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About Sun King
Sun King is the world’s leading off-grid solar energy company, providing affordable solar solutions to the 1.8 billion people without reliable access to electricity. By combining product design, fintech, and field operations, Sun King has connected over 20 million homes to solar power across Africa and Asia, adding more than 200,000 new homes each month. Through ‘pay-as-you-go’ financing, customers make small payments to eventually own their solar systems, saving money and reducing reliance on harmful energy sources like kerosene.
Sun King employs 2,800 staff across 12 countries, with expertise in product design, data science, logistics, customer service, and more. The company is expanding its product range to include clean cooking, electric mobility, and entertainment solutions, all while supporting a diverse workforce — with women making up 44% of the team.
About the role
The Senior Software Developer - Backend will work as part of the Digitization and Automation team to support Sun King design, develop, and implement intelligent, tech-enabled solutions to help solve a large variety of our business problems. We are looking for candidates with an affinity for technology and automations, curiosity towards advancement in products, and strong coding skills for our in-house software development team.
What you will be expected to do:
- Design and build applications/systems based on wireframes and product requirements documents.
- Design and develop coherent and physical data models to meet application requirements.
- Identify and correct bottlenecks/bugs according to operational requirements.
- Focus on scalability, performance, service robustness, and cost trade-offs.
- Create prototypes and proof-of-concepts for iterative development.
- Take complete ownership of projects (end to end) and their development cycle.
- Mentoring and guiding team members.
- Unit test code for robustness, including edge cases, usability, and general reliability.
- Integrate existing tools and business systems (in-house tools or business tools like ticketing software and communication tools) with external services.
- Coordinate with Product Manager, development team, & business analysts.
You might be a strong candidate if you have/are:
- A minimum of 4 years of experience.
- Deep knowledge of OOPS concepts and programming skills in Core Java, Spring Framework.
- Experience in web service development and integration (SOAP, REST, JSON, XML).
- Should be very strong in problem solving, data structures, and algorithms.
- Strong experience in SQL.
- Experience in the AWS suite (Ec2, RDS, Lambda, API Gateway).
- Experience in scripting languages like Python.
- Experience in Microservice Architecture.
- Prior managing/mentoring experience.
- Knowledge of best software engineering practices for all stages of the software development life cycle, including coding standards, code reviews, testing, and deployment.
Good to have:
- Knowledge on messaging systems RabbitMQ, Kafka.
- Container-based application deployment (Docker or equivalent)
- Willing to learn new technologies and implement them in products.
What Sun King offers:
- Professional growth in a dynamic, rapidly expanding, high-social-impact industry.
- An open-minded, collaborative culture made up of enthusiastic colleagues who are driven by the challenge of innovation towards profound impact on people and the planet.
- A truly multicultural experience: you will have the chance to work with and learn from people from different geographies, nationalities, and backgrounds.
- Structured, tailored learning and development programs that help you become a better leader, manager, and professional through the Sun King Center for Leadership.
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About Sun King
About
Sun King is a leading global provider of off-grid solar energy solutions, designed to serve the 1.8 billion people who lack reliable or affordable access to traditional electrical grids. With a mission to power brighter lives, the company focuses on underserved markets across Africa and Asia. Sun King's product range includes solar lanterns, solar home systems, and solar inverters, tailored to meet a variety of energy needs—from portable lighting to powering entire homes.
The company's innovative solutions, such as the recently launched PowerHub 3300 and expandable solar home systems, reflect their commitment to evolving customer demands. With operations in over 40 countries and millions of products sold, Sun King makes solar energy accessible through pay-as-you-go financing options. The company’s network of field agents plays a key role in selling, installing, and servicing products, driving local economic development. Rooted in sustainability, Sun King also implements a Sustainable Financing Framework and ensures customer satisfaction through extensive service centers and after-sales support.
Company video
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Candid answers by the company
Sun King designs, distributes, installs, and finances solar energy solutions for the 1.8 billion people living without reliable access to electricity. The company offers a range of products from portable solar lamps to powerful home and business energy systems, aiming to improve lives across Africa and Asia through affordable, clean energy.
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https://en.m.wikipedia.org/wiki/Entrepreneur_First">https://en.m.wikipedia.org/wiki/Entrepreneur_First
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What will be your key responsibilities?
Although it’s an engineering role, you will have significant involvement in product, hiring and business as well. You may expect following key responsibilities:
Engineering: You’ll need to write code – a lot of code. At the end of the day, your most important responsibility is to get your company’s product to market and maximize the number of product experiments that can be run. You’ll make key architectural decisions that will be pillars of the engineering organization for years to come. At the same time, you’ll have to make serious trade-offs to balance speed of execution with quality.
Product: As a founding engineer, you’ll also have a significant amount of ownership over the product direction. You should expect to spend time talking to customers, teasing out use cases, and making prioritization decisions regarding both the short- and long-term roadmap. In many cases, you will be building features in the absence of any formal product requirement document.
Support: You should also expect to spend a fair amount of time in the trenches supporting customers. You’ll probably find yourself engaging with customers in shared Slack channels, WhatsApp groups etc.
Hiring: As a founding engineer, you will spend a ton of time sourcing, interviewing, and closing early team members.
Business: Finally, you’ll gain exposure to all other aspects of the business – from fundraising, to sales, and beyond. Although you probably won’t be closing deals or making pitch decks, you will certainly be expected to sell your product and pitch the company’s vision.
How do you know you are right fit for the role?
- You have at least 2-4 years of experience. You are proficient with most of the following languages/frameworks:
- NodeJS
- AWS
- Databases (both SQL and NoSQL)
- You crave ownership. If you often find yourself raising your hand to own things end-to-end, you will likely really enjoy the ownership afforded to you as a founding engineer.
- You’re okay with ambiguity. You won’t get product requirement documents or designs for everything you’re expected to build. A stellar founding engineer will know when to ask for clarity and when to make educated assumptions. If you tend to gravitate towards more loosely scoped projects, that’s a good indicator that you’ll do well in this type of role.
- You’re multidisciplinary. A typical day might include anything from several hours of coding, to a few customer conversations, to a technical brainstorm or architecture discussion, to an interview or two.
- You operate at light speed. A great founding engineer should welcome this challenge and thrive under the pressure of intense deadlines.
What will be the hiring process?
- 2 round of technical interviews
- 2 round of behavioural interview
What will be your compensation?
- Fixed: INR 20L-30L
- Bonus: 10-30% of Fixed depending upon performance.
- Equity: 0.1%-0.2%
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2+ years of experience working with backend development.
1+ year experience in GoLang Backend Development.
Must show your previous work.
Deployed at least 3 complete products which use REST APIs.
Exposure to making Postman docs.
Knowledge/ Experience of modern authorisation mechanisms, such as JSON Web Token and cookies.
Experience in handling business requirements and translate them into technical requirements.
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- Good problem-solving skills.
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● We believe that the role of an engineer at a typical product company in India has to evolve from just working in a request response mode to something more involved.
● Typically an engineer has very little to no connection with the product, its users, overall success criteria or long term vision of the product that he/she is working on.
● The system is not setup to encourage it. Engineers are evaluated on their tech prowess and very little attention is given to other aspects of being a successful engineer.
● We don’t hold appraisals as we don’t believe that evaluation of work and feedback is a constant affair rather than every 6 or 12 months. Besides there is no better testament of your abilities than the growth of the product.
● We don’t have a concept of hierarchy and hence we don’t have promotions. All we have in Udaan are Software Engineers.
Skills & Knowledge:
○ 4-15 years of experience
○ Sound knowledge in Programming,
○ High Ownership & Impact oriented
○ Creative thinker & Implementation
○ Highly Customer Obsessed & Always Insisting on Highest Standards
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Basic Qualifications
Candidates for this role must have:
- Bachelor’s degree in computer science or a related field
- At least three years of experience writing production code of increasing complexity
- Strong understanding of computer science fundamentals, including algorithms, complexity analysis, data structures, problem solving, and object-oriented analysis and design
- Proficiency in at least one of the following: Java, C, C++, C#, Ruby, Scala, Python
- Experience refactoring code and evolving architectures
- Experience crafting unit, integration, functional and regression tests
Preferred Qualifications
- Master’s degree in computer science or a related field
- Experience developing in a Linux environment
- Experience applying service-oriented architecture techniques to production use cases
- Experience in developing secure, multi-platform mobile applications
You will be responsible for designing, developing, testing, and debugging responsive mobile and web applications.
Qualifications Required -
· Bachelor's degree or equivalent in Computers
· Experience - 3-4 Years
· Some experience with Mobile App development will be plus
Skillsets:
- Experience in with Node.js, Express.js, REST API
- Experience with NoSQL database - MongoDB
- Experience with AWS services
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