SENIOR BACKEND DEVELOPER with 7+ years of experience

1 week ago

Cochin, Kerala, India Cydez Technologies Full time ₹ 8,00,000 - ₹ 24,00,000 per year

Company Description

Cydez Technologies is a leading IT Digital Transformation and IT Service Management company based in Kochi, Kerala. Specializing in innovative digital solutions, Cydez Technologies empowers businesses to streamline their operations and achieve unparalleled efficiency. The focus on cutting-edge technology and exceptional service enables Cydez Technologies to deliver customized IT strategies and robust management solutions to help organizations navigate the complexities of the digital landscape.

Position Title: Senior Backend Developer

Department: Technology

Reporting To: Project Manager

Type: Full-time

Location: Cochin (Work from Office)

Role Overview

The Senior Backend Developer will design and implement backend

services powering the Purvaj portals. This includes building APIs in

FastAPI and Spring Boot, managing multi-role access flows, enabling real-

time and offline sync, and ensuring high scalability for heritage data,

rituals, and marketplace services.

Responsibilities


• Architect and implement APIs for user, heritage guide, and service

provider portals.


• Build robust authentication and role-based access (User, Heritage

Guide, Service Provider, Admin) with Keycloak OIDC.


• Implement booking, payment, earnings, vault, and family tree APIs.


• Design and optimize schemas in PostgreSQL 16 with Row-Level

Security, plus PostGIS for geospatial data.


• Experience in graph DB Exp with Cypher query optimization and

graph data modelling.


• OCR integration experience - post-processing OCR outputs, handling

low-quality scanned documents


• Deliver real-time updates (ritual status, bookings, notifications).


• Implement offline sync APIs with retry and queue mechanisms

(Celery + Redis).


• Integrate services through Kong API Gateway with proper routing

and policies.


• Build search/vector integrations with OpenSearch (k-NN).


• Handle streaming and event-driven flows with Apache Kafka.


• Manage media workflows with S3/DigitalOcean Spaces, CloudFront,

and imgproxy.


• Ensure deployments via Terraform and Kubernetes (EKS, HPA, blue-

green & canary strategies).


• Implement financial workflows: split payouts, GST invoice

generation, reconciliation via Kafka.


• Enforce PII protection: AES field-level encryption with AWS KMS,

secret management in AWS Secrets Manager/SSM.


• Write unit/integration tests and CI/CD pipelines for production

readiness.

Requirements


• 7+ years in backend development with Python

(FastAPI/Flask/Django) and Java (Spring Boot).


• Expertise in PostgreSQL (schemas, migrations, optimization), with

knowledge of PostGIS and ClickHouse.


• Experience with microservices, event-driven systems, and API-first

design.


• Strong knowledge of queues and background processing (Kafka,

Celery, Redis).


• Familiarity with authentication (OIDC/JWT) and Kong gateway

policies.


• Proven delivery of high-scale portal backends with offline-first

support.


• Bonus: Experience with financial/payment systems (Razorpay,

Stripe) and multi-cloud setups.


• Prior experience in Product Development shall be preferred.


• Proven experience in Backend development of B2C Portals preferred.

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