
About Sun King
Sun King is the world’s leading off-grid solar energy company, delivering energy access to 1.8 billion people without reliable grid connections through innovative product design, fintech solutions, and field operations.
Key highlights:
- Connected over 20 million homes to solar power across Africa and Asia, adding 200,000 homes monthly.
- Affordable ‘pay-as-you-go’ financing model; after 1-2 years, customers own their solar equipment.
- Saved customers over $4 billion to date.
- Collect 650,000 daily payments via 28,000 field agents using mobile money systems.
- Products range from home lighting to high-energy appliances, with expansion into clean cooking, electric mobility, and entertainment.
With 2,800 staff across 12 countries, our team includes experts in various fields, all passionate about serving off-grid communities.
Diversity Commitment:
44% of our workforce are women, reflecting our commitment to gender diversity.
About the role:
The Backend Developer works remotely as part of the technology team to help Sun King’s EasyBuy business unit design and develop software to improve its field team operations.
What you will be expected to do
- Design and develop applications/systems based on wireframes and product requirements documents.
- Design and develop logical and physical data models to meet application requirements.
- Identify and resolve bottlenecks and bugs based on operational requirements.
- Perform unit tests on code to ensure robustness, including edge cases, usability, and general reliability.
- Write reusable and easily maintainable code following the principles of DRY (Don’t Repeat Yourself).
- Integrate existing tools and business systems, both in-house and external services, such as ticketing software and communication tools.
- Collaborate with team members and product managers to understand project requirements and contribute to the overall system design.
You might be a strong candidate if you have/are
- Have development experience: 1-2 years backend development experience and have strong problem-solving abilities, proficiency in data structures, and algorithms.
- Have a profound grasp of object-oriented programming (OOPS) standards and expertise in Core Java.
- Have knowledge of SQL, MySQL, or similar database management.
- Have Experience in integrating web services, such as SOAP, REST, JSON, and XML.
- Have familiarity with RESTful APIs for linking Android applications to backend services.
- Have preferred experience with version control systems like Git, but not mandatory.
- Have additional knowledge of web technologies like HTML, CSS, JavaScript, and frameworks like Spring or Hibernate would be advantageous.
What we offer (in addition to compensation and statutory benefits):
- A platform for professional growth in a rapidly expanding, high-impact sector.
- Immerse in a collaborative culture, energized by employees of Sun King who are collectively motivated by fostering a transformative, sustainable venture.
- A genuinely global environment: Engage and learn alongside a diverse group from varied geographies and backgrounds.
- Tailored learning pathways through the Sun King Center for Leadership to elevate your leadership and managerial capabilities.

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


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.
Similar jobs
TAPPP is leading the charge in bringing premium digital entertainment content & live sports to global consumers via its prepaid platform. TAPPP is available across platforms via the Web, Mobile and Tablets. Building out this brand presents significant product and engineering challenges. At the centre of solving those challenges is the TAPPP Product Engineering team which is responsible for the TAPPP product end to end.
We are looking for a coding enthusiast who love working with code and developing software systems.
You will be a part of the core product development team that is responsible for building different components of the TAPPP platform. You will be responsible for designing, coding, reviewing, testing, bug-fixing different modules of the software product that needs to work seamlessly across different environments.
The organization is flat, process is minimal, individual responsibility is big, and there is an emphasis on keeping non-productive influences out of the everyday technical decision making process. Upholding these philosophies will be imperative as we execute our aggressive plan of global expansion over the next 2 years. The position is based in Mumbai, India.
Here is what we are looking for:
• Deep product development experience and sound understanding into these technologies
• Java/J2EE
• Spring
• Hibernate
• RESTful API's
• MySQL
• Tomcat 7
• Exposure on Grails & Amazon AWS will be a plus point
• Strong independent contributor
• An unquenchable desire to learn, attention to detail with a can-do attitude
• Comfortable working in a start-up environment


Responsibilities:
- Ensure the quality of architecture and design of systems.
- Functionally decompose complex problems into simple, straight-forward solutions.
- Analyze and improve data quality and metrics.
- Fully and completely understand system interdependencies and limitations.
- Leverage knowledge of internal and industry in design decisions.
- Assist in the career development of others, mentoring on advanced technical issues and helping managers guide the career growth of their team members.
- Exert technical influence over multiple teams, increasing their productivity and effectiveness by sharing your deep knowledge and experience.
- Skilled in translating high level abstract business requirements into software design, designing systems specifications, standards, and programming
- Contribute to Architectural blueprints and Design for the software solutions
- Mentor team on engineering best practices such as writing clean code, designing scalable, reliable and performant software solutions, set and ensure compliance to software quality standards etc.
- Be a role model for the team with innovative thinking, passion for continuous learning and contributions to the project.
Qualifications, Skills & Experiences
- BE / B.Tech /M.Tech in Computer Science or a related field
- Minimum 7+/5+ years of experience building large scalable systems
- Minimum 2+ years of recent experience in building products on cloud is a plus
- Knowledge of asynchronous programming and WebAPI development is required
- Knowledge and awareness of cloud/ application security is must (OWASP at the minimum)
- Strong knowledge in OOPS with C#, .Net(or Java) with SQL Server or any RDBMS
- Strong experience in architecting and building multi-threaded, distributed systems.
- Strong knowledge of data structures, algorithms, and designing for performance.
- Ability to achieve stretch goals in a highly innovative and fast paced environment.
- Extensive experience of mentoring junior engineers to success.
- Experience with Microservices Architecture is a plus
- Working knowledge of CI/CD pipelines and AWS/Azure cloud services is plus
- Hands on experience of building products for unix systems in addition to windows is a plus
- Excellent Communication


Job Description: Backend Developer – Design Qandy
Who are we?
Design Qandy delivers personalised luxury interior design to India’s discerning homeowners and corporates. Led by highly admired luxury brand builders, internationally trained designers, world-class technology professionals and curated teams of turnkey project execution specailists. We seek perfection in design and are committed to bringing back trust and excitement in the design process.
Know more about us on designqandy.com and https://instagram.com/designqandy?igshid=YmMyMTA2M2Y=
Our work culture?
We are a lean team of high performing go-getters, we take ownership in our roles and lead with knowledge. Debates and discussions are an important part of our culture and we encourage people to bring unique perspectives to their conversations. Most importantly, we love solving problems.
Each day is inspiring and we encourage you to apply for this role and experience it for yourself.
What would you be required to do?
· Write code and tests, build prototypes, solve issues, profile, and analyze bottlenecks
· Design performance gauging, building robust APIs to support mobile and desktop clients
· Manage and optimize scalable distributed systems on the cloud
· Optimization of web applications for performance and scalability
· Develop automated tests to ensure business needs are met and allow for regression testing
· Participate in the entire application lifecycle, focusing on coding and debugging
· Write clean code to develop functional web applications
· Troubleshoot and debug applications
· Perform UI tests to optimize performance
· Manage cutting-edge technologies to improve legacy applications
· Collaborate with Front-end developers to integrate user-facing elements with server-side logic.
· Gather and address technical and design requirements
· Provide training and support to internal teams
· Build reusable code and libraries for future use
What skills we are looking for?
· Good communication skill to communicate with stakeholders, project managers, quality assurance teams, Regularly and other developers regarding progress on the long-term technology roadmap
· Curious and progressive mind to Create and maintain workflows with teams to provide visibility and to ensure workload balance for consistent visual designs
· Good technical knowledge to Produce quality code, raising the bar for the whole team on quality and speed
· Through analytical skills to Recommend system solutions by comparing advantages and disadvantages of custom development and purchase alternatives
Skills Needed:
· PHP Laravel Framework, PHP Design Patterns.
· Proficient in MySQL, PostgreSQL, MongoDB
· APIs, REST API, SOAP API, API Security, Open APIs
· Push Notifications, Laravel Events, Queue, Observers
· Excellent foundation in computer science, algorithms, and web design
· Experience writing highly secure web applications
· Experience with core AWS web-enabling technologies
· Growth mindset, challenging status quo to find new solutions and out-of-the-box ideas
· Experience designing RESTful APIs, specifically for mobile apps
· Computer science degree or equivalent experience
· Experience leading a team
· 3-6 Years’ experience in back-end development.
We are looking for a Back-end developer to join our engineering team and help us develop and maintain various software products.
Experience: 0-2 years
Prerequisites:
- In-depth understanding of web development process
- Familiarity with Java and Spring frameworks preferably Spring Boot
- Familiarity with Node JS
- Basic understanding of front-end technologies, such as JavaScript, HTML, CSS.
- Experience with working on REST API (GET, POST, PUT, PATCH, DELETE, UPDATE)
Job Description
The duties and responsibilities of a selected applicant would include:
- Participate in the entire application lifecycle, focusing on coding and debugging.
- Design and implement low-latency, high-availability, and performance applications.
- Develop back-end components to improve responsiveness and overall performance
- Collaborate with Front-end developers to integrate user-facing elements with server-side logic
- Perform UI tests to optimize performance
- Test and debug programs
- Implement security and data protection solutions
If you have the desire to be a part of an exciting, challenging,+ and rapidly-growing company, and create the finest apps in a flourishing industry, please send in your applications on:
Job Description
- Design & implement backend APIs
- Mentor junior developers technically.
- Actively work to reduce tech debt in the backend
- Work towards more stability & scalability of the backend
- Tech stack - Java, AWS etc.
Eligibility
- 2-8 years of product company experience
- Advanced understanding of AWS stack
- Prior knowledge of solving problems at scale.



- Minimum 2 years of experience in Core PHP , and hands on experience in any MVC Framework.
- Should have hands on experience or knowledge in PHP Frameworks like Codeigniter/ Laravel/ CakePHP/ Yii .
- Should have knowledge about OOPS Concept.
- Good knowledge in HTML, AJAX, JQuery & MYSQL.
- Minimum 2 years of experience in Core PHP , and hands on experience in any MVC Framework.
- Should have hands on experience or knowledge in PHP Frameworks like Codeigniter/ Laravel/ CakePHP/ Yii .
- Should have knowledge about OOPS Concept.
- Good knowledge in HTML, AJAX, JQuery & MYSQL.
industry experts.
● YOu will join the mission to create positive impact on millions of peoples lives
● You get to work on the latest tech stack and a team that is highly experimental.
● YOu get to work on AWS with a scalable, serverless and micro-services architecture.
● You get to work with super humans (Psst: Look up these super human1,super human2)
● You get to work in an accelerated learning environment
● All is possible when backed by investors who are committed and believe in the power of
decentralization of data using block chain technology
What you will do
● You will write clean and optimised codes that are well documented
● You will collaborate with and also mentor team members and
● You will contribute to the development effort of several Web Applications (internal as well
as customer-facing)
● You will adhere to best coding practices in front-end development across the team
● You will be agile, research oriented and experiment in learning new product disciplines.
● You will be responsible for the stability of your project and overall system health
post-release
● You will organize code reviews with peers and participate in tech brainstorming sessions.
What we need
● A Minimum 1 years of experience as a back-end engineer and minimum 1 years of
experience using Node JS or using Typescript/Java/Python/Golang.
● Skills to deliver quality APIs and systems using Node JS, Postgres and ElasticSearch
● Experience writing unit test cases
● Experience building Rest APIs using any ORM, bonus for GraphQL APIs
● Understanding of authentication patterns, logging and error handling
● Preferred having experience with working knowledge of React JS, AWS Lambda, API
Gateway, Pub-Sub model
● Understanding of design patterns and event driven architecture is an added advantage.

