Java Backend Engineer

Job Title: Graph Database Engineer (Neo4j / Knowledge Graph)

Experience: 4–8 Years (Preferred)

Key Responsibilities

• Design, develop, and optimize graph database solutions using GraphDB technologies.
• Build, maintain, and query graph data models for enterprise applications.
• Develop and manage Knowledge Graphs to support AI and data-driven use cases.
• Design graph schemas, relationships, and ontologies for efficient data representation.
• Collaborate with AI/ML, data engineering, and application development teams to integrate graph-based solutions.
• Optimize graph queries and ensure high performance, scalability, and reliability.

Required Skills

• Strong hands-on experience with Graph Databases.
• Neo4j experience is highly preferred.
• Proficiency in Cypher query language and graph data modeling.
• Good understanding of graph database architecture, indexing, and performance optimization.
• Experience with REST APIs and integrating graph databases with enterprise applications.
• Familiarity with Java, Python, or similar programming languages.

Preferred Skills

• Experience in building and managing Knowledge Graphs.
• Exposure to AI/ML, Generative AI, or Retrieval-Augmented Generation (RAG) solutions using graph databases.
• Knowledge of semantic technologies such as RDF, SPARQL, or OWL is an added advantage.
• Experience with cloud platforms (AWS, Azure, or GCP) is a plus.

Qualifications

• Bachelor's or Master's degree in Computer Science, Information Technology, or a related field.
• Excellent analytical, problem-solving, and communication skills.

Nice to Have

• Experience with GraphRAG, LLM-based applications, or AI-powered knowledge management systems.
• Understanding of enterprise data integration and ontology design.

Job Title : Senior Python Scripting Engineer (Testing)

Experience : 7 to 8 Years

Location : Bangalore

Employment Type : Full-Time

Job Overview :

• We are looking for a Senior Python Scripting Engineer with 4 to 5 Years of advanced Python scripting experience and 2 years of testing experience.
• The ideal candidate will be responsible for developing robust automation scripts, ensuring software quality, and collaborating with cross-functional teams to enhance product reliability.

Key Responsibilities :

• Develop and maintain advanced Python scripts for automation and software development.
• Design, implement, and execute test cases, automation scripts, and testing frameworks to ensure software quality.
• Collaborate with developers and QA teams to identify and resolve software defects.
• Optimize existing scripts and test cases to improve efficiency and accuracy.
• Work on test automation, debugging, and continuous integration pipelines.
• Maintain clear documentation for scripts, test cases, and processes.

Required Skills & Qualifications :

• 7 to 8 Years of overall experience in software development/testing.
• 4 to 5 Years of strong hands-on experience in Python scripting (Advanced Level).
• 2 Years of experience in Software Testing (manual and automation).
• Experience with test automation frameworks like PyTest, Selenium, or Robot Framework.
• Proficiency in debugging, troubleshooting, and optimizing scripts.
• Knowledge of CI/CD pipelines, version control systems (Git), and Agile methodologies.
• Strong problem-solving skills and ability to work in a dynamic environment.

Preferred Skills :

• Experience with cloud platforms (AWS, Azure, or GCP).
• Exposure to performance testing and security testing.
• Familiarity with DevOps practices and containerization (Docker, Kubernetes).

At BigThinkCode, our technology solves complex problems. We are looking for talented back end (node.JS) engineer to join our at Chennai.

Please find below our job description, if interested drop your profile to connect and disucss.

Company: BigThinkCode Technologies

URL: https://www.bigthinkcode.com/

Experience required: 2-3 years

Work location: Chennai

Joining time: Immediate – 2 weeks

Work Mode: Work from office / Hybrid

A skilled Node.js Developer with 2–3 years of experience in building scalable applications using event-driven architecture within distributed systems. The ideal candidate should be comfortable in high-performance backend services and have a strong understanding of asynchronous programming patterns.

Experience or exposure to knowledge embedding and vectorization techniques is a strong plus, especially in the context of modern data-driven or AI-powered systems.

Must have skills:

• Hands on expertise in OOJS, node.js, distributed systems.
• Hands on experience using RabbitMQ, Kafka / Redis and PostgreSQL.
• Event drive architecture (EDA) microservices project experience MUST
• Any programming: Typescript or nodeJS or Golang.
• Hands on experience using docket containers and Kubernetes.
• Aware about Asynchronous and Loose Coupling.
• Familiar with API’s gateway and microservice design patterns.
• Strong understanding of event-driven architecture and non-blocking I/O.
• Experience working with distributed systems and microservices architecture.
• Proficiency in RESTful API design and implementation.
• Experience with databases such as MongoDB, PostgreSQL, or MySQL.
• Experience with containerization tools like Docker and orchestration tools like Kubernetes

Key Responsibilities

• Design, develop, and maintain server-side applications using Node.js
• Build and optimize scalable, event-driven systems in distributed environments.
• Implement asynchronous workflows, message queues, and pub/sub architectures.
• Collaborate with cross-functional teams to define and deliver backend solutions.

Good to Have:

• Experience with knowledge embedding and vectorization techniques.
• Familiarity with vector databases (e.g., Pinecone, Weaviate, FAISS).
• Understanding of cloud platforms (AWS, Azure, or GCP)

Why Join Us:

• Collaborative work environment.
• Exposure to modern tools and scalable application architectures.
• Medical cover for employee and eligible dependents.
• Tax beneficial salary structure.
• Comprehensive leave policy
• Competency development training programs.

Requirement :

• Good knowledge of Java and Spring F/W (Spring Boot, Spring Security, Spring ORM, Spring Rest, Spring Cloud)
• Good knowledge of relational database design and query via both SQL and ORM (hibernate, spring data)
• Good knowledge of ElasticSearch or other document-oriented database
• Good knowledge of Microservice architecture, including REST API design
• Good knowledge of asynchronous data pipelines using Kafka or AWS SNS/SQS or similar modern messaging framework
• Good knowledge of AWS or other public cloud environment
• Hands-on experience with Redis Cache, Memcache or Ehcache
• Good knowledge of domain-driven design is a huge plus
• Web services & API standards (REST/OAuth/JSON)

• 3 - 6 Years of Experience in Product Development - Experience in Java (8 or 11+), Spring (4+), Spring Boot (2.4+) is a must.
• Understands requirements well and comes up with an efficient design
• Develops complex, well-backed and bug-free products.
• Estimates accurately.
• Takes well-reasoned tech decisions keeping in mind goals and trade-offs
• Become a go-to person in more than one area.
• Provide technical mentoring to team
• Communicates clearly, gets clarifications, and establishes expectations for all parties
• Helps establish SDLC best practices and high standards of code quality
• Demonstrates excellent problem solving & debugging skills
• Proactively identifies and resolves issues in requirements, design, and code

Ideal Candidate Profile :

• Solid experience in Java, Spring Boot, hibernate is a must.
• Solid experience in Java Multithreading, Streams, and Lambda Functions is a must.
• Solid understanding of Apache Products.
• Should have experience in cloud computing (AWS is desired).
• Has an ability to quickly learn and contribute in multiple codebases
• Overcomes roadblocks and requires minimal oversight
• Takes initiatives to fix issues/tech debts before assigned to him/her
• Able to deep dive into the codebase and advise QA of possible regression impact
• Communicates tech decisions through design docs and tech talks
• Has delivered projects with end-to-end accountability
• Keeps track of industry trends and introduces the right tech/tools for a given job
• Excellent understanding of software engineering practices, design patterns, data structures, algorithms
• Experience in product driven organization

• Work on building scalable backend platform for customer & seller apps, brands platform, demand generation platform, supply chain & logistics platform, credit platform and several cross platform software components
• Participate in the process to fundamentally change the food and grocery ecosystem in India, and impact billions of people through technology, mobile, and data science

Requirements:

An ideal candidate for this role is someone who has-

• BE/BTech degree in Computer Science from a top engineering school
• 1-5 years of professional software development experience
• Strong problem solving skills and strong command on object oriented design, data structures, algorithms and other computer science fundamentals.
• Strong coding skills - professional experience in developing production-quality software in Java/Python
• Expertise in Web Services, Service-oriented architecture, Databases, NoSQL, Distributed systems, Cloud Technologies.
• Extreme software engineering skills to design and develop low-latency, high availability, internet-scale web services
• Solid understanding of the full software development life cycle and software engineering best practices
• Ability to understand business requirements and translate them into technical requirements
• Demonstrated ability to own software design and development end to end from requirements to launch.
• Ability to collaborate with cross-functional teams to define, design, and ship new features.
• A startup mindset  - An athlete who can run at breakneck speed of a startup, yet someone who can bring method to madness through processes suitable for different stages of the company - early stage prototyping and rapid experimentation, before product/market fit, after product/market fit, and scaling.
• Familiarity with Agile development, Scrums, continuous integration, and test driven development processes
• Data driven product development approach - strong focus on data backed engineering decisions.
• Ability to develop products incrementally in fast iterations
• Ability to do collaborative problem solving and design/build chaos resilient systems
• Strong focus on software quality
• Ability to mentor junior developers, and help build an excellent engineering team
• Ability to be a talent magnet - attract great talent to join the core team.