Develop and operate backend systems using Java, Python, AWS, microservices, databases, queues, and event-driven architectures. Responsibilities include designing scalable services, integrating third-party APIs, improving performance and observability, managing production Docker deployments, conducting incident reviews, writing architecture documentation, mentoring engineers, and owning systems through launch, on-call, and ongoing optimization. The role also requires daily use and review of AI-assisted coding tools.
Job location: India (Remote)
About the role:
The SDE-3 Backend will work as part of the Digitization and Automation team to help 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 automation, curiosity about advances in products
and strong coding skills for our in-house software development team.
About the role:
The SDE-3 Backend will work as part of the Digitization and Automation team to help 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 automation, curiosity about advances in products
and strong coding skills for our in-house software development team.
What you will be expected to do
● Minimum 4+ years of experience in Java and Python, with hands-on expertise in frameworks such as
Spring Boot and Django/FastAPI.
● Expertise in AWS, with working experience in Lambda, SQS, S3, EC2 (Linux-based VMs), Load Balancer,
and RDS
● Expertise in SQL: query plans, indexing, locking, primary–replica architecture, and schema changes on
live tables
● Prior experience working with Redis
● Experience with microservices and distributed, event-driven system design: webhooks, queues, and
third-party API integrations
● Observability experience with Grafana and Prometheus/Loki, or an equivalent stack
● Experience running Docker in production (images, Compose, and runtime configs)
● Working experience with message brokers and event-streaming systems such as Kafka or RabbitMQ
● Hands-on experience with AI-assisted coding tools (e.g., Claude Code, GitHub Copilot, Cursor) in
day-to-day development
Spring Boot and Django/FastAPI.
● Expertise in AWS, with working experience in Lambda, SQS, S3, EC2 (Linux-based VMs), Load Balancer,
and RDS
● Expertise in SQL: query plans, indexing, locking, primary–replica architecture, and schema changes on
live tables
● Prior experience working with Redis
● Experience with microservices and distributed, event-driven system design: webhooks, queues, and
third-party API integrations
● Observability experience with Grafana and Prometheus/Loki, or an equivalent stack
● Experience running Docker in production (images, Compose, and runtime configs)
● Working experience with message brokers and event-streaming systems such as Kafka or RabbitMQ
● Hands-on experience with AI-assisted coding tools (e.g., Claude Code, GitHub Copilot, Cursor) in
day-to-day development
You might be a strong candidate if you have/are
● Lead incident RCAs, reasoning from what changed against a baseline rather than from snapshots
● Write design docs and architecture maps
● Mentor engineers through code review and pairing
● Own systems after launch, including on-call, runbooks, and cost
● Use AI coding assistants every day, applying the judgement to review, test, and take ownership of the
code they help generate
● Design and build applications and systems from wireframes and product requirements documents
● Identify and fix bottlenecks and bugs according to operational requirements
● Design and develop logical and physical data models that meet application requirements
● Build for scalability, performance, service robustness, and cost trade-offs
● Create prototypes and proofs of concept for iterative development
● Take complete, end-to-end ownership of projects and their development cycle
● Write design docs and architecture maps
● Mentor engineers through code review and pairing
● Own systems after launch, including on-call, runbooks, and cost
● Use AI coding assistants every day, applying the judgement to review, test, and take ownership of the
code they help generate
● Design and build applications and systems from wireframes and product requirements documents
● Identify and fix bottlenecks and bugs according to operational requirements
● Design and develop logical and physical data models that meet application requirements
● Build for scalability, performance, service robustness, and cost trade-offs
● Create prototypes and proofs of concept for iterative development
● Take complete, end-to-end ownership of projects and their development cycle
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.
About
Sun King is the world’s leading off-grid solar energy company, combining cutting-edge product design, fintech, and field operations to deliver energy access for the 1.8 billion people who live without an affordable and reliable electric-grid connection.Sun King has built a new kind of energy utility: distributed, green, customer-centric, and affordable. We bring clean, reliable, decentralized energy directly into people’s lives — from solar kits that provide first-time energy access to multi-kilowatt systems that serve both off-grid users and grid-connected customers powering larger homes, schools, hospitals, farms, offices, and light manufacturing.Already, 25 million homes and businesses rely on Sun King for electricity supply and the appliances and services it enables: lighting, televisions, fans, refrigeration, and smartphones. Sun King combines energy generation, energy-efficient appliances, installation, and financing into one seamless offering. Think of it as a distributed utility, designed for wherever energy is needed and designed to scale with its users as incomes and energy needs grow.Sun King makes solar products affordable to low-income households and businesses via ‘pay-as-you-go’ (PAYG) purchase financing. Sun King installs solar after customers pay a small deposit. Customers then make small, manageable payments of as little as US $0.14 a day via mobile money or cash.Instead of paying for expensive, polluting, and health-damaging kerosene for lighting or diesel for power, customers unlock savings through accessing solar power and after one to two years of payments, customers own their solar equipment outright.Sun King collects payments digitally through mobile money systems and its 35,000 field agents — over 1 million payments each day. To date, Sun King has extended more than $1.4 billion in PAYG loans to customers.Sun King began by powering homes and businesses with solar systems delivered through PAYG financing. Now, we’re using the same model to make smartphones and clean cooking equipment affordable: helping households connect to the digital economy and transition from wood-based fuels to modern, sustainable alternatives.Sun King employs 3,500 full-time staff in 14 countries, with specialties spanning product design, data science, logistics, customer service, sales, software, operations, and more — all with a passion to serve off-grid families. Sun King is committed to gender diversity in the workplace. Women represent 42% of Sun King’s workforce.
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What you need to know about the Delhi Tech Scene
Delhi, India's capital city, is a place where tradition and progress co-exist. While Old Delhi is known for its rich history and bustling markets, New Delhi is defined by its modern architecture. It's clear the region places a strong emphasis on preserving its cultural heritage while embracing technological advancements, particularly in artificial intelligence, which plays a central role in shaping the city's tech landscape, fueled by investments in research and development.
