Demo

Senior Software Engineer

SSi People
San Jose, CA Contractor
POSTED ON 4/2/2026
AVAILABLE BEFORE 6/30/2026

Job Title: Senior Software Engineer

Location: San Jose, California - Hybrid

W2 ONLY - We are not able to sponsor for this role now or in the future


Make your impact within a rapidly growing Fintech Company

Job Summary: Being a Champion for SMBs is good for business. And a career defining opportunity for you. This client is a leader in financial automation software for small and midsize businesses (SMBs). As a champion of SMBs, we are dedicated to automating the future of finance so businesses can thrive. Hundreds of thousands of businesses trust their solutions to manage financial workflows, including payables, receivables, and spend and expense management. With this company, businesses are connected to a network of millions of members, so they can pay or get paid faster. Through their automated solutions, they help SMBs simplify and control their finances, so they can confidently manage their businesses, and succeed on their terms.


Responsibilities:

  • Design, build and support highly reliable, low latency payment systems and APIs
  • Implement secure, compliant and fraud-resistant payment solutions
  • Develop robust integrations with third party payment providers leveraging messaging and events
  • Build ingestion pipelines, data lakes and AI/ML models for payment analytics
  • Instrument payment systems for monitoring, logging, tracing and alerting
  • Diagnose and troubleshoot issues quickly in live production environments
  • Automate deployment, testing and infrastructure management using IaC tools
  • Work closely with product and business teams to drive payment innovation
  • Develop solutions leveraging leading technologies like cloud, containers, Kafka, AI/ML
  • Take full ownership of critical payment systems and mentor junior engineers
  • Promote scalability, reliability, security and engineering best practices
  • Provide technical guidance during design, code reviews and testing
  • Clearly communicate technical details and tradeoffs to stakeholders
  • Make critical recommendations influencing payment systems direction
  • Participate in team meetings and facilitate technical discussions


Required Skills:

  • 5 years experience designing, developing, and operating distributed systems and microservices leveraging Java, Spring Boot
  • Java and AWS is required for this role
  • Bachelor's degree in CS or related field; Master's preferred
  • Expertise in Java, SQL/NoSQL, REST, messaging, CI/CD pipelines, automated testing
  • Experience with payment systems, PCI compliance, security, encryption highly preferred
  • Design, build, and support reliable applications on AWS cloud (EC2, RDS, Lambda, API Gateway)
  • Implement scalable architectures using containers, Kubernetes.
  • Monitor, log and alert on application performance using CloudWatch,Datadog
  • Diagnose and troubleshoot issues efficiently in development and production environments
  • Hands-on experience developing and monitoring AI/ML models
  • Identify opportunities to apply AI/ML capabilities to solve problems
  • Advocate for engineering best practices around development, testing, deployment
  • Provide technical guidance and mentoring to less experienced engineers
  • Work cross-functionally with product, design, and leadership teams


About SSI People: With over 26 years of industry experience, SSi People has built its reputation and expertise on putting people first. Everything we do works toward delivering exceptional experience for our consultants, our clients, and our internal team. Through a genuine commitment to people in everything we do. We have developed refined processes and a stellar internal team to deliver talent quickly. More importantly, we focus on building long-term relationships, not transactions. Putting people first is just what we do well.

By applying for this job, you agree to receive calls, AI-generated calls, text messages, or emails from SSi People and its affiliates, and contracted partners. Frequency varies for text messages. Message and data rates may apply. Carriers are not liable for delayed or undelivered messages. You can reply STOP to cancel and HELP for help. You can access our privacy policy here: SSi People Privacy Policy

Hourly Wage Estimation for Senior Software Engineer in San Jose, CA
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