Backend Developer

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

Strong Senior Backend Engineer profiles

Mandatory (Experience 1) – Must have 5+ years of hands-on Backend Engineering experience building scalable, production-grade systems

Mandatory (Experience 2) – Must have strong backend development experience using one or more frameworks (FastAPI / Django (Python), Spring (Java), Express (Node.js).

Mandatory (Experience 3) – Must have deep understanding of relevant libraries, tools, and best practices within the chosen backend framework

Mandatory (Experience 4) – Must have strong experience with databases, including SQL and NoSQL, along with efficient data modeling and performance optimization

Mandatory (Experience 5) – Must have experience designing, building, and maintaining APIs, services, and backend systems, including system design and clean code practices

Mandatory (Domain) – Experience with financial systems, billing platforms, or fintech applications is highly preferred (fintech background is a strong plus)

Mandatory (Company) – Must have worked in product companies / startups, preferably Series A to Series D

Mandatory (Education) – Candidates from Tier - 1 engineering institutes (IITs, BITS, are highly preferred)

Backend - Software Development Engineer III

Experience - 7+ yrs

About Wekan Enterprise Solutions

Wekan Enterprise Solutions is a leading Technology Consulting company and a strategic investment partner of MongoDB. We help companies drive innovation in the cloud by adopting modern technology solutions that help them achieve their performance and availability requirements. With strong capabilities around Mobile, IOT and Cloud environments, we have an extensive track record helping Fortune 500 companies modernize their most critical legacy and on-premise applications, migrating them to the cloud and leveraging the most cutting-edge technologies.

Job Description

We are looking for passionate software engineers eager to be a part of our growth journey. The right candidate needs to be interested in working in high-paced and challenging environments leading technical teams, designing system architecture and reviewing peer code. Interested in constantly upskilling, learning new technologies and expanding their domain knowledge to new industries. This candidate needs to be a team player and should be looking to help build a culture of excellence. Do you have what it takes?

You will be working on complex data migrations, modernizing legacy applications and building new applications on the cloud for large enterprise and/or growth stage startups. You will have the opportunity to contribute directly into mission critical projects directly interacting with business stakeholders, customers technical teams and MongoDB solutions Architects.

Location - Chennai or Bangalore

• Relevant experience of 7+ years building high-performance back-end applications with at least 3 or more projects delivered using the required technologies
• Good problem solving skills
• Strong mentoring capabilities
• Good understanding of software development life cycle
• Strong experience in system design and architecture
• Strong focus on quality of work delivered
• Excellent verbal and written communication skills

Required Technical Skills

• Extensive hands-on experience building high-performance web back-ends using Node.Js and Javascript/Typescript
• Min two years of hands-on experience in NestJs
• Strong experience with Express.Js framework
• Implementation experience in monolithic and microservices architecture
• Hands-on experience with data modeling on MongoDB and any other Relational or NoSQL databases
• Experience integrating with any 3rd party services such as cloud SDKs (Preferable X), payments, push notifications, authentication etc…
• Hands-on experience with Redis, Kafka, or X
• Exposure into unit testing with frameworks such as Mocha, Chai, Jest or others
• Strong experience writing and maintaining clear documentation

Good to have skills:

• Experience working with common services in any of the major cloud providers - AWS or GCP or Azure
• Technical certifications in AWS / Azure / GCP / MongoDB or other relevant technologies

We are seeking a highly skilled Backend Developer to join our team and contribute to the development and improvement of both our customer-centric SaaS platform and internal systems.

As a Backend Developer, you will be responsible for designing, implementing, and maintaining the server-side logic of our application, ensuring high performance, scalability, and security.

Responsibilities:

• Collaborate with cross-functional teams, including front-end developers, product managers, and designers, to understand project requirements and translate them into technical specifications.

• Design and develop server-side logic, APIs, and database schema to support the functionality and performance requirements of our SaaS platform.

• Write clean, modular, and well-documented code using any relevant programming language preferably Java with SpringBoot.

• Optimize the backend systems for maximum speed and scalability, ensuring high performance and responsiveness of the application.

• Implement data storage solutions using PostgreSQL or other relational databases, ensuring data integrity and security.

• Conduct thorough testing and debugging to identify and resolve any issues or bugs in the backend code.

• Stay up-to-date with emerging technologies, industry trends, and best practices in backend development and contribute to the continuous improvement of our development processes.

Requirements:

• Proven work experience as a Backend Developer or similar role, with a focus on server-side development.

• Proficiency in working with relational databases, particularly PostgreSQL, and writing efficient SQL queries.

• Familiarity with SaaS concepts and architecture.

• Experience with API design and development, including RESTful APIs. • Solid understanding of software development principles, including object-oriented programming, design patterns, and data structures.

• Experience with version control systems, such as Git.

• Strong problem-solving and analytical skills, with keen attention to detail. • Excellent communication and teamwork skills, with the ability to collaborate effectively with cross-functional teams.

• Bachelor's degree in Computer Science, Engineering, or a related field is preferred, but not mandatory.

As a Backend Developer with expertise in Java, and PostgreSQL, you will play a critical role in developing and maintaining the backend infrastructure of our SaaS and internal platforms, ensuring its reliability, scalability, and performance. Join our team and be a part of building cutting-edge software solutions that empower our customers and drive business growth. 

Key Skills required (Items in Bold are mandatory keywords) :

1. Proficiency in Python  & Django

2. Solid understanding of Python concepts

3. Experience with some form of Machine Learning (ML)

4. Experience in using libraries such as Numpy and Pandas

5. Some form of experience with NLP and Deep Learning using any of Pytorch, Tensorflow, Keras, Scikit-learn or similar

6. Hands on experience with RDBMS such as Postgres or MySQL

7. Experience building REST APIs using DRF or Flask

8. Comfort with Git repositories, branching and deployment using Git

9. Working experience with Docker

10. Experience in deploying Django applications to AWS,Digital Ocean or Heroku

About Climate Connect Digital

Our team is inspired to change the world by making energy more intelligent, greener, and affordable. Established in 2011 in London, UK, and now headquartered in Gurgaon, India. We have become a leading energy-AI software player from unassuming beginnings at the vanguard of accelerating the global energy transition.

In 2020 Renew Power, India's largest renewables developer, acquired Climate Connect. Following ReNew's listing on NASDAQ during summer 2021 Climate Connect has become the technology anchor of a new fully independent subsidiary - Climate Connect Digital. With backing from ReNew as the anchor investor to pursue an ambitious and visionary new strategy for rapid organic and inorganic growth.

Our mission has technology at its core and involves unlocking value through intelligent software, digitalisation, and horizontal integration' across the energy ecosystem. However, the application of computational power and machine learning to the energy sector has yet to be fully leveraged and can create massive value.

How do you fit in

Curious:You love learning about new tools and technologies

Exposure: You have plenty of experience in executing projects successfully. You

have a client-side exposure on project management

Team player: You have no problem working in a team setting. You can effectively

collaborate with people to reach a solution.

Problem solver: You are the person your peers turn to for solving problems.

Talented: You are an expert in database designing.

Honesty: You work diligently and honestly. You have strong moral principles.

Job Responsibilities

You will be working at the epicenter of energy transformation. You will be creating

data-driven software solutions for forecasting and scheduling data in the renewables power

market. Ultimately, through your contribution to the renewable energy revolution, you will be

doing your bit to mitigate the effects of climate change. These are a few things you can look

forward to working on:

Designing and implementing low-latency, high-availability, and performance

applications

Identifying and mitigating security-related threats to the application.

Using your expertise in database designing and application architecture planning for

Core & MVC projects

Debugging browser extensions & server tools

Solving complex technical issues

Ensuring quality projects are delivered within defined timelines

Designing new frameworks, debugging and modifying existing frameworks

Maintaining databases to ensure strong optimization and functionalities

Learning new technologies and how to design and implement Project Architectures

Job Requirements

PHP/Python

MVC Framework Laravel / Python Flask.

AJAX, HTML/HTML5 & CSS/CSS3 JavaScript and JavaScript frameworks(preferably jQuery)

Web services (SOAP, REST)

SQL and NoSQL scripting and databases like MYSQL and Mongo DB administration

Code versioning tools, such as Git

AngularJS / ReactJS

B. E / B. Tech / M. Tech / B. Sc in CS or IT

2-4 years of experience in the field

What's in it for you

We offer competitive salaries based on prevailing market rates. In addition to your introductory package, you can expect to receive the following benefits:

Flexible working hours and leave policy

Learning and development opportunities

Medical insurance/Term insurance, Gratuity benefits over and above the salaries

Access to industry and domain thought leaders.

At Climate Connect, you get a rare opportunity to join an established company at the

early stages of a significant and well-backed global growth push. We are building a remote-first organisation ingrained in the team ethos. We understand its importance for the success of any next-generation technology company. The team includes passionate and self-driven people with unconventional backgrounds, and we're seeking a similar spirit with the right potential.

• Development & maintenance of Cleartrip’s product lines
• Involved in entire lifecycle including analysis, development, fixing, and monitoring of issues on the assigned Cleartrip product lines
• Unit test cases – Review and writing

• 2+ years of Product Development experience
• Java, Spring Framework preferred
• Solid experience with databases (Oracle/MySQL) – a must
• Excellent OO and design skills
• Experience with Test Driven Development within a continuous Integration environment (Lunt, CruiseControl, etc)

• BE/B.Tech Computer Science Personality Traits/Attributes:
• Excellent communication skills
• Excellent interpersonal skills – team player & desires to works closely with teammates, QA & product teams
• Problem-solving skills – Ability to research, analyze & find solutions independently.

Job brief DotNet (2 to 3 years)
We are looking for a .Net developer to build software using languages and technologies of the .NET framework. You will create applications from scratch, configure existing systems and provide user support.

In this role, you should be able to write functional code with a sharp eye for spotting defects. You should be a team player and excellent communicator.

Your goal will be to work with internal teams to design, develop and maintain software.

Responsibilities
-Participate in requirements analysis
-Collaborate with internal teams to produce software design and architecture
-Write clean, scalable code using .NET programming languages
-Test and deploy applications and systems
-Revise, update and debug code
-Improve existing software
-Develop documentation throughout the software development life cycle (SDLC)
-Serve as an expert on applications and provide technical support
Requirements
-Proven experience as a .NET Developer or Application Developer
-Familiarity with the http://asp.net/">ASP.NET framework, SQL Server and design/architectural patterns (e.g. Model-View-Controller (MVC))
-Familiarity with architecture styles/APIs (e.g RESTful)
-Understanding of Agile methodologies
-Excellent troubleshooting and communication skills
-Any Graduate (Computer Science, Engineering or a related field)