Senior Full Stack Engineer, Financial Services API & Platform
Overview
React and backend work across services powering Trajan Wealth's digital platforms at scale. You will design and operate full stack features from front-end to API gateway and data integrations. Collaborate with product, security, compliance, and SRE to meet regulatory standards while delivering fast, reliable experiences. This onsite role at our Scottsdale HQ blends product velocity with platform reliability and strong engineering quality.
What You'll Do10
- 1Build end-to-end features across React/TypeScript frontend and Node.js / Java / Python backends with robust data persistence and event-driven integrations
- 2Own the API lifecycle including RESTful and event-driven APIs, versioning, deprecation and OpenAPI/Swagger docs
- 3Configure and tune the API gateway platform (MuleSoft or equivalent) to ensure secure, scalable access
- 4Implement authentication and authorization patterns (OAuth 2.0, OIDC, mTLS, JWT) for financial services and consent management
- 5Partner with security and compliance to meet SOC 2, PCI DSS, GLBA, GDPR / CCPA, SOX requirements and external audits
- 6Build observability into systems with structured logs, tracing, metrics, and SLOs, and maintain high availability during on-call rotations
- 7Translate business and regulatory requirements into clear technical designs and trade-offs with stakeholders
- 8Drive incident response and postmortems to durable system improvements
- 9Collaborate with product teams to deliver features that balance risk, scope, and timelines
- 10Mentor mid-level engineers and uphold engineering standards through code reviews and pair programming
Requirements10
- 15+ years building frontend and backend systems in professional software engineering roles
- 2Strong experience with a modern frontend framework (React preferred; Vue or Angular acceptable) and TypeScript
- 3Proficiency in backend languages common in financial services (Java, Python, Go, Node.js, or C#)
- 4Hands-on experience designing and operating APIs in production at scale (REST and GraphQL or gRPC or event-driven)
- 5Direct experience with API management platforms (MuleSoft, AWS API Gateway, Azure API Management or similar)
- 6Knowledge of identity and access standards (OAuth 2.0, OIDC, JWT, mTLS, API keys)
- 7Cloud experience (AWS, Azure, or GCP) with containers (Docker) and orchestration (Kubernetes or ECS)
- 8Experience with relational and non-relational databases and data consistency in financial workflows
- 9Ability to work in regulated environments with audits, change management, and incident handling
- 10Excellent written and verbal communication for technical and non-technical stakeholders
Salary Insight
$108 - $140k per year
Location
Required Skills
Similar open positions
Explore active roles that match your skills and interests.
Affinity Plus Federal Credit Union
VerifiedSenior Full Stack Developer, Web Applications
Own the design, development, and delivery of scalable web applications for Affinity Plus Federal Credit Union, building solutions that serve members and internal teams. You'll lead architecture decisions, drive API strategy, and shape the SDLC across a virtual-first team in Minnesota or Wisconsin. Partner with cross-functional teams and IT leadership to advance automation, security, and platform adoption. This role stands out for its focus on platform governance, mentorship, and roadmap planning, with a clear path from concept to production.

TechniPros, LLC
VerifiedSenior .NET Full Stack Developer, Banking & Financial Services
You will own design and delivery of enterprise-grade full stack solutions for a Banking/Financial Services client, building on .NET 8/9 and Java Spring Boot. You will join a 10+ person team across Philadelphia, Wilmington, DC and other hubs. You will drive cloud-native architecture with Azure or AWS, and modernize legacy systems. This contract role stands out for its depth in secure financial applications.
Siteline
VerifiedSenior Software Engineer Backend Infrastructure
Lead backend and infrastructure development to drive ownership and scale. Build systems that transform construction finance efficiency. Impact millions of workers in a slow industry. Shape payment processes for contractors. Drive growth and improve financial operations.

Hiring Dreams LLC
VerifiedSenior Software Engineer, Investment Management & APIs
10+ years of commercial software engineering experience, focusing on API development and investment management systems. You will own the design and delivery of scalable data pipelines using SQL and Databricks, working alongside investment teams to build robust financial applications. This hybrid role requires presence in the New York or London office three days per week. You'll drive technical strategy and mentor junior engineers in a firm that values engineering excellence.
Bertrandt
VerifiedSenior Full Stack Developer, React & Node.js
You will lead the design, development, and integration of enterprise-grade web applications and APIs at Bertrandt US, a global engineering firm with 14,500+ colleagues. You will architect scalable frontend and backend solutions using React, Angular, Node.js, and Express.js, modernizing platforms and implementing cloud-native, secure, and maintainable systems. Collaborate with architecture, DevOps, data, and business teams to deliver digital solutions that drive the future of ADAS, Autonomous Driving, and Electric Mobility. This role offers hybrid-remote work, a comprehensive benefits package, and the chance to influence technology strategy across a global network.
Orum
VerifiedStaff Software Engineer, Authentication & API
Lead end-to-end delivery for authentication and API systems at scale within a real-time platform. Own complex backend services, APIs and React frontends, guiding architecture and standards across cross-functional teams. Mentor engineers and raise the bar for reliability, performance, and simplicity. Join a product platform team shaping identity, CRM integrations and AI-powered data enrichment.