Top Software Engineer Jobs in St. Louis, MO

Leads engineering strategy, architecture, delivery, and organizational development for Agiloft’s Contract Intelligence portfolio. Oversees Astra Agents, Contract Intelligence Graph, shared cloud-native platforms, APIs, IAM, AI assistants, and integrations. Partners with Product, Design, Applied AI, and Operations to deliver secure, scalable, reliable customer-facing systems. Manages distributed engineering teams, develops leaders, establishes operational metrics, guides responsible AI practices, and remains hands-on in architecture, code reviews, and technical decisions.

Lead front-end development and REST API integration for a federal environmental platform. Build accessible React or Angular interfaces, geographic query tools, consultation package features, and species-data integrations. Ensure Section 508 and WCAG 2.0 compliance, produce VPAT accessibility reports, support demonstrations, and implement production feedback. The role is fully remote and requires U.S. citizenship with eligibility for Public Trust clearance.

Develop and maintain platform UI features while leading accessible web-based training content, e-learning modules, videos, job aids, help resources, and adoption metrics dashboards. Support Section 508/WCAG compliance, user testing and training plans, post-deployment monitoring, and resolution of interface issues for a federal data integration platform.

Administer and support Software AG ADABAS/Natural mainframe database environments, including upgrades, configuration, maintenance, monitoring, backups, restores, reorganizations, disaster recovery, performance tuning, and troubleshooting. The role manages database definitions, security, utilities, vendor relationships, documentation, client onboarding, and change control. It also provides scheduled 24x7 on-call support across large, multi-database customer environments.

Lead two or more software engineering teams building and operating TopstepX, a real-time trading platform. Responsibilities include coaching and developing engineers, hiring and capacity planning, prioritizing delivery amid changing needs, and ensuring system availability, performance, quality, and resilience. The role requires leadership of production systems, incident response, observability, reliability investments, and collaboration with Product and business stakeholders.

Leads the design, development, deployment, and support of scalable, fault-tolerant software applications. Responsibilities include architecture, coding, debugging, performance optimization, cloud-native and microservices development, Kubernetes operations, production monitoring, incident response, code reviews, technical planning, mentoring, and cross-functional collaboration. The role also contributes to product roadmaps, engineering standards, automation, and on-call support.

Build and own partner-facing APIs and backend services in a Python web application. Improve database queries and system performance, develop partner dashboards, and deliver integrations from design through deployment. Collaborate with product and commercial teams to support new partner categories, using metrics and AI coding assistants to accelerate delivery. The role requires independent senior-level impact in an ambiguous, fast-paced environment.

Design and build scalable backend services and APIs for a real estate software platform. Develop clean, maintainable Java code on AWS, collaborate with frontend, design, and product teams, and solve performance and scaling challenges. The role requires strong problem-solving skills, debugging ability, data structures and algorithms knowledge, startup experience, and comfort using AI-assisted coding tools.

Build and maintain scalable billing and monetization systems for subscription, pricing, and payment workflows. Develop large-scale applications using Java, AWS, Lambda, event-driven architecture, REST APIs, and GraphQL. Work with multiple databases, implement automated testing, protect data integrity, and collaborate with internal teams to deliver customer-facing pricing and upgrade experiences.

Designs, develops, tests, documents, and supports secure external data integrations using .NET, Azure, Informatica, Snowflake, APIs, ETL, and file-based interfaces. Leads technical delivery, performs impact analysis, supports production systems, troubleshoots defects, collaborates with business and technology stakeholders, and mentors engineers. The role owns integration architecture and solutions for insurance and financial-services partners, including DTCC and iPipeline feeds.

Lead software architecture across Keeper’s security platforms, including PAM, browser extensions, clients, APIs, and distributed systems. Define scalable technical standards, evaluate architectural trade-offs, guide major design decisions, and ensure security, reliability, performance, and maintainability. Build prototypes, review code, partner with Engineering, Product, and Security leadership, address technical debt, mentor senior engineers, and influence architecture across multiple teams. The role requires strong full-stack, cloud-native, SaaS, identity, authentication, authorization, and secure application architecture expertise.

Develop and enhance Ferguson’s custom Trilogie ERP system across multiple functional areas. Responsibilities include designing business-process solutions, owning software projects through implementation, integrating APIs and web services, collaborating with analysts, product owners, QA teams, administrators, and vendors, writing unit tests, reviewing code, and optimizing performance in high-transaction environments. The role also supports Trilogie’s migration from Unix to Linux and requires extensive UniBasic or Pick-based development experience.