHP, JavaScript, HTML5, and CSS.

7) Good working experience on MySQL, developing complex SQL queries, design tables/database for complex business models

8) Knowledge of MVC, OOPs, Design Patterns – especially the design patterns used in Magento

9) Knowledge of Magento theming / UI components is preferred.

10) Hands-on experience with Magento 2 Porto Theming

11) Knowledge of deployment process in Cloud, especially for Magento

12) Should be competent and confident to speak up in team meetings, discussions, war rooms

13) Good command of English language

14) Should be able to work under minimal supervision

15) Should be able to coordinate with other teams and collectively solve issues.

16) Should be able to work independently as well as team

17) Candidate should have prior work experience in Magento Enterprise.