Senior Dot Net Developer

4 weeks ago

Greater Noida, India RannLab Technologies Pvt. Ltd. Full time

We are seeking a highly experienced and technically proficient Senior ASP.NET Developer with 5-8 years of experience to lead the backend development of secure, high-performance SaaS applications focused on Digital Signature, eSign, and eKYC workflows. This role is ideal for a backend engineer with deep knowledge of .NET 8, C#, PostgreSQL, and secure API development, as well as hands-on experience with encryption, certificate-based signing, and compliance integrations.

Key Responsibilities

  • Architect and develop secure, scalable SaaS backend systems using .NET 8 and C#
  • Design and implement robust Web APIs for digital signing, encryption, and identity verification workflows
  • Build reusable backend components for digital signature, encryption, and data integrity verification
  • Integrate with third-party systems using PFX certificates, UIDAI, NSDL, or CA APIs
  • Collaborate with frontend developers for seamless API integration and UX alignment
  • Design and manage relational data models and optimize PostgreSQL queries and schema
  • Troubleshoot complex issues across systems and deliver optimized performance
  • Ensure secure API development practices, including use of OAuth2 and JWT
  • Participate in code reviews, system design discussions, and mentor junior developers

Technical Skills Required

  • Expert-level experience with .NET 8, .NET Core, and Web API development
  • Strong knowledge of SaaS architecture and multitenant backend systems
  • Proven experience in Digital Signature, eSign, eKYC workflows
  • Experience with PFX certificates, signing, encryption, and hashing mechanisms
  • Strong command of RESTful API standards and secure API development
  • Advanced PostgreSQL skills: complex queries, schema design, performance tuning
  • Experience with authentication standards: OAuth2, JWT
  • Proficient with Git and Git-based workflows

Preferred / Bonus Skills

  • Familiarity with UIDAI, NSDL, or Certificate Authority (CA) APIs
  • Experience in high-security, compliance-driven projects (e.g., FinTech, GovTech)
  • Familiarity with cloud infrastructure (Azure, AWS) and CI/CD pipelines

Screening Parameters

  • Demonstrable experience with .NET 8 and digital signature workflows
  • Production-level use of PostgreSQL with performance optimization
  • Previous experience or strong understanding of eSign, eKYC, or similar integrations
  • Ability to share architecture diagrams, code samples, or live project references

Why Join Us?

  • Work on a cutting-edge digital security product
  • Be part of a high-impact, fast-paced team
  • Opportunity to own backend architecture decisions
  • Collaborate on enterprise-grade system design from the ground up

Job Type: Full-time

Pay: ₹90, ₹150,000.00 per month

Benefits:

  • Flexible schedule

Ability to commute/relocate:

  • Greater Noida, Uttar Pradesh: Reliably commute or planning to relocate before starting work (Required)

Education:

  • Bachelor's (Preferred)

Experience:

  • .NET: 1 year (Preferred)
  • total work: 1 year (Preferred)

Work Location: In person

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