# Team Lead - Messaging APIs

> Weekday AI · Bengaluru, India · Full-time · Posted 2026-09-11

**Salary:** INR 3,000,000–8,000,000

**Workplace:** on_site

**Department:** Weekday's Client via platform

## Description

𝗧𝗵𝗶𝘀 𝗿𝗼𝗹𝗲 𝗶𝘀 𝗳𝗼𝗿 𝗼𝗻𝗲 𝗼𝗳 𝘁𝗵𝗲 𝗪𝗲𝗲𝗸𝗱𝗮𝘆'𝘀 𝗰𝗹𝗶𝗲𝗻𝘁𝘀

𝗦𝗮𝗹𝗮𝗿𝘆 𝗿𝗮𝗻𝗴𝗲: 𝗥𝘀 𝟯𝟬𝟬𝟬𝟬𝟬𝟬 - 𝗥𝘀 𝟴𝟬𝟬𝟬𝟬𝟬𝟬 (𝗶𝗲 𝗜𝗡𝗥 𝟯𝟬-𝟴𝟬 𝗟𝗣𝗔)

Experience: 4+ yrs

Location: Bengaluru, Karnataka, India

Job Type: Full-time

We are looking for a hands-on **Engineering Lead** to lead the development of high-throughput messaging platforms and APIs supporting large-scale communication across multiple channels, including **SMS, MMS, WhatsApp, RCS, and verification services**.

The role combines **hands-on software development, architecture, technical leadership, and mentoring**, with a strong emphasis on building reliable distributed systems capable of processing very high message volumes. The ideal candidate will spend significant time coding and designing systems while providing technical direction and mentoring to a team of engineers.

## Requirements

Key Responsibilities

-   Design and develop high-throughput messaging pipelines covering **API ingestion, routing, queuing, rate limiting, retries, and delivery receipt processing**.
-   Build scalable and highly available backend services using **Python or Golang**, with strong consideration for concurrency and performance.
-   Design and maintain carrier and messaging aggregator integrations using **SMPP and HTTP**.
-   Implement intelligent routing, failover mechanisms, delivery-quality monitoring, and traffic optimisation.
-   Develop asynchronous messaging infrastructure using **Kafka, SQS, RabbitMQ**, or similar technologies.
-   Design reliable systems using **idempotency, backpressure, rate limiting, retry strategies, and fault-tolerant patterns**.
-   Establish technical direction through architecture reviews, system design discussions, service contracts, and engineering standards.
-   Own production reliability, including **SLOs, observability, alerting, capacity planning, on-call readiness, troubleshooting, and root-cause analysis**.
-   Build messaging capabilities that support regulatory and carrier requirements such as **10DLC, toll-free messaging, DLT, sender IDs, and opt-out handling**.
-   Develop mechanisms to maintain traffic quality and protect messaging infrastructure against **spam, abuse, fraud, and SMS pumping**.
-   Work with databases such as **PostgreSQL or MySQL**, along with caching and NoSQL technologies such as Redis or DynamoDB.
-   Design and operate cloud-native services using **AWS**, containers, and modern deployment practices.
-   Participate in code and design reviews while maintaining high standards for scalability, reliability, security, and maintainability.
-   Mentor and guide **3–5 engineers**, supporting their technical growth through regular feedback, architecture discussions, and collaborative problem-solving.
-   Lead or contribute to complex production incidents and ensure effective remediation and preventive improvements.

What Makes You a Great Fit

-   **4–7 years of experience** building large-scale distributed backend systems, with demonstrated technical leadership or mentoring experience.
-   Strong proficiency in **Python or Golang**; strong Java or Node.js experience may also be considered.
-   Proven experience designing **RESTful APIs, high-throughput microservices, distributed systems, and highly available services**.
-   Strong understanding of asynchronous messaging systems such as **Kafka, Amazon SQS, RabbitMQ**, or equivalent platforms.
-   Hands-on understanding of **concurrency, idempotency, backpressure, rate limiting, retries, and fault tolerance**.
-   Strong experience with **PostgreSQL or MySQL**, with exposure to Redis, DynamoDB, or other caching/NoSQL technologies.
-   Practical experience with **AWS**, including services such as EC2, S3, RDS, SQS, ECS, and Lambda.
-   Experience with Docker/containerised deployments, Git, and at least one modern **CI/CD** platform.
-   Strong production ownership, including observability, monitoring, distributed tracing, live-system debugging, incident management, and on-call practices.
-   Strong system-design and architecture skills with the ability to make pragmatic decisions for high-scale environments.
-   Excellent technical communication and collaboration skills.
-   Demonstrated ability to mentor engineers and provide effective technical guidance.
-   Experience in **CPaaS, telecom, or A2P messaging** is an advantage.
-   Knowledge of **SMPP, WhatsApp Business API, RCS, 10DLC, DLT, least-cost routing, deliverability analytics, fraud detection, or traffic-quality systems** is highly desirable.

## Apply

[Apply at Weekday AI](https://apply.workable.com/weekday-1/j/25CFD29C12/apply)

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