Note: The job is a remote job and is open to candidates in USA. Bolder Apps is a product development studio that partners with US-based startups and established companies to build and scale innovative digital products. They are seeking a Senior Backend & Infrastructure Engineer to own the architecture that secures sensitive financial data and ensures system reliability for enterprise clients.
Responsibilities
- Define and own the high-level infrastructure strategy on AWS — uptime, scalability, and performance are your metrics
- Architect secure, resilient backend workflows capable of supporting enterprise-level client deployments on a platform handling sensitive financial data
- Implement and enforce security frameworks across all system layers — encryption, network isolation, access controls, compliance boundaries
- Design and lock down secure data flows between MCP servers and third-party ERP integrations
- Own the Postgres infrastructure — schema design, query optimization, scaling strategy, and backup integrity
- Integrate directly into the client engineering team with full support from Bolder's design, DevOps, and QA network
Skills
- Senior backend track record. You've architected distributed, enterprise-grade backend systems in production — not prototypes, not internal tools. You can point to something that ran at scale, stayed up, and handled real data without incident
- Deep AWS expertise. You provision, scale, and secure infrastructure in AWS hands-on. VPCs, IAM, ECS or EKS, RDS, Secrets Manager, CloudWatch — you've used them in anger, not just in tutorials. You know what the AWS Well-Architected Framework says and where to deviate from it
- PostgreSQL at scale. Expert-level fluency with Postgres — schema design, indexing strategy, query optimization, migrations, connection pooling, replication. You don't write queries you haven't profiled
- Security specialist. Secure communication protocols, data encryption at rest and in transit, network isolation, multi-server environment management. In a FinTech context, you treat security as architecture, not an afterthought bolted on before launch
- MCP and integration security. You understand how Model Context Protocol servers communicate and where the attack surface lives. You've thought about securing LLM-to-system boundaries, not just API-to-API ones
- AI and data integration fluency. Exposure to LLM orchestration pipelines, automated code generation systems, or ERP data sync tooling. You don't need to have built a custom LLM harness, but you need to understand what's happening inside one well enough to secure it
- Proactive communicator. You flag infrastructure risks before they become incidents. You document decisions. You don't go quiet between check-ins and resurface with surprises
Benefits
- Fully remote
- Target start date of early August 2026 — defined scope, no ambiguity on timing
- Direct access to engineering leadership with no PM layers between you and the decisions
- Tooling budget for infrastructure, security tooling, and monitoring
- A peer network of senior engineers and agentic builders across Bolder's client portfolio
Company Overview