Senior .NET Developer – Payments Projects

3 days ago

Sydney, New South Wales, Australia Synechron Full time $80,000 - $150,000 per year

About Synechron:

Synechron is a leading digital transformation consulting firm for the financial services industry. We combine innovative technology with deep domain expertise to drive growth and deliver excellence to our clients worldwide. Join us in shaping the future of
FinTech
,
Payments
, and
Digital Innovation
.

Role Overview:

We are looking for a
.NET Developer
with strong experience in
REST API development
,
AWS cloud services
, and
Payments or Digital Payment integrations
. This role will play a key part in building scalable, secure, and high-performance payment systems for global banking and financial clients.

Key Responsibilities:

  • Design, develop, and maintain
    RESTful APIs
    using
    .NET Core/.NET 6+
    .
  • Integrate with various
    digital payment gateways
    (e.g., Visa, Mastercard, UPI, PayPal, Stripe) and banking APIs.
  • Develop cloud-native solutions using
    AWS services
    such as Lambda, S3, API Gateway, DynamoDB, and ECS.
  • Collaborate with cross-functional teams to gather requirements and implement payment workflows.
  • Ensure security, compliance, and data protection in payment-related transactions.
  • Optimize backend systems for performance, scalability, and fault tolerance.
  • Write unit tests and participate in code reviews and continuous integration pipelines.
  • Monitor applications using tools like
    CloudWatch
    ,
    Splunk
    , or
    Datadog
    .

Required Skills & Experience:

  • 5+ years of hands-on experience in
    .NET Core / .NET Framework
    development.
  • Strong experience in
    REST API
    design and development.
  • Experience with
    AWS cloud
    – Lambda, S3, SNS/SQS, API Gateway, etc.
  • Solid understanding of
    Payments domain
    , including
    payment processors
    ,
    tokenization
    ,
    PCI compliance
    , and
    real-time transaction flows
    .
  • Exposure to
    ISO 8583
    ,
    ISO 20022
    , or similar payment messaging standards (preferred).
  • Good understanding of
    OAuth2.0 / JWT
    and securing APIs.
  • Familiarity with
    CI/CD tools
    like GitHub Actions, Jenkins, or Azure DevOps.
  • Experience in Agile/Scrum environments.

Nice to Have:

  • Experience with
    microservices architecture
    .
  • Exposure to
    banking and financial services
    clients.
  • Familiarity with
    DevSecOps
    practices.
  • Basic knowledge of
    SQL / NoSQL databases
    (e.g., SQL Server, DynamoDB).

Why Join Synechron?

  • Be part of global digital transformation projects in banking and finance.
  • Work with cutting-edge technologies and cloud platforms.
  • Opportunity to work with top-tier financial institutions.
  • Great workplace culture with a strong focus on learning and growth.

Apply Now

If you're passionate about technology and payments, and want to work on impactful projects with top financial clients, we'd love to hear from you.

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