Job Description

Location: Mumbai, Maharashtra

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Company: Weaver

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Experience: 3–8 years

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About Weaver

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Weaver is redefining affordable housing finance in India.

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Launched in 2025, Weaver acquired two profitable NBFCs—Centrum Housing Finance and Capital India—giving us an established lending business with approximately ₹2,000 Cr in AUM and a presence across 150+ branches.

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Backed by more than $170M from investors including Lightspeed and Premji Invest, we combine the foundation of a proven financial-services business with the opportunity to build its technology and product ecosystem from a clean slate.

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Our ambition is to use technology, data and decision intelligence to make homeownership faster, more transparent and more accessible for families across Tier-2 and Tier-3 India.

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The opportunity

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- This is an opportunity to help build the core technology engine of a up-to-date housing finance company.
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- You will design systems supporting customer onboarding, loan origination, credit decisioning, documents, workflows, payments, external integrations, servicing and collections.
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- The challenge is not simply to digitise an existing process. It is to understand how a financial institution works and design reliable systems that make better decisions, eliminate operational friction and scale with the business.
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What you'll do

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- Design business domains, service boundaries, data models and system interactions.
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- Build scalable and maintainable backend services using Python.
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- Develop core capabilities for the Loan Origination System, Business Rules Engine, workflows, work queues and scheduled processes.
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- Model long-running financial processes with clear states, transitions, controls and recovery mechanisms.
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- Design clean and well-documented APIs for web applications, mobile applications, partners and internal platforms.
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- Build resilient integrations with lenders, banks, payment systems, bureaus,



KYC providers, account aggregators, eSign providers and external agencies.
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- Handle distributed-system concerns such as idempotency, consistency, retries, concurrency and reconciliation.
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- Build event-driven processes and ensure operational systems produce reliable business events.
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- Integrate rules, analytical models and decision intelligence into business workflows.
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- Design for security, consent, auditability, observability and regulatory requirements.
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- Write production-quality code supported by effective automated testing.
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- Own features through design, development, release, monitoring and production improvement.
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- Collaborate closely with product, UI, data, QA and business teams.
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What we're looking for

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- 3–8 years of backend software-development experience.
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- Strong proficiency in Python.
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- Strong understanding of software design, object-oriented programming, SOLID principles and common design patterns.
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- Experience designing APIs, backend services and data models.
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- Sound understanding of relational databases, transactions and data consistency.
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- Experience reasoning about distributed systems, asynchronous processing and failure scenarios.
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- Ability to design maintainable systems from ambiguous business requirements.
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- Familiarity with cloud infrastructure, containers, monitoring, security and automated delivery.
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- Strong debugging and production problem-solving capability.
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- High standards for code quality, testing and maintainability.
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- Clear communication and an ability to estimate realistically and surface blockers early.
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- Curiosity and willingness to learn new ways of building software.
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- Good to have
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- Experience with FastAPI, Django or Flask.
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- Experience with AWS, Kubernetes/EKS or event-streaming platforms.
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- Exposure to lending, banking, fintech or another regulated industry.
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- Experience building rules engines, workflow systems, payment integrations or reconciliation platforms.
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- Exposure to AI or machine-learning capabilities in production systems.
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These are advantages, not a checklist. Strong system-design ability and engineering fundamentals matter more than familiarity with every technology we use.

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Building in an AI-native environment

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Weaver is an early adopter of agentic software development. Our teams use frontier models across architecture, implementation, testing, review, documentation and production operations.

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Previous experience with agentic development is not required. You will receive access to modern tools, generous frontier-model usage and support from a team actively developing new ways of building high-quality software.

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We expect you to bring strong engineering fundamentals, critical thinking and ownership. We will help you learn how to apply those strengths in an AI-native development environment.

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Why join Weaver?

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- Build consequential systems from a clean slate.
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- Work within an established, profitable business with patient capital.
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- Influence foundational product and architecture decisions.
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- Learn agentic software development alongside an early-adopter team.
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- Work directly with business leaders, domain experts and frontline users.
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- Solve difficult system-design and decision-intelligence problems.
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- Build for quality, reliability and long-term scale.
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- Help families in smaller cities achieve homeownership.
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📌 Sr Backend Developer - Python (Mumbai)
🏢 Weaver
📍 Mumbai