Senior Backend Engineer (Payments Platform)

Position: Senior Backend Engineer (Payments Platform) 
Location: Austin, TX (On-site / Hybrid)
 Duration: 6 Months Contract to Hire
 About R Systems: 
R Systems is a leading digital product engineering company that designs and develops chip-to-cloud software products, platforms, and digital experiences that empower its clients to achieve higher revenues and operational efficiency. Our product mindset and engineering capabilities in Cloud, Data, AI, and CX enable us to serve key players in the high-tech industry, including ISVs, SaaS, and Internet companies, as well as product companies in telecom, media, finance, manufacturing, and health verticals. We Are Great Place to Work Certified in 10 countries with a full-time workforce [India, USA, Canada, Poland, Romania, Moldova, Indonesia, Singapore, Malaysia & Thailand]! We are recognized as one of the Best Tech Brands 2024 by the Times Group and India's Top 500 Value Creators 2023 by Dun & Bradstreet.

Job Requirement 
The Role: 
You are full stack but you live on the backend. You care deeply about what happens when a payment fails, an API returns an unexpected response, or a queue backs up at 2am. You will

own the backend services, payment workflows, and event-driven systems that sit at the core of our platform   and you will touch the frontend when the team needs it. This is a high-intensity role at an early-stage company. This role will ask more of you than a typical engineering job   systems need to stay up, deadlines are real, and the team is small.
   
What You Will Build:

• Production Node.js backend services and REST APIs   versioned, contract-stable, and hardened

• ACH payment workflows end-to-end   debits, credits, retries, failure handling, virtual account ledgering, and reconciliation

• Event-driven services using AWS SQS and webhooks for reliable asynchronous processing

• PostgreSQL schemas that support complex financial workflows with integrity under failure

• CI/CD contributions and test coverage that gives the team genuine confidence to ship

• Internal React dashboards and operational tooling when needed

• Design documentation, deployment runbooks, and scalability notes that you write because you are proud of the work   not because someone asked

• You will occasionally work directly with customers to support integrations, troubleshoot live workflows, and demonstrate platform capabilities   you are comfortable representing the product outside the codebase

 What We Are Looking For  
 Must Have:

• 6 7 years engineering experience with a strong backend focus

• Production Node.js and REST API design

• Solid PostgreSQL   schema design, query optimization, data integrity

• AWS   Lambda, RDS, SQS, API Gateway, Secrets Manager

• OpenAPI / Swagger documentation experience

• Event-driven systems experience   queues, webhooks, retry and failure logic

• CI/CD pipeline experience and automated deployment workflows

• You obsess over API design, documentation, deployment, scalability, and observability

• Cross-functional communicator   comfortable working directly with Product, QA, DevOps, and business stakeholders

• Agile practitioner   sprint planning, backlog grooming, and code reviews are second nature

• End-to-end owner   you do not hand off, you follow through to production

• Must be currently authorized to work in the United States without sponsorship

  
Strong Plus:

• ACH payment workflows and NACHA operating rules

• Wire, debit card, and real-time payment rail experience beyond ACH

• Experience with Java, Spring frameworks, or similar enterprise backend frameworks

• Regulated fintech compliance   audit logging, idempotency, SOC 2

• NestJS or similar structured Node.js frameworks

• AI-assisted development tools   Claude, GitHub Copilot, Cursor

• Team lead experience with mentoring junior team members

  
This is not a fit for you if:

• You consider documentation someone else's job

• You lose interest in a feature once it ships

• You need a detailed spec before you start building

• You are mainly optimizing for cash compensation over equity

  
Why This Role:   
We have a platform already in production, enterprise clients going live, and a small team where your work will be visible, consequential, and never lost in a backlog. If you want to build something that matters and own it fully   this is that role.
 
Why This Role : 
The market we operate in moves billions of dollars in consumer payments annually and is chronically underserved by modern technology. We have built a meaningfully better platform

that is already in production and gaining traction. This is a rare opportunity to join at the moment of first commercial traction   with a founding team that has done this before   and be a

defining technical voice in the next generation of US financial services infrastructure.
 
Why Join R Systems?

• Frequent Internal Hackathons: Engage in dynamic competitions with exciting prizes to keep your skills sharp.

• Cultural Celebrations: Strengthen our familial bonds through shared celebrations, fostering a sense of community.

• Diverse Project Exposure: Work on a variety of projects across sectors like Healthcare, Banking, e-commerce, and Retail, collaborating with leading global brands.

• Centre of Excellence (COE): Benefit from technical guidance and upskilling opportunities provided by our team of technology experts, helping you navigate your career path.

• E-Learning Platform: Gain access to comprehensive e-learning platforms coupled with a robust mentorship program to enhance your skills.

• Open Door Policy: Embrace a culture of mutual support, respect, and open dialogue, promoting a collaborative work environment.

If you are passionate and excited about working in a fast-paced, innovative environment, we would love to hear from you!
 R Systems is an equal opportunity employer that does not discriminate against any employee or job applicant because of race, color, religion, national origin, sex, physical or mental disability, age, or any other characteristic protected by law. We strive to build a team that reflects the diverse communities we serve, and we actively encourage applications from individuals of all backgrounds and experiences. Our commitment to equal opportunity extends to all aspects of employment, including recruitment, hiring, training, promotion, and benefits. 
#LI-RC1