.NET Architect

Altimetrik; Bengaluru; On-site; INR 2,800,000 - 4,200,000; Full time

Job summary

Altimetrik in Bengaluru seeks a senior backend engineer with 10+ years in backend development, writing code daily in a lead/architect role. You will own critical Windows-based services, implement C++/MFC/ATL patterns, and drive robust data solutions in SQL Server.

You'll tackle production debugging, optimize complex transactions, design for payment processing safety, and collaborate across teams using MSMQ/Kafka and CI/CD pipelines in a dynamic, fintech-like environment.

Qualifications

• :10+ years of backend development with senior or architect responsibilities.
• :
• Strong C++ on Windows including MFC/ATL, Windows services, multi-threading, memory management, COM/DCOM.
• Strong C# / .NET including WCF and Windows services.
• Deep Microsoft SQL Server expertise: complex stored procedures, functions, views and triggers; query optimization, indexing, partitioning; transactions, isolation levels, concurrency and deadlock analysis; performance tuning on large databases.
• Proven production debugging with root-caused incidents, crash dumps, and SQL diagnostics.
• Experience with message-based or asynchronous architectures (MSMQ, Kafka).
• Experience with financial or transactional systems where correctness, auditability and compliance matter.
• Comfort with Visual Studio, MSBuild, Git, and CI/CD (Azure DevOps/TFS, Jenkins).
• Solid acquiring knowledge of card payments ecosystems and transaction lifecycles.

Responsibilities

• : Lead backend design and daily coding in a senior/architect role.
• Proven production debugging and incident resolution.
• Contribute to the reliability and performance of high-volume financial systems.
• Collaborate across teams using modern tooling and CI/CD pipelines.
• Understand and design around payment processing lifecycles and merchant acquiring models.

Skills

C++ on Windows

C# / .NET

SQL Server

Multi-threading

Memory management

COM / DCOM

Production debugging

Messaging systems

Tools

MSMQ

Kafka

Job description

• 10+ years of backend development, including several years in a senior or architect-level role where you still wrote code daily.
• Strong C++ on Windows: MFC and/or ATL, Windows services, multi-threading, memory management, COM/DCOM.
• Strong C# / .NET, including .NET Framework-era technology (WCF, COM interop, Windows services).
• Deep Microsoft SQL Server expertise:
  • Complex stored procedures, functions, views and triggers
  • Query optimization, indexing and partitioning
  • Transactions, isolation levels, concurrency and deadlock analysis
  • Performance tuning on large, high-volume databases
• Proven production debugging. Youve root-caused real incidents in live systems, including with crash dumps and SQL diagnostics.
• Experience with message-based or asynchronous architectures (MSMQ, Kafka or similar).
• Experience with financial or transactional systems where correctness, consistency and auditability are critical.
• Comfort with Visual Studio, MSBuild, Git, and CI/CD (Azure DevOps/TFS, Jenkins or similar).
• Solid acquiring knowledge. You understand the acquirer side of card payments well enough to design for it:
  • The four-party model (merchant, acquirer, card scheme, issuer) and the acquirer's role and liabilities
  • The transaction lifecycle: authorization, capture, clearing, settlement and merchant funding, plus reversals, refunds and offline transactions
  • Interchange, scheme fees and merchant pricing models (blended vs. interchange++)
  • Chargebacks, disputes and reconciliation
  • Acquirer-side data required by the schemes (for example MCC, merchant name and country, acquirer BIN / ICA)

Need to know

• Payment protocols and scheme formats: ISO 8583, GICC, ZVT, EMV, girocard, Visa / Mastercard clearing formats (for example Base II, IPM), 3-D Secure.
• Hands-on experience with an acquiring or merchant-processing platform, payment facilitator (sub-merchant) models, or acquirer migrations.
• Payment security: HSM, PIN and MAC, DUKPT, ZKA, PCI DSS.
• SEPA, EBICS, camt or other banking and settlement file formats.
• SQL Server replication, SQL Agent or SQL CLR.
• Experience with 32-bit 64-bit migration of native code, or rehosting a Windows estate on AWS (EC2, FSx).
• Java 21 / Spring Boot and Kafka.
• Experience with regulated environments (BaFin, ZAIT, banking).
• German language skills, since parts of the code, database and documentation are in German. This is a strong plus.