Python Developer

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.

Role Summary:

We are looking for a hands-on Java Solution Architect to design and lead scalable, secure, event-driven platforms. The ideal candidate has deep expertise in Java/Spring Boot microservices, Kafka, Redis/KeyDB, and open-source databases (Cassandra, PostgreSQL), with experience building high-throughput, low-latency systems.

Experience- 10+yrs

Key Responsibilities

• Architecture & Design
• Define service boundaries using DDD; create service contracts and API specifications.
• Design Kafka-based event flows (topics, partitions, retention, DLQs, idempotency).
• Choose fit-for-purpose storage (Cassandra vs PostgreSQL) for workloads:
• Cassandra for time-series, high write throughput, and horizontal scaling.
• PostgreSQL for transactional integrity, complex joins, and reporting.
• Engineer caching strategies using Redis/KeyDB (read-through/write-through, TTL, eviction).
• Establish NFRs (performance, availability, RPO/RTO) and capacity planning.
• Security & Compliance
• Implement OAuth2/OIDC, mTLS, token-based auth, key rotation, encryption at rest/in transit.
• Work with InfoSec/AppSec for threat modeling, VAPT, secure SDLC integration.
• DevOps & Observability
• Drive CI/CD pipelines (blue/green/canary), container orchestration (Kubernetes).
• Define SLOs/SLIs; implement metrics, logs, traces; promote proactive alerting.
• Governance & Standards
• Publish architecture guidelines, coding standards, and API governance (versioning, deprecation).
• Champion documentation (ADR, sequence diagrams, data flow, runbooks).
• Mentoring & Leadership
• Coach engineers; conduct design/code reviews; lead PoCs and migrations.
• Collaborate with Product/Delivery to align scope, timelines, and risk mitigation.

Required Technical Skills (Deep Expertise)

• Java: Java 17+, Spring Boot, Spring Cloud, reactive programming (WebFlux).
• Microservices: API Gateway, service mesh (Istio/Linkerd), resilience (Resilience4j).
• Kafka: Kafka Connect, Streams, consumer lag management, schema registry (Avro/JSON).
• Redis/KeyDB: Cluster configuration, HA, persistence (AOF/RDB), pub/sub and streams.
• Databases:
• Cassandra: Data modeling (partition keys, clustering), consistency levels, compaction strategies.
• PostgreSQL: Indexing strategies, partitioning, query planning, isolation levels, VACUUM.
• Cloud & Infra: Docker, Kubernetes, Helm/Terraform; AWS/Azure/GCP (EKS/AKS/GKE).
• Observability: Prometheus, Grafana, ELK/EFK, OpenTelemetry.
• Security: JWT, mTLS, secrets management (Vault/KMS), OWASP Top 10, compliance-aware design.

Soft Skills

• Strong stakeholder communication; ability to simplify complex technical decisions.
• Ownership mindset; risk identification and mitigation.
• Mentorship; collaborative leadership across cross-functional teams.

Role: Core infrastructure for two global applications.

Key responsibilities:

Heavy Data Lifting: Designing and maintaining complex MongoDB aggregation pipelines and executing high-volume bulk updates.

Systems Connectivity: Managing the lifecycle of Bridges, WebSockets, and REST APIs for global traffic.

Global Reliability: Troubleshooting performance regressions, managing SSL/TLS certificates, and optimizing AWS S3/EC2 resources.

Core Logic: Implementing server-side push notifications, custom payment flows, and background Cron orchestration.

Requirements (Must Have)

Production Experience: Proven experience managing backend services for live, high-traffic applications. (Must have)

Note: Learning projects, bootcamps, and online courses will not be considered.

Python Mastery: Expert-level proficiency in backend Python development. (Must have)

MongoDB Expertise: Deep knowledge of Aggregations and Bulk operations. (Must have)

AWS Proficiency: Direct experience with S3 and EC2 in a production setting. (Must have)

Infrastructure Logic: Ability to manage SSL/Encryption and optimize resource allocation (Cron vs. API). (Must have)

Job Title: Cloud Development & Linux Debugging Engineer

Experience: 5–10 Years

Location: Bangalore / Chennai

Job Summary

We are looking for an experienced Cloud Development & Linux Debugging Engineer with strong expertise in Linux internals, system-level programming, and cloud technologies. The ideal candidate will have hands-on experience in developing, debugging, and optimizing Linux-based systems along with exposure to DevOps tools and containerized environments.

Key Responsibilities

• Develop and debug software at the Linux system level (kernel/user space).
• Work on Linux internals, low-level system components, and performance optimization.
• Design, develop, and maintain applications using Python and C/C++.
• Troubleshoot complex issues in Linux and cloud-based environments.
• Collaborate with cross-functional teams in an Agile/Scrum environment.
• Contribute to automation and infrastructure using DevOps tools.
• Work with containerized and cloud platforms such as Kubernetes and OpenStack.

Required Skills

• Strong experience in Linux software development (Linux internals, system-level programming).
• Proficiency in Python and C/C++.
• Solid debugging and analytical skills.
• Hands-on experience with Ansible, Puppet, and DevOps practices.
• Experience working with OpenStack and Kubernetes.
• Good understanding of Agile/Scrum methodologies.
• Excellent communication and teamwork skills.

Preferred Skills (Good to Have)

• Experience with Go / Golang and Go templating.
• Knowledge of Kubernetes Operators and Helm.
• Exposure to containerization technologies (Docker, Kubernetes).
• Contributions to open-source projects.
• Experience with cloud-native architectures.

Qualifications

• Bachelor’s/Master’s degree in Computer Science, Engineering, or related field.
• Self-driven individual with a strong learning mindset.
• Ability to work independently and in collaborative team environments.

Primary Skills: Database Systems (SQL), Python Flask/Fast API/Django frameworks specifically
Requirements:

• Highly proficient in fundamentals of Python web development frameworks like Flask, Django and Fast API
• Demonstrated experience in developing APIs using Python frameworks
• Should have deep knowledge in PostgreSQL, MS SQL Server and other SQL based Databases
• Knowledge and proficiency in NoSQL is a bonus

We are seeking extremely smart programmers who are gung ho about building large scale systems that are going to have a big impact on millions of customers.

Responsibilities:

• Design and develop products by working closely with business team.
• Gain experience with hands on coding and independent ownership of software components.
• Build performant, scalable, enterprise ready back end architectures that can support millions of users in parallel.
• Follow strong engineering best practices and champion their adoption.

Requirements:

• 2+ years’ experience in software product development and delivery.
• Bachelors or Masters degree in engineering from a reputed institute(preferably IITs, NITs, or other top engineering institutes).
• Strong grasp of CS fundamentals, algorithms and excellent problem solving abilities.
• All experience should be from good product development or e-commerce background.
• Must have shown good stability in all your previous associations.
• Have strong backend knowledge and cloud development exposure.
• Expert at Java, Spring boot, Hibernate, REST API development.
• Worked with at least 1 RDBMS (Mysql preferred). NoSql is a plus.
• Have used or are very hands-on with Microservices, Docker, Kubernetes, Gradle/Ant, Kafka, GIT/bitbucket in a very agile work place.
• Writing high quality code which is made better by unit tests and integration tests is how you work.
• Comfortable with exploring proven open source tech stack like Grafana, Kibana, Jira, Prometheus, caches like Redis/Memcached, task queues like celery, to name a few.
• Knowledge of test driven development and AWS tech stack will be a good plus.

ROLES AND RESPONSIBILITIES 

• Proven working experience in backend app development and experience with Node JS.  
• Build advanced ecommerce backend applications for the multiple client platforms (both React and Android).  
• Understanding of design principles and good architecture patterns.  
• Proper Data Structures and Algorithm knowledge is a must.  

• Graph QL and Apollo Server knowledge.  
• Collaborate with cross-functional teams to define, design, and ship new features. Work with outside data sources and APIs like the one of Unicommerce.  
• Create Unit-test code for robustness, including edge cases, usability, and general reliability.  
• Work on bug fixing and improving application performance.  
• Continuously discover, evaluate, and implement new technologies to maximize development efficiency.  

• Translate designs and wireframes into high quality code.  
• Have a good understanding of CI/CD tools (any).  
• Robust knowledge of popular databases like MongoDB, Elastic Search, DynamoDB, Redis etc;  
• Knowledge about AWS Services like EC2, Lambda, Kinesis, Redshift, S3 is super plus. 
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CANDIDATES MUST HAVE  

• Node JS. 
• Data Structures and Algorithm  
• HTML5 and CSS3 
• Graph QL and Apollo Server  
• MongoDB, Elastic Search, DynamoDB, Redis 

• AWS Services like EC2, Lambda, Kinesis, Redshift, S3  

REQUIREMENTS  

• Bachelor's degree in computer science, information science, or similar.  
• Extensive knowledge of JavaScript, web stacks, libraries, and frameworks.  
• Knowledge of front-end technologies such as HTML5 and CSS3.  

• Superb interpersonal, communication, and collaboration skills.  
• Exceptional analytical and problem-solving aptitude.  
• Great organisational and time management skills.  
• Availability to resolve urgent web application issues outside of business hours