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I’m Erik Deisler, a senior full-stack software engineer with 10+ years of experience building, modernizing, and supporting scalable applications for financial services, healthcare, and e-commerce. I enjoy turning complex business needs into reliable, maintainable systems—especially where secure payment workflows, high-performance APIs, and strong operational practices matter. Throughout my career I’ve led cloud-native architecture and delivery for microservices-based platforms using Java/Spring Boot, Node.js, and modern front-end frameworks (React/Angular). I’m comfortable improving latency and transaction performance, hardening idempotency and reconciliation for payments, and speeding up releases with CI/CD, Kubernetes, and AWS—while also mentoring engineers and collaborating across product, QA, security, and operations.…I’m Erik Deisler, a senior full-stack software engineer with 10+ years of experience building, modernizing, and supporting scalable applications for financial services, healthcare, and e-commerce. I enjoy turning complex business needs into reliable, maintainable systems—especially where secure payment workflows, high-performance APIs, and strong operational practices matter. Throughout my career I’ve led cloud-native architecture and delivery for microservices-based platforms using Java/Spring Boot, Node.js, and modern front-end frameworks (React/Angular). I’m comfortable improving latency and transaction performance, hardening idempotency and reconciliation for payments, and speeding up releases with CI/CD, Kubernetes, and AWS—while also mentoring engineers and collaborating across product, QA, security, and operations.

Erik Deisler

Full Stack Developer, Software Engineer, Back-End Developer, +2

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I’m Erik Deisler, a senior full-stack software engineer with 10+ years of experience building, modernizing, and supporting scalable applications for financial services, healthcare, and e-commerce. I enjoy turning complex business needs into reliable, maintainable systems—especially where secure payment workflows, high-performance APIs, and strong operational practices matter. Throughout my career I’ve led cloud-native architecture and delivery for microservices-based platforms using Java/Spring Boot, Node.js, and modern front-end frameworks (React/Angular). I’m comfortable improving latency and transaction performance, hardening idempotency and reconciliation for payments, and speeding up releases with CI/CD, Kubernetes, and AWS—while also mentoring engineers and collaborating across product, QA, security, and operations.…I’m Erik Deisler, a senior full-stack software engineer with 10+ years of experience building, modernizing, and supporting scalable applications for financial services, healthcare, and e-commerce. I enjoy turning complex business needs into reliable, maintainable systems—especially where secure payment workflows, high-performance APIs, and strong operational practices matter. Throughout my career I’ve led cloud-native architecture and delivery for microservices-based platforms using Java/Spring Boot, Node.js, and modern front-end frameworks (React/Angular). I’m comfortable improving latency and transaction performance, hardening idempotency and reconciliation for payments, and speeding up releases with CI/CD, Kubernetes, and AWS—while also mentoring engineers and collaborating across product, QA, security, and operations.

Available to hire

I’m Erik Deisler, a senior full-stack software engineer with 10+ years of experience building, modernizing, and supporting scalable applications for financial services, healthcare, and e-commerce. I enjoy turning complex business needs into reliable, maintainable systems—especially where secure payment workflows, high-performance APIs, and strong operational practices matter.

Throughout my career I’ve led cloud-native architecture and delivery for microservices-based platforms using Java/Spring Boot, Node.js, and modern front-end frameworks (React/Angular). I’m comfortable improving latency and transaction performance, hardening idempotency and reconciliation for payments, and speeding up releases with CI/CD, Kubernetes, and AWS—while also mentoring engineers and collaborating across product, QA, security, and operations.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Beginner

Beginner

Language

English

Advanced

Javanese

Fluent

Work Experience

Senior Full-Stack Engineer at Synchrony

March 1, 2022 - Present

Architected cloud-native account servicing and payment capabilities using Java, Spring Boot, Node.js, React/Angular, GraphQL, REST APIs, AWS EKS, and Kubernetes, reducing p95 API latency by 32% and improving transaction completion time by 27%. Modernized tightly coupled functions into independently deployable microservices to increase release frequency and reduce change-failure rate. Engineered secure, idempotent payment APIs with standardized validation, retry handling, and reconciliation controls, lowering duplicate/amminuous transaction incidents and reducing support contacts. Improved digital credit application journeys using reusable UI components, server-side session recovery, and A/B testing instrumentation, increasing completion rates and reducing abandonment at targeted steps. Implemented structured logging, correlation IDs, CloudWatch dashboards, and customer-impact alerting to reduce mean time to detect and restore. Automated build, testing, security validation, and deployme

Software Engineer II / Ascension

March 1, 2019 - February 1, 2022

Delivered a digital patient access and pre-visit intake platform using Java, Spring, Hibernate, React, Redux, PostgreSQL, and REST APIs, reducing check-in preparation time by 31% and increasing pre-visit form completion by 23%. Built configuration-driven forms with mobile-responsive components, saved progress, and reusable validation rules, reducing incomplete/invalid submissions by 27% and shortening new-form delivery from about three weeks to five business days. Integrated patient-facing workflows with scheduling and registration systems through normalized API models and adapter services, reducing duplicate data entry by 19% and manual information rekeying by 22%. Protected health information using role-based access, encryption, audit logging, and sensitive-data filtering, reducing recurring security/privacy defects found before production by 35%. Streamlined patient billing and payment experiences using Java, Node.js, React, tokenized payment fields, and REST integrations, increasin

Software Engineer II at N/A (Ascention)

March 1, 2019 - February 1, 2022

Delivered a digital patient access and pre-visit intake platform using Java, Spring, Hibernate, React, Redux, PostgreSQL, and REST APIs, reducing check-in preparation time and increasing pre-visit form completion. Built configuration-driven forms with mobile-responsive components, progress saving, and reusable validation rules, reducing incomplete/invalid submissions and accelerating form delivery from weeks to days. Integrated patient-facing workflows with scheduling and registration systems through normalized API models and adapter services, reducing duplicate data entry and manual information rekeying. Implemented role-based access, encryption, audit logging, and sensitive-data filtering to reduce security and privacy defects before production. Streamlined patient billing and payment experience using Java, Node.js, React, tokenized payment fields, and REST integrations, improving online payment completion and payment page load time. Resolved duplicate and uncertain payment states wi

Full Stack Developer at Amazon

September 1, 2015 - February 1, 2019

Developed an onboarding and verification platform using Java, Angular, NgRx, PostgreSQL, Amazon S3, and REST APIs, reducing onboarding cycle time and incomplete submissions. Designed configuration-driven onboarding stages with step-level validation and secure save-and-resume, improving first-pass validation success and lowering manual follow-up work. Implemented controlled S3 document uploads, file validation, metadata tracking, and role-based operations dashboards, decreasing document handling errors and onboarding status inquiry time. Accelerated catalog quality operations through React, Node.js, Java, PostgreSQL, and DynamoDB management console, reducing issue resolution time and increasing analyst throughput. Refactored large-result search and filtering flows using server-side pagination and indexed queries while optimizing API payloads, improving response times for high-volume datasets. Enhanced workflow integrity with optimistic locking, record-version checks, assignment controls