Software 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

As a Backend Developer, you will work remotely with Sun King’s EasyBuy business unit to design and develop software that improves the operations of our field teams.

Key Responsibilities:

• Design and develop applications/systems based on wireframes and product requirements.
• Create logical and physical data models to meet application needs.
• Identify and resolve bottlenecks and bugs based on operational needs.
• Perform unit testing on code to ensure reliability, including edge cases and usability.
• Write reusable, maintainable code following DRY (Don’t Repeat Yourself) principles.
• Integrate existing tools and business systems, including external services like ticketing and communication software.
• Collaborate with team members and product managers to understand project requirements and contribute to system design.

You Might Be a Strong Candidate If You:

• Have 1-2 years of backend development experience and strong problem-solving skills, with proficiency in data structures and algorithms.
• Have a solid understanding of object-oriented programming (OOP) and expertise in Core Java.
• Have experience with databases such as SQL, MySQL, or similar.
• Have integrated web services such as SOAP, REST, JSON, and XML.
• Are familiar with RESTful APIs for linking Android applications to backend services.
• Experience with version control systems like Git is preferred but not mandatory.
• Additional knowledge of web technologies (HTML, CSS, JavaScript) and frameworks like Spring or Hibernate is a plus.

The Team You Would Join

The Global Analytics and Technology function at Sun King builds technology-enabled solutions based on data-driven insights. Our team includes data scientists, data engineers, analysts, technical architects, Android developers, web designers, backend engineers, product managers, and UI/UX developers. Together, we develop cutting-edge solutions to solve business problems for underserved populations, including:

• Last-mile delivery
• Credit underwriting and risk management
• Distribution channel digitization
• Churn management

What We Offer:

In addition to compensation and statutory benefits, you’ll receive:

• A platform for professional growth in a fast-growing, high-impact sector.
• A collaborative culture energized by Sun King employees working towards a transformative, sustainable mission.
• A global environment where you’ll engage with a diverse team from different geographies and backgrounds.
• Tailored learning pathways through the Sun King Center for Leadership to enhance your leadership and managerial skills.

Skills: 

Strong knowledge of MYSQL/PostGreSQL; Knowledge of MongoDB, Redis, Couch DB is preferred. 

Expertise in application development, databases, version control, and deployment. Skill - Node.js, 

Experience of AWS or GCP - especially services such as Lambda or google app engine 

Solid grasp of Service-oriented architecture. Web Services implementation on a medium to large scale 

Solid understanding of scaling mobile app services. Having worked the backend of an Android app is preferred 

Culture: 

Ability to work independently with minimal supervision 

Happy to deal with, and contribute to, an environment of daily builds Has worked in small teams, is versatile. Work within short timelines and be receptive to business needs. Can work closely with Digital, Product, Operations teams. 

Desirable Social Attributes: 

Has contributed to one or more Open Source projects through own initiative. Has provided a high quality answer to a question posted on StackOverflow. 

Role: 

As a Software Developer who would work independently, the candidate is expected actively acquire problems and deliver solutions as well as guide the team technically. Such a problem solver would obviously be a self starter with a high level of curiosity rather than a programming language specialist. 

He/she would be required to produce software of the highest quality through self-discipline, clear and engaged communication, and attention to detail. The role would include custom web application development on (most typically on Node.js and PHP/Python), databases (most typically MySql and MongoDb), version control (github), testing (necessarily through test scripts written before code is written), daily builds and eventual deployment onto AWS or GCP. 

Attributes of the ideal candidate: 

Highly productive software developer with the proven aptitude to understand and apply technology 

Determination to succeed despite obstacles and challenges, and a positive attitude favoring achievement of goals over open-ended investigation 

Always learning, evolving, and sharing what you know 

Inspired by complex, varied problems and rapid change 

Open-minded, flexible, and curious about new and better ideas

All candidates applying should be familiar with the following:

C#, ASP.NET, Dot Net Core, Webforms, .NET framework, Web APIs, Javascript, HTML and SQL

Designation: Software Engineer or Sr. Software Engineer

You Should Be Able To Build And Maintain:

• Applications and services using C#
• Web applications using ASP.NET Web Forms
• APIs using ASP.NET Web API
• Responsive layouts with CSS and HTML using modern browser technologies
• Interactive web applications using Javascript
• Data Access Layers using ADO.NET
• Clean and testable code
• Datastores using MSSQL
• Source Code Management with Git and GitHub

Bonus Points For:

• Good understanding of Object-Oriented Methodologies, Algorithms, and data structures.
• Solid principles and design patterns
• Experience in working on cloud-native architecture or working with Cloud vendors such as Azure, AWS
• Understanding of tools like Swagger, Postman, etc
• Experience working on Open source software
• Experience working on consumer-facing products

Salary Range: Up to INR 12,00,000 per annum

(Depending on experience and skills) (Negotiable)

Immediate joining or less than 45 days notice period preferred

About Astrum Labs:

Astrum Labs is a product-based software company, providing integrated B2B applications in the field of logistics and financial technology. Within the logistics domain, our solutions focus on export documentation, advance license management, Exim trade, cargo tracing & tracking. Under the financial technology domain, our core competency lies in financial accounting software application, along with expense management, virtual payment instruments, and fractional/token-based payments. We strongly believe in providing our customers with applications that complement the existing ecosystem, improve productivity, and streamline businesses operations. We are growing at a rapid pace, and to support this growth, we are looking for truly dedicated, motivated, and super energetic individuals to join our team. Astrum is part of Softlink Global, one of the globally recognized and leading ERP providers in the logistics industry.

To know more, visit https://www.astrumlabs.co/">https://www.astrumlabs.co/ and https://softlinkglobal.com/">https://softlinkglobal.com/

At Astrum:

• We obsess over user experience and delight
• We are out there to provide the best logistics and financial technology software applications to small, medium, and large scale businesses
• We thrive on developing a culture of learning and continuous improvement, both for people and processes
• We invest in each other's growth
• We believe in complete transparency, open dialogue, and no hierarchies
• We make objective and data-driven decisions
• We believe in taking charge and getting it done
• We give a damn about our team's well-being and growth within the company
• We encourage experiments and creativity in Technology
• We want you to be able to lead your own team or a project once you are ready
• We want you to see our vision, and feel a part of our journey

We are committed to strengthening equality, diversity, and inclusion at our workplace through an enabling environment, supportive work-life policies for employees, and a culture that welcomes differences and creates a sense of belonging. We strive to create a work environment where all employees can develop and grow to achieve their full potential.

The Perks:

• A stage to feel proud of your work
• Platform to take up higher responsibilities
• A fun work-life balance
• A chance to become part of a high growth company, keeping that Unicorn tag within our sights

Collaborate with clients and internal teams to develop appropriate solutions

• Brainstorm with team members and prove the ability to think on the fly.

Requirements

• Core Java

• Spring Boot, Spring Rest, Spring Data

• Testing framework - Junit, Mockito

• Experience in deploying applications on one of public cloud preferably Microsoft Azure. (Other

- AWS or Google Cloud)

• Experience in one of messaging platform preferably Kafka (Other - Rabbitmq or Active MQ)

• Docker

• Kubernetes

• Others – Linux, Git, Maven, CI/CD pipeline

• Experience in working with Agile teams

Good To Have

• Git (6+ years of experience)

• Develop test cases, conduct SIT, load test, and tune the performance of systems to meet

acceptance criteria.

• Perform and manage stages of the SCRUM and participate in the systems review with Project

Lead/Manager.

• Experience in the development of cloud-native applications is an added advantage.

• Experience working in Agile teams

What We Offer

• National and International Business Trips (if there is an opportunity)

• Culture of Knowledge Sharing and Training

• Modern & lively working environment

• Opportunity to write books, participate in conferences

• International assignment

Looking candidated from service base or service division of any company.
Minimum Qualification​:

• Hands-on working on Java ( {Language understanding - Java 8, Lambdas, Collections, popular frameworks & libraries}, JVM, GC tuning, performance tuning)
• Worked on REST frameworks/libraries like Spring MVC, Spring Boot, Dropwizard, REST Express etc
• Worked on Relational data stores viz. MySQL, Oracle or Postgres
• Worked on Non-relational data stores viz. Cassandra, HBase, Couchbase, MongoDB etc
• Worked on caching infra viz. Redis, Memcached, Aerospike, Riak etc
• Worked on Queueing infra viz. Kafka, RabbitMQ, ActiveMQ etc

Responsibilities

• Designing and implementing new features and functionality
• Establishing and guiding the website’s architecture
• Ensuring high-performance and availability, and managing all technical aspects of the CMS
• Helping formulate an effective, responsive design and turning it into a working theme and plugin.

Skills and Qualifications

• Good understanding of front-end technologies, including HTML5, CSS3, JavaScript, jQuery
• Experience building user interfaces for websites and/or web applications
• Experience designing and developing responsive design websites
• Comfortable working with debugging tools like Firebug, Chrome inspector, etc.
• Ability to understand CSS changes and their ramifications to ensure consistent style across platforms and browsers
• Ability to convert comprehensive layout and wireframes into working HTML pages
• Knowledge of how to interact with RESTful APIs and formats (JSON, XML)
• Strong understanding of PHP back-end development

Designation - Nodejs Developer 

Salary - 15-35k (Negotiable)

Experience - 2-5 years

Location - Indore (Remote work also available for full time)

Positions- 4

Must have good communication skills

Immediate joiners required

Job Description-

• Integration of user-facing elements developed by front-end developers with server-side logic
• Writing reusable, testable, and efficient code
• Design and implementation of low-latency, high-availability, and performant applications
• Implementation of security and data protection
• Integration of data storage solutions 

Skills and Qualification:

• Strong proficiency with JavaScript 
• Must have 2 years of working experience in MongoDB database
• Knowledge of Node.js and frameworks available for it Understanding the nature of asynchronous programming and its quirks and workarounds
• Good understanding of server-side CSS preprocess
• Basic understanding of front-end technologies, such as HTML5, and CSS3
• Understanding accessibility and security compliance 
• User authentication and authorization between multiple systems, servers, and environments
• Integration of multiple data sources and databases into one system
• Understanding fundamental design principles behind a scalable application
• Understanding differences between multiple delivery platforms, such as mobile vs. desktop, and optimizing output to match the specific platform
• Creating database schemas that represent and support business processes
• Implementing automated testing platforms and unit tests
• Proficient understanding of code versioning tools, such as Git

1. 2+ years of experience building REST APIs with Java
2. 1+ years of experience in maintaining REST APIs documentation.
3. 2+ years of experience programming and delivering in a production environment
4. Expertise working with data structures and algorithms
5. Proficiency in object-oriented programming and experience applying modern design patterns.