Golang Backend Developer

Role overview:

We are hiring one Senior Backend Engineer to take end-to-end ownership of our serverless backend — a hands-on IC role for someone both technically excellent and comfortable being one of the few people the entire backend depends on. You'll own the services across several Node.js and Python repositories, work directly with the founders and product team, and set the technical bar for reliability, security, and performance.

Key responsibilities

• Design, build, and operate AWS Lambda services across our HCM/workforce, project-management, commercial/revenue, permissions, and document domains — each comprising dozens of functions.
• Own the multi-tenant PostgreSQL data layer — schema design, query performance, and the permission/relationship model — end to end.
• Maintain and evolve the request path — API Gateway → custom Lambda authorizer → VPC-bound Lambda → private databases — including the runtime IAM/credential model that scopes every request.
• Safeguard tenant isolation and security across a per-company Cognito authentication model.
• Build and maintain integrations with external construction data environments (Asite, Autodesk Construction Cloud), including large-scale document synchronization.
• Optimize performance and reliability to keep latency-sensitive endpoints well within platform limits under growing load.
• Raise the engineering bar — testing, observability, CI/CD, and modernization of legacy components.
• Debug and resolve production incidents to root cause, and put safeguards in place so they don't recur.
• Document decisions and designs and collaborate with the frontend (Angular) and product teams.

Challenges you'll solve.

We prefer to be candid — these are the problems that make this role genuinely interesting:

Latency under a hard ceiling

API Gateway terminates any request beyond ~29 seconds regardless of the Lambda's own timeout — yet much of our value comes from heavy cross-project reporting. You'll keep p95 latency within budget through set-based SQL, pagination, streaming, and asynchronous processing.

Least-privilege, per-request security

A shared custom authorizer mints short-lived, request-scoped credentials via sts:AssumeRole under a strict 2,048-character inline session-policy limit. You'll design permission models that stay within that budget and reason about IAM precisely.

Graph-shaped data, relational store

The permission and relationship model is inherently graph-like, but lives in PostgreSQL — you'll model it with recursive queries, careful indexing, and set-based traversal rather than reaching for a separate graph engine.

Watertight multi-tenancy

One Cognito pool per company and tenant-scoped access throughout — isolation is a first-order concern.

VPC-bound serverless

Lambdas run inside a VPC to reach private databases; you'll manage cold starts, connection lifecycles, and pool limits.

Resilient external integrations

Syncing large document sets from third-party APIs (including SOAP/XML) demands backpressure, deduplication, retries, and graceful partial-failure handling.

Compute-heavy workloads

Server-side PDF generation, image processing, and multi-currency handling within Lambda's memory and time constraints.

The stack.

Runtime — Node.js, Python, AWS Lambda

AWS services — -1 API Gateway, Lambda, Cognito, STS / IAM, Secrets Manager, S3 CloudWatch, VPC, EC2

Infrastructure & CI/CD- AWS SAM, CodePipeline → CodeBuild Shared Data —PostgreSQL

Qualifications.

• 5+ years building and operating production backend systems.
• Deep expertise in Node.js and JavaScript — the asynchronous model, event loop, and memory behavior — plus solid working proficiency in Python and its production behavior.
• Strong hands-on AWS experience, ideally serverless (Lambda, API Gateway, IAM/STS, VPC, Secrets Manager, CloudWatch) — able to reason about IAM policies, not just apply them.
• Advanced SQL and relational data modeling — set-based query design and a working understanding of why N+1 patterns cause production issues.
• Proven production-debugging ability — root-cause analysis in distributed systems from logs and first principles.
• Strong ownership, sound judgment, and clear written communication — able to make good decisions with incomplete information and explain trade-offs to non-engineers.

Interview Process:

Introductory call-Mutual fit and role overview.

Technical deep-dive- A walkthrough of a challenging production problem you have owned.

Practical exercise -A realistic backend task, or a walkthrough of your own representative code.

System design- Collaborative design on a real scenario.

Final conversation- Values, ownership, compensation, and offer.

JioTesseract, a digital arm of Reliance Industries, is India's leading and largest AR/VR organization with the mission to democratize mixed reality for India and the world. We make products at the cross of hardware, software, content and services with focus on making India the leader in spatial computing. We specialize in creating solutions in AR, VR and AI, with some of our notable products such as JioGlass, JioDive, 360 Streaming, Metaverse, AR/VR headsets for consumers and enterprise space.

About the Job

As a Cloud Backend Engineer you will design, develop, and maintain scalable and reliable backend systems in cloud environments. You will be responsible for building cloud-native applications, optimizing backend performance, and ensuring seamless integration with frontend services and third-party systems.

What You’ll Be Doing

• Backend Development
• Design and implement scalable and high-performance backend services and APIs for cloud-based applications.
• Develop microservices architectures and serverless functions to support business needs.
• Ensure backend systems are secure, reliable, and performant, adhering to best practices and industry standards.
• Cloud Infrastructure and Deployment
• Build and manage cloud infrastructure using platforms such as AWS, Google Cloud Platform (GCP), or Azure.
• Deploy and maintain backend services using cloud-native technologies (e.g., Kubernetes, Docker, AWS Lambda, Google Cloud Functions).
• Implement and manage CI/CD pipelines to automate deployment processes and ensure smooth delivery of updates.
• Performance Optimization
• Monitor and optimize the performance of backend services, including database queries, API responses, and system throughput.
• Implement caching strategies, load balancing, and other performance-enhancing techniques to ensure scalability and responsiveness.
• Troubleshoot and resolve performance issues and system bottlenecks.
• Database Management
• Design and manage relational and NoSQL databases, ensuring data integrity, scalability, and performance.
• Implement data access patterns and optimize queries for efficient data retrieval and storage.
• Ensure backup, recovery, and data security practices are in place.
• Integration and Collaboration
• Collaborate with frontend developers, DevOps engineers, and other stakeholders to integrate backend services with frontend applications and third-party systems.
• Participate in architectural discussions and provide input on system design and technology choices.
• Ensure clear communication and documentation of backend services, APIs, and system interactions.
• Security and Compliance
• Implement security best practices to protect backend services from threats and vulnerabilities.
• Ensure compliance with relevant regulations and standards, including data privacy and protection requirements.
• Conduct regular security assessments and vulnerability scans to maintain system integrity.
• Testing and Quality Assurance
• Develop and maintain automated tests for backend services, including unit tests, integration tests, and end-to-end tests.
• Perform code reviews and participate in quality assurance processes to ensure high code quality and reliability.
• Monitor and address issues identified during testing and production deployments.
• Documentation and Knowledge Sharing
• Document backend services, APIs, and infrastructure setups to facilitate knowledge sharing and support.
• Create and maintain technical documentation, including architecture diagrams, API specifications, and deployment guides.
• Share knowledge and best practices with team members and contribute to a collaborative development environment.

What We Need To See

• Strong experience in backend development, cloud technologies, and distributed systems, with a focus on building robust, high-performance solutions.
• Minimum 5 years of experience in backend development, with a strong focus on cloud-based applications.
• Proven experience with cloud platforms (AWS, GCP, Azure) and cloud-native technologies.
• Experience in designing and implementing RESTful APIs, microservices, and serverless architectures.
• Technical Expertise in:

1. Backend Development

• Strong experience with backend programming languages such as Node.js, Python
• Expertise in working with frameworks such as NestJS, Express.js, or Django.

2. Microservices Architecture

• Experience designing and implementing microservices architectures.
• Knowledge of service discovery, API gateways, and distributed tracing.

3. API Development

• Proficiency in designing, building, and maintaining RESTful and GraphQL APIs.
• Experience with API security, rate limiting, and authentication mechanisms (e.g., JWT, OAuth).

4. Database Management

• Strong knowledge of relational databases (e.g., PostgreSQL, MySQL) and NoSQL databases (e.g. MongoDB).
• Experience in database schema design, optimization, and management. 

5. Cloud Services

• Hands-on experience with cloud platforms such as Azure,AWS or Google Cloud.

6. Performance Optimization

• Experience with performance tuning and optimization of backend services.

7. Security

• Understanding of security best practices and experience implementing secure coding practices.
• Soft Skills:
• Strong problem-solving skills and attention to detail.
• Excellent communication and collaboration skills, with the ability to work effectively in a team environment.
• Ability to manage multiple priorities and work in a fast-paced, dynamic environment.

1. Role: IoT Application Development (Java) Skill Set:

• Proficiency in Java 11.
• Strong knowledge of Spring Boot framework.
• Experience with Kubernetes.
• Familiarity with Kafka.
• Understanding of Azure Cloud services.

1 Experience: 3 to 5 years Location: Bangalore ; Notice period : Immediate Joiners

1. Job Description: We are seeking an experienced IoT Application Developer with expertise in Java to join our team in Bangalore. As a Java Developer, you will be responsible for designing, developing, and deploying IoT applications. You should have a solid understanding of Java 11 and the Spring Boot framework. Experience with Kubernetes and Kafka is also required. Familiarity with Azure Cloud services is essential. Your role will involve collaborating with the development team to build scalable and efficient IoT solutions using Java and related technologies.

About Us

Rezo.ai is an AI-Powered Contact Center that enables enterprises to enhance customer experience and boost revenue by automating and analyzing customer agent interactions across multiple channels including voice, email, chat/WhatsApp, and social, at the required scale, whilst training agents with minimal costs

How do we do it

Rezo’s AI-Powered contact center leverages groundbreaking technologies in AI, ML, ASR, NLP, RPA, and predictive intelligence to transform customer experience and reduce costs by automating, and analyzing customer-agent conversations across multiple channels including voice, email, chat/Whatsapp, and social media, whilst coaching them. 

What Makes You A Good Fit :

• You are passionate about technology and software development
• You are continuously experimenting and learning more
• You love solving problems and digging into complex problems
• You believe in taking decisions as close to the product and technical expertise as possible.
• You believe in creativity, trying new things and learning from your mistakes.
• You believe in sharing insights and helping one another to build an even better user plan.

Key Skills Required:

• 3-8 years of Experience in Java Product Development.
• Good understanding of MYSQL.
• Practitioner of clean code and SOLID principles
• Exposure to GIT and Maven
• Good verbal and written communication skills
• Understands different major language paradigms (Object Oriented and Functional)
• Understanding and Experience with Multi-Threaded Applications
• Prior Experience in a SAAS Product company is a Plus 
• Experience with Managing Team is a plus

Educational Background:

• Bachelor's/Master’s degree in Computer Science Engineering from Tier 1 College is a Plus.

Why You Should Join Rezo.AI

• You will be surrounded by Passionate Team Members with Exposure to Product Building
• You will be learning About various Product Development Cycles
• Big Career Opportunities
• Learning by doing
• The Opportunity of Innovation
• Recognition
• Enhanced Responsibility and Team Management

Cultural fitment 

Work at the heart of AI and customer engagement.

If you are fascinated by AI and looking to work with the latest AI technologies, in a fast growing and flexible work environment with immense growth opportunities, come and join us.

Rezo is the place to be if you want to work in an atmosphere where you can do meaningful research, contribute to the platform, and grow fast.

Culture/Values

We believe that allowing employees to pursue their interests and challenge the existing quo only helps to make Rezo a successful workplace. To that end, we are committed to assisting our employees in enhancing the skills that are vital to their professional growth.

FOCUS, INTEGRITY, TEAMWORK, PASSION, INNOVATION

Why Us?

We are a fast-paced start-up with some of the best talents from diverse backgrounds. Working together to solve customer service problems. We believe a diverse workforce is a powerful multiplier of innovation and growth, which is key to providing our clients with the best possible service and our employees with the best possible career. Diversity makes us smarter, more competitive, and more innovative.

Visit our website: https://rezo.ai/">https://rezo.ai/ for more information

• Should be able to analyse requirements, design solutions, write code, debug code and modify existing software enhancements or develop new product software.
• Should be able mentor junior developers to perform their tasks more effectively and efficiently.
• Should be able to perform executions against project plans and meet delivery commitments.
• Should have good experience in source control, unit testing, code verification, documentation, automated build, continuous integration, metrics, and code reviews.
• May interact with product specialists / Project Managers / Product Owners to define system requirements and/or necessary modifications and to give status feedback.
• Should be able to work in an Agile Development Environment using SCRUM methodology.
• Should be able to communicate with other teams and stakeholders to achieve the given goal.
• Should be able to participate in the hiring processes.

Key Responsibilities 

• Build and create Credflow Product - Do development on our tech Stack 
• Understand requirements from the product manager and sometimes talk to customers to understand the exact requirement and develop insights. 
• Maintain the product and optimize over time for performance
• Identify needs of the stakeholders and work with technology and management team to build future timeline of products and features
• Be the go-to person for all technology related requirements, queries, discussion etc
• Develop a complete analytics framework as the product evolves.

What we seek

• We are looking for someone who is a hustler and is deeply passionate about solving technology-led complex problems
• The person should be able to take ownership of work in a highly challenging and dynamic startup environment

Benefits

• Chance to be with the right team, at the right time
• Work as part of the core team and experience the aspects of growing a business exponentially
• Get a deep understanding of the Fintech domain and unleash your potential to create an impact. 

Qualifications and skills

• Undergraduate/Graduate degree from an engineering college
• Has full stack proficiency, managing large amounts of data and prior exposure to backend, web frontend, mobile apps etc. 
• Full Stack Proficiency on Node.JS, React.JS
• SQL
• In memory data stores like Redis
• Experience in AWS (preferable)

Experience

2-4 years of experience 

Preference

Previous experience in a startup or as an entrepreneur