Senior Web Application Developer - Python/Java/Golang

Description :

We are looking for an experienced Senior Web Application Developer with strong expertise in Python and solid working knowledge of Java or Go. You will play a key role in designing and developing scalable, data-driven, and AI-enabled applications for our AdTech and SaaS platforms. This role is hands-on, focusing on system design, backend engineering, and modern data/AI workflows, while also mentoring junior developers.

Responsibilities :

- Design, develop, and maintain Python-based backend services, APIs, and data pipelines.

- Contribute to system architecture and low-level design (LLD) for assigned modules.

- Build and optimize ETL workflows (Airflow, dbt, or custom pipelines) for data ingestion and transformation.

- Work with search systems, including vector search engines (Elasticsearch, OpenSearch, Pinecone, Weaviate, Milvus, FAISS).

- Implement caching strategies (Redis, Memcached) to improve performance.

- Integrate with pub/sub messaging systems (Kafka, RabbitMQ) for distributed and event-driven processing.

- Collaborate with product managers, architects, and QA engineers to deliver robust solutions.

- Mentor junior developers through code reviews, pair programming, and knowledge sharing.

- Explore and contribute to the adoption of LLMs, AI agents, and agentic workflows for intelligent automation.

- Follow best practices for CI/CD, testing, and containerization (Docker/Kubernetes).

Requirements :

- Strong expertise in Python for backend systems, data pipelines, or AI integration.

- Hands-on experience with Java or Go for microservices.

- Proficiency in REST API design and microservices architecture.

- Experience with ETL flows and data pipeline development (Airflow, dbt, Luigi, etc.).

- Practical exposure to search systems (Elasticsearch, Solr, OpenSearch) and vector search engines (Pinecone, Milvus, Weaviate, FAISS).

- Solid experience with RDBMS (PostgreSQL, MySQL) and NoSQL databases (MongoDB, Redis, Cassandra).

- Understanding of caching systems (Redis, Memcached).

- Experience with pub/sub systems (Kafka, RabbitMQ).

- Strong grasp of low-level design, distributed systems basics, concurrency, and performance optimization.

- Familiarity with LLMs, AI agents, and modern AI development frameworks (LangChain, LlamaIndex, Haystack).

- Version control and DevOps exposure (Git, CI/CD, Docker, Kubernetes).

Nice-to-Have :

- Prior exposure to the AdTech domain (campaign management, attribution, real-time bidding).

- Experience with multi-tenant SaaS platforms.

- Knowledge of Python-based AI/ML workflows or model deployment.

- Familiarity with frontend frameworks (React/Angular).

- Cloud development experience on AWS, GCP, or Azure.

- Understanding of observability frameworks (Prometheus, Grafana, ELK, OpenTelemetry).