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Senior Software Engineer

Haystack
FULL_TIME Remote · US Greater St. Louis, US USD 115000–184000 / month Posted: 2026-05-11 Until: 2026-07-10
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Job Description
We're hiring on behalf of a Haystack partner! The Role Act as a hands-on Rule Author with deep experience in Fraud Rules Engines. Drive implementation best practices with a strong capability in writing and improving rule quality. Follow solution architectural designs, ensuring alignment with business needs and technical capabilities. Utilize programming languages such as Java, Python, or Go for platform development and enhancements. Serve as a force multiplier for automation and platform enhancements within the AI & DPE organization. Modernize platforms related to Fraud Rules/Engines and manage large-scale migrations. What You'll Need Proven hands-on software development experience with familiarity in DevOps best practices. Experience with Fraud Rule Engines and successful large-scale migration projects. Working knowledge across multiple programming languages and frameworks, with an interest in declarative and functional programming. Strong communication, collaboration, and organizational skills, with the ability to build relationships. Demonstrated track record with AI technologies, including Gen AI and LLMs, relevant to fraud rules. Experience with relational and NoSQL databases, and understanding of loosely coupled, stateless systems. What's On Offer A competitive annual salary of $115,000 - $184,000 USD. Opportunity to work on scalable global platforms with high throughput and low latency. Comprehensive benefits package including insurance, retirement plans, and paid time off. Exposure to cutting-edge AI technologies and a commitment to continuous learning and development. Apply via Haystack today!