Backend Engineer

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.

We are looking for experienced Odoo Developers with good development skills in Python. Candidates should have hands-on experience in end to end implementation of the custom modules in Odoo.

RESPONSIBILITIES:

• Develop and deploy ERP/ web applications using OpenERP/ Odoo.

• Customize/ develop various modules such as Accounting, POS Sales & CRM, inventory, Purchasing, , Invoice, Website, Google map, Warehouse, MRP, HR, etc.

• Customize various modules and integrate services/ products ranging from payment gateways to hardware devices with Odoo.

• Understand Functional requirements from clients. Provide GAP analysis and transform them into technical requirements.

• Functional knowledge of ERP modules like Accounting, Stock, CRM, Inventory, HR, Sales, Purchasing, Manufacturing, E- Commerce, and Payment gateway.

• Experience in Migrations, Odoo end user training.

• Knowledge of OOP concepts, SQL, HTML and JavaScript.

• Experience in hosting on AWS or other cloud service providers

• Ability to understand client requirements and translate them into business solutions.

• Develop and deploy ERP modules from scratch

• Adopt new and emerging technologies to provide solutions to client needs. Cater to time difference need

• Identify technical issues and provide solutions

• Testing support.

• Develop and customize reports based on client s specifications in the modules like Accounting, Inventory, Manufacturing and HR. Work on Odoo's internal BI reporting tool for live reports

• Skills

• Strong familiarity with the Odoo framework is mandatory.

• Should have a solid knowledge of Python and programming concepts. Contribution for Open Source Projects will be advantageous.

• Good problem solving and analytical skills

Education:

• Bachelor's (Preferred)

• Understand the fundamentals of Software Engineering, such as Data Structures, Algorithms, Design Patterns
• Ability to write Java applications using Spring, Springboot or any other microservices frameworks
• Experience in the development of REST applications, in Java or Kotlin
• Capable of writing effective APIs
• Solid knowledge of JVM fundamentals such as classloading, memory management, garbage collection
• Demonstrated experience in platform API design and development
• Knowledge on microservice and event-driven architecture
• Experience in working with version control frameworks such as Git (preferable), SVN
•      Experience with NoSQL databases (MongoDB or Cassandra) & Relational Databases
• Solid understanding of TDD & Agile principles such as CI / CD, with a proven track record of implementing solutions centred around those concepts
• Excellent communication, collaboration, reporting, analytical and problem solving skills

THE POSITION:

- 3+ years of relevant experience in designing & implementing scalable, resilient backend microservices

- Expert at any backend programming language (Python/GoLang preferrable) and has exposure to API design and scalable architecture

- Hands-on experience on a couple of RDBMS/NoSQL/In-memory DBs

- Great database modelling skills

- Ability to choose the right algorithm, data-structure, and design pattern for the given problem statement

- Knowledge of any cloud based platform like AWS or GCP and scaling on the go

- Understanding of various application security principles and experience with building applications secure by design

QUALIFICATION:

                - We don't care about which college you are from, if you have the power to convert coffee into code, we got you.

We are looking for strong Backend developers to join our growing Team and help build Software applications and Tools that help streamline enterprise processes and build efficiency.

Roles & Responsibilities:

-Well versed with Javascript / Typescript, Node.js, Node.js frameworks like Nest.js, express.js, Postgres DB (relational databases), Redis / Memcache, Queues.