
Principal Engineer - Backend
at Profitable E-comm+NBFC company close to becoming a Unicorn.
Are you looking for a super-challenging role designing backend systems that scale to 1000+ TPSs in one of India's fastest growing, profitable near-Unicorns with businesses spanning Lending, E-comm and UPI? Then this is the role for you.
Client Company is a profitable, rapidly scaling unicorn which is extremely well capitalized. Client has a very strong moat in the consumer lending space on the back of which it is entering into additional large markets such as E-comm and UPI.
Client company is now entering its next phase of growth from a fast-scaling startup to a robust, high-scale financial platform serving millions of users daily.
You'll design systems built for 10x100x growth, make the key technical trade-off calls, and stay deeply hands-on. Beyond building, you'll mentor engineers and work directly with founders and product teams to translate business goals into scalable, reliable systems.
This role is an opportunity to:
- Shape the next-generation architecture for a high-throughput fintech system
- Build systems designed to scale 10x100x from current volumes
- Solve real-world problems across performance, reliability, and financial-grade security
Responsibilities
- Design and evolve the platform architecture to support 10x100x growth
- Own systems end-to-end from the first design decision to production impact
- Lead system design discussions and set the long-term technical direction for the platform
- Identify scale bottlenecks early and drive solutions
- Mentor and elevate engineers through design reviews, code quality, and architectural thinking
- Partner directly with founders and product teams to turn business priorities into scalable systems
- Operate with high ownership in a fast-paced environment where priorities evolve quickly
- Drive projects independently own timelines, coordinate with teams, and see delivery
- Conduct rigorous code reviews and champion engineering best practices across the team
- Proactively identify gaps in the system and come up with concrete approaches to address them
- Solve technical problems across the company not just confined to a single pod
- Challenge existing architecture with data and reasoning push back when its the right call, and drive adoption of better approaches.
Requirements
- 7-12 years of experience in backend or platform engineering
- Strong computer science fundamentals (preferably from IIT, BITS, NITs)
- Strong proficiency in backend development (Node.js, Java, Go, or equivalent)
- Proven experience scaling systems through high-growth startup phases (1→10 or beyond)
- Track record of building and owning critical platforms or systems from scratch
- Exposure to high-volume transactional systems; fintech or lending is a strong plus
- Bias for action - moves fast, makes sound decisions, owns outcomes end-to-end
- Comfortable navigating ambiguity and evolving priorities in a startup environment
- Strong problem-solving skills ability to break down complex technical challenges and arrive at pragmatic, well-reasoned solutions
- Hands-on experience with platform engineering developer tooling, shared services, infrastructure abstractions, or internal platforms

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About the company
The client is building an AI-native platform for modern law firms.
Legal work is evolving rapidly, but much of the industry's workflow continues to rely on fragmented software and manual processes. The team is building an intelligent platform that helps law firms streamline work across the entire legal lifecycle, including document screening, drafting, filing, research, compliance, and other high-value legal workflows.
Their founding team combines deep expertise across both law and technology, giving us a unique perspective on how AI can fundamentally reshape legal operations while maintaining the precision and reliability that the profession demands.
We're looking for engineers who want to build products from first principles, move quickly, and help define the future of AI in legal technology.
About the role
We're hiring a Founding Software Engineer to help build the core platform from the ground up.
This is a high-ownership role. You'll work across backend systems, AI infrastructure, product architecture, and deployment, collaborating directly with the founders to design and ship features that reach customers quickly.
If you enjoy solving hard engineering problems, shipping fast, and working in a small, ambitious team, we'd like to talk.
What You'll Build
- AI-powered legal workflows for law firms
- Agentic systems for drafting, screening, and legal document analysis
- Reliable backend services and APIs
- Retrieval and knowledge systems for legal intelligence
- Evaluation pipelines to improve AI quality and reliability
- Internal developer tooling and scalable platform infrastructure
What We're Looking For
- 3-5 years of software engineering experience
- Strong Proficiency in at least one backend language: Python (FastAPI or Django), or Node.js
- Experience working with at least one database: MongoDB, PostgreSQL, MySQL, or another relational database
- Understanding of modern AI application architecture, including concepts such as: Agentic systems AI SDKs Retrieval-Augmented Generation (RAG) Prompt engineering Evaluation frameworks (Evals)
- Strong system design and problem-solving skills
- Ability to ship production-quality software quickly
- High ownership and bias toward execution
- Comfortable learning new technologies as the product evolves
Nice to Have
- Experience building products in Compliance, FinTech, RegTech, or LegalTech
- Experience deploying and operating AI-powered production systems
- Familiarity with cloud platforms and modern deployment workflows
- Experience working in an early-stage startup
What We Value
- High agency
- Strong engineering fundamentals
- Curiosity and continuous learning
- Fast execution without compromising quality
- Clear communication and collaborative problem solving
Why Join Us
- You'll be joining at the earliest stage of the company and will help shape both the product and the engineering culture.
- This is an opportunity to work directly with founders who combine legal and technical expertise, solve meaningful problems for the legal industry, and build AI systems that are used every day by legal professionals.
- If building from zero excites you more than maintaining legacy systems, we'd love to hear from you
Must Have Skills:
- Overall 10+ years of experience in application development using Golang.
- Experience in designing and developing REST based services / Microservice development.
- Ability to design scalable, robust, and error-tolerant systems.
- Understanding of software architecture and distributed systems.
- Proficient in writing efficient and optimized algorithms under time constraints.
- Skilled in developing solutions that balance performance, readability, and maintainability.
- Ability to effectively communicate coding decisions and rationale during problem-solving discussions.
- Hands-on experience with queuing mechanisms such as Kafka or RabbitMQ.
- Candidates should be adaptable and eager to quickly learn and integrate into the existing tech stack if they lack direct experience.
- Candidate should have good communication skills (written and verbal).
- Experience with delivering projects in an agile environment using SCRUM methodologies.
Good to have:
- Experience to AWS, CI/CD, DevOps.
- Experience using container management tools such as Kubernetes, Docker and Rancher.
- Any one of these data store Cassandra, Postgres, Couchbase, or other NoSQL servers.
What You will do
● Create beautiful software experiences for our clients using design thinking, lean and agile methodology.
● Work on software products designed from scratch using the latest cutting edge technologies, platforms and languages such as JAVA, python, Javascript, GoLang and Scala.
● Work in a dynamic, collaborative, transparent, non-hierarchical culture.
● Work in collaborative, fast-paced and value-driven teams to build innovative customer experiences for our clients.
● Help to grow the next generation of developers and have a positive impact on the industry.
Basic Qualifications
● Experience: 4+ years.
● Hands-on development experience with a broad mix of languages such as JAVA, Python, Javascript etc.
● Server-side development experience mainly in JAVA, (Python and nodeJS can be considerable)
● UI development experience in ReactJS or AngularJS or PolymerJS or EmberJS or Jquery etc. are good to have.
● Passion for software engineering and follow the best coding concepts. ● Good to great problem solving and communication skills.
Nice to have Qualifications
● Product and customer-centric mindset.
● Great OO skills, including design patterns.
● Experience with devops, continuous integration & deployment.
● Exposure to big data technologies, Machine Learning and NLP will be a plus.
Benefits
● Competitive salary.
● Work from anywhere.
● Learning and gaining experience rapidly.
● Reimbursement for basic working set up at home.
● Insurance (including a top up insurance for COVID).
Location
Remote - work from anywhere
• BE/B. Tech. Computer Science or MCA from a reputed University.
• 8+ Years of experience in software development, with emphasis on JAVA/J2EE Server side
programming.
• Hands on experience in Core Java, Multithreading, RMI, Socket programing, JDBC, NIO,
webservices and Design patterns.
• Should have Knowledge of distributed system, distributed caching, messaging frameworks, ESB
etc.
• Knowledge of Linux operating system and PostgreSQL/MySQL/MongoDB/Cassandra database is
essential.
• Additionally, knowledge of HBase, Hadoop and Hive are desirable.
• Familiarity with message queue systems and AMQP and Kafka is desirable.
• Should have experience as a participant in Agile methodologies.
• Should have excellent written and verbal communication skills and presentation skills.
• This is not a Fullstack requirement, we are purely looking out for Backend resources.
1. Work experience between 3 years to 9 years in building large scale high user traffic consumer facing applications with desire to work in a fast paced startup.
2. Knowledge on reactive and asynchronous programming is preferable. If you have worked with coroutines, goroutines, high concurrency or optimized number of threads for processing on your backend server you could be a good fit.
3. Extremely proficient at writing performant, scalable and production ready code in Kotlin, Java (8 or above, comfortable with concepts like lambda, streams, multithreading etc), Elixir, Rust, or Golang. Should be familiar with static code analysis, code coverage and code reviews.
4. Experience with NoSQL DBs like MongoDB, Cassandra, Redis or Aerospike is required. Knowledge of graph DBs like Neo4j is preferred.
5. Strong in algorithms, problem solving and data structures.
6. Knowledge of TDD and experience with building applications integrated with CI-CD pipelines (automated build, tests and deployments).
7. Exposure to micro-services with good understanding of containers, kubernetes, logging, alerting and monitoring. Inter services communication. Should know how to handle multiple versions of APIs.
● Be responsible for programming and software development using various programming languages and related tools and frameworks, reviewing code written by other programmers, requirement gathering, bug fixing, testing, documenting and implementation.
● Good understanding of GoLang and microservices
● To take up development and deployment of native code to manage the customer facing platforms
● Explain complex technical issues to project managers, developers, application leads and architects in an easy to understand manner, and recommend clearly thought out solutions.
● Knowledge of Integration Design patterns for building middleware systems from the ground up
● Knowledge of Web Services Interoperability, standards and ability to suggest, criticize and formulate solutions in a multi-vendor and architecture discussions.
● Develop solutions by designing system specifications, standards and programming
● Troubleshoot issues and provide bug fixes
● Knowledge of Security, Logging, Auditing, Policy Management and Performance Monitoring and KPI for end-to-end process execution
● Provide status updates and reporting metrics to the program leadership and contribute towards on-time and on-budget delivery
Job Responsibilities:
- Developing and installing software solutions.
- Designing, implementing and delivering high quality Software project in JAVA, SQL / Oracle, J2EE and other JAVA technologies.
- Participate in detailed level in design, coding, code walk through, peer code reviews and unit testing, System Testing, UAT, Demos, POCs, installation, maintenance of Software modules.
- Software prototype.
- System Architecture.
- Software Design Document.
- User interfaces to be developed as per UX guidelines Code files ensuring coding guidelines followed.
- Code review artefacts during peer code review.
- Test plan and Test Cases.
- Installation / Deployment document Release Document.
- Technical Documentation.









