Software Engineer I - Backend

Role: Backend Developer (Node.js)

Key Responsibilities

Backend Development

• Build scalable, high-performance backend services and REST APIs using Node.js.
• Develop robust, maintainable, and production-ready applications.

Database Optimization

• Design efficient database schemas.
• Optimize queries, indexing, and overall database performance.
• Work extensively with PostgreSQL or MySQL.

Frontend Collaboration

• Collaborate closely with frontend engineers to integrate APIs.
• Basic understanding of React or Angular is a plus.

System Design

• Participate in both Low-Level Design (LLD) and High-Level Design (HLD) discussions.
• Design systems with scalability, security, and reliability in mind.

Cloud & Infrastructure

• Deploy and manage applications on AWS.
• Utilize Redis for caching and performance optimization.

Code Quality

• Write clean, maintainable, and well-documented code.
• Participate in code reviews and follow engineering best practices.

Testing & Debugging

• Write comprehensive test cases.
• Ensure backward compatibility.
• Debug and resolve issues related to functionality, performance, and scalability.

Required Skills & Experience

Must Have

• 2+ years of backend development experience.
• Strong proficiency in Node.js.
• Experience with PostgreSQL or MySQL.
• Good understanding of REST APIs.
• Experience with AWS cloud services.
• Knowledge of distributed systems and microservices architecture.
• Experience with Redis or similar caching technologies.
• Strong understanding of system design concepts.
• Excellent debugging and problem-solving skills.
• Focus on writing scalable, reliable, and testable code.

Good to Have

• Basic knowledge of React or Angular.
• Experience working in fast-paced startup environments.

Why Join Vahan?

• Unlimited Paid Time Off (PTO)
• Comprehensive Medical Insurance
• Monthly Wellness Leaves
• Competitive Compensation
• Opportunity to work on products impacting millions of users
• Fast-paced, high-growth startup backed by leading investors
• Ownership-driven engineering culture with meaningful technical challenges

Lead API Engineer - IND

Engineering - Hyderabad, Telangana

About Gradera

At Gradera, we’re defining a new category of enterprise transformation called Software-Orchestrated Services™ (SoS™) — a governed blend of human expertise and digital intelligence that transforms how enterprises operate.

Our mission is to build intelligent digital workers that augment teams and automate work across the value chain, helping organizations become more efficient, agile, and resilient.

We don’t believe in one-size-fits-all solutions. Every engagement is tailored to the unique needs of each enterprise — grounded in governance, security, and reliability. By aligning technology with strategy, we empower our clients to achieve measurable outcomes and lead with confidence in a rapidly evolving digital landscape.

Lead – API Engineer

Overview

Key Responsibilities

•Provide technical leadership, mentorship, and guidance to the API engineering team

•Lead the design, implementation, and evolution of API architecture and backend services

•Champion API-first development, ensuring clear contracts and comprehensive documentation (OpenAPI/Swagger)

•Lead the implementations of APIs conforming to all NFRs including security, scalability, and performance.

•Ensure robust authentication, authorization, and data protection for all endpoints

•Drive adoption of best practices in API design, versioning, and integration

•Optimize API performance for low-latency, high-frequency interactions

•Oversee observability, monitoring, and alerting for all APIs and backend services

•Collaborate closely with product, UI, and runtime teams to deliver integrated solutions

•Collaborate with the SDET to ensure comprehensive test coverage and effective test data creation

•Lead the adoption of modern API tools, frameworks, and best practices

•Ensure engineering rigor, code quality, and documentation standards are met

•Facilitate clear communication, knowledge sharing, and effective documentation within the team

•Support team growth through coaching, feedback, and skills development

Core Qualities & Skills

•Proven experience leading API or backend engineering teams and delivering complex API projects

•Deep expertise in API architecture, design, and implementation (RESTful, GraphQL, gRPC etc.)

•Strong programming skills in relevant backend languages (e.g., Node.js, Python, Java, Go, etc.)

•Experience with API security, authentication, and authorization (OAuth, JWT, RBAC, PKCE, define fine-grained access controls using ReBAC)

•Experience with API documentation and standards (OpenAPI/Swagger, Use Case, JSON Schemas, etc.)

•Familiarity with data serialization with Protofbuf

•Experience with some API gateway is a must

•Strong understanding of performance optimization, scalability, and reliability for APIs

•Experience with observability, monitoring, and troubleshooting for backend services

•Strong collaboration and alignment skills across disciplines

•Willingness to learn, share knowledge, and adapt to evolving technologies

•System design skills and awareness of technical debt and tradeoffs

•Excellent communication, documentation, and stakeholder management abilities

•Comfort with ambiguity, discovery, and rapid change

•Commitment to engineering excellence, security, and responsible practices

Preferred Qualifications

•7+ years of hands-on API or backend engineering experience, with 2+ years in a technical leadership role

•Track record of architecting and delivering scalable, reliable API systems

•Experience with modern development practices (CI/CD, automated testing, code reviews)

•Demonstrated ability to mentor and grow engineers

•Experience working in cross-functional, agile teams

Highly Desirable

•Experience with API gateways (e.g., Envoy, Kong, Apigee) and service mesh patterns (e.g., Istio)

•Experience with event-driven and streaming architectures (pub/sub, callbacks, Kafka, etc.)

•Experience with cloud-native infrastructure and automated provisioning (e.g., Terraform)

•Experience building developer portals and self-service onboarding for APIs

•Experience with API Gateways (Apache APISIX, KrakenD, …)

•Ability to perform API Domain Modelling with a strong product orientation, aligning technical design with user and business needs

•Experience thriving in fast-paced, ambiguous environments and balancing rapid delivery with technical excellence

•Experience leading or working with distributed, multidisciplinary teams

Success Metrics

•API response time (median and p95)

•Uptime and reliability of critical services

•Test coverage for API and backend logic

•Developer velocity and time from API design to production

•Time to First Prototype (TTFP)

•Integration lead time for API consumers

•Technical debt reduction and architectural alignment

•Team growth, engagement, and retention

•Stakeholder satisfaction and cross-team collaboration

What you’ll be doing

 Weare much more than our job descriptions, but here is where you will begin:

 As a Senior Software Engineer Data & ML You’ll Be:

 ● Architect, design, test, implement, deploy, monitor and maintain end-to-end backend

 services. You build it, you own it.

 ● Work with people from other teams and departments on a day to day basis to ensure

 efficient project execution with a focus on delivering value to our members.

 ● Regularly aligning your team’s vision and roadmap with the target architecture within your

 domain and to ensure the success of complex multi domain initiatives.

 ● Integrate already trained ML and GenAI models (preferably GCP in services.

ROLE:

 Whatyou’ll need,

 Like us, you’ll be deeply committed to delivering impactful outcomes for customers.

 What Makes You a Great Fit

 ● 5 years of proven work experience as a Backend Python Engineer

 ● Understanding of software engineering fundamentals OOPS, SOLID, etc.)

 ● Hands-on experience with Python libraries like Pandas, NumPy, Scikit-learn,

 Lang chain/LLamaIndex etc.

 ● Experience with machine learning frameworks such as PyTorch or TensorFlow, Keras, being

 proficient in Python

 ● Hands-on Experience with frameworks such as Django or FastAPI or Flask

 ● Hands-on experience with MySQL, MongoDB, Redis and BigQuery (or equivalents)

 ● Extensive experience integrating with or creating REST APIs

 ● Experience with creating and maintaining CI/CD pipelines- we use GitHub Actions.

 ● Experience with event-driven architectures like Kafka, RabbitMq or equivalents.

 ● Knowledge about:

 o LLMs

 o Vector stores/databases

 o PromptEngineering

 o Embeddings and their implementations

 ● Somehands-onexperience in implementations of the above ML/AI will be preferred

 ● Experience with GCP/AWS services.

 ● You are curious about and motivated by the future trends in data, AI/ML, analytics

Skills Required:

- Good experience with programming language Python
- Strong experience in Docker.
- Good knowledge with any of the Cloud Platform like Azure.
- Must be comfortable working in a Linux environment.
- Must have exposure into IOT domain and its protocols ((Zigbee & BLE ,LoRa,Modbus)
- Must be a good team player.
- Strong Communication Skills

Develop server-side applications using NestJS and NodeJS.

. Should have great hands-on knowledge of TypeOrm.

• Design and implement APIs, web services, and database models.

• Collaborate with front-end developers and other team members to integrate user-facing elements with server-side logic.

• Optimize application performance for maximum speed and scalability.

• Implement security and data protection measures.

• Conduct thorough testing and debugging of applications.

• Troubleshoot and resolve issues, ensuring high application reliability.

• Stay up-to-date with emerging technologies and industry trends, and apply them to projects as necessary.

• Collaborate with team members, participate in code reviews, and provide constructive feedbacks.

• Follow best practices and coding standards to ensure high-quality and maintainable code..

Requirements:

• Bachelor's degree in Computer Science...

• To support and maintain existing Java code base, debug the application 
• To analyse user and business requirements and design and implement appropriate solutions 
• To design and code programs following in-house standards and good design principles 
• To ensure that all programs are documented to the company standards 
• To create unit test plans and perform unit testing of the programs
• To provide advice and guidance to other members of the team

• Hands on experience in designing and developing applications using Java EE platforms 
• Object Oriented analysis and design using common design patterns 
• Good knowledge of Relational Databases, SQL and ORM technologies (JPA2, Hibernate) 
• Experience in the Spring Framework 
• Experience in developing web applications using at least one popular web framework (JSF, Wicket, GWT, Spring MVC) 
• Experience in RESTFul webservices
• Experience with test-driven development 
• Exposure to portal/mobility development - Desired
• Exposure to any of middleware solutions like MQ, Oracle fusion middleware(WebLogic), WebSphere, Open Source