Java Developer

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 the Role

We are actively seeking talented Senior Python Developers to join our ambitious team dedicated to pushing the frontiers of AI technology. This opportunity is tailored for professionals who thrive on developing innovative solutions and who aspire to be at the forefront of AI advancements. You will work with different companies in the US who are looking to develop both commercial and research AI solutions.

Required Skills:

• Write effective Python code to tackle complex issues
• Use business sense and analytical abilities to glean valuable insights from public databases 
• Clearly express the reasoning and logic when writing code in Jupyter notebooks or other suitable mediums
• Extensive experience working with Python 
• Proficiency with the language's syntax and conventions
• Previous experience tackling algorithmic problems
• Nice to have some prior Software Quality Assurance and Test Planning experience
• Excellent spoken and written English communication skills

The ideal candidates should be able to

• Clearly explain their strategies for problem-solving.
• Design practical solutions in code.
• Develop test cases to validate their solutions.
• Debug and refine their solutions for improvement.

Key Responsibilities & Requirements

You should primarily be a backend developer or full stack developer, very good at code reviews and code optimization. Our products depend on processing large amounts of data and having fast response times is absolutely essential.

You will have the opportunity to

• Take responsibility of building systems for scale
• Manage our backend systems and database optimizations
• Assist in key decisions and design architecture that drives development across products
• Define processes and help with efficient functioning of the team
• Work with cross-functional teams to ensure the products are scalable, maintainable and secure

What we expect from you:

• We work on Ruby on Rails but you can have 2+ years of experience as backend developer in any language
• Have a solid grasp of OOP, databases and automated testing methodologies.
• Know how to manage sprint and ensure tasks are completed within the timeline
• Design and implementation of low-latency, high-availability, and performant applications
• Strong understanding of SQL databases
• Proficient knowledge of various authentication methods like JWT, OAuth etc..
• Perform peer code reviews and Code audit - Analyze existing code and remediate performance issues within existing applications

Having seen over 10x growth in 2021 alone, we are expanding our scope of products to cater to the fast growing creator economy and help creators monetize in ways beyond influencer marketing. We are also looking at tremendous growth in the next few years, standing at the verge of building something huge!

Come join our team of developers if a fast learning environment in a high growth industry excites you.

About Winkl

Please check out our product before applying to this position -
* Website - https://winkl.co
* Team - https://winkl.co/about
* Android App - https://play.google.com/store/apps/details?id=co.winkl.app&;amp;hl=en
* iOS App - https://www.winkl.co/app

Winkl is a technology company that is changing how influencer marketing is done. From a manual process earlier to an automated and data-driven process with Winkl. More on this here.

Leveraging data & technology helps Winkl scale influencer marketing to a level that wasn't possible earlier. This has helped Winkl power influencer campaigns for top brands in India like Flipkart, Amazon etc.

Culture & Expectations

* At Winkl, no one tells you what to do. We don't micromanage. We don't spoon feed. As long as you're willing to learn new things, are proactive, initiate activities on your own, make mistakes and learn from them, take responsibility, stick to your word of getting things done, we think you'd be a great fit at Winkl.
* On a day to day basis, you'll get to be an important part of a high growth startup as it scales.
* You'll receive all possible support from your team at Winkl to help you succeed. 
* Being highly accountable is a non-negotiable requirement

• The ideal candidate must have experience in enterprise application design, system performance and scalability
• 5+ year experience in web services, distributed systems, and highly available and scalable applications.
• Strong object-oriented programming skills in Java
• Very good knowledge of Core Java and J2EE and should have worked on high availability, low latency platforms.
• Ability to question status quo and identify bad design/code patterns which can impact performance and maintainability of the code.
• Excellent understanding of system design and design patterns.
• Previous experience with the Agile methodology.
• Experience in developing robust RESTful services is desirable.
• Have very good communication skills
• Have strong experience in the Spring framework.
• Good experience in SQL/Oracle
• BS degree in computer science or related fields. MS degree desired