Top Software Engineer Jobs in St. Louis, MO

As a software engineer, you will enhance customer experiences and build tools for restaurant partners, focusing on payments and analytics.

Design, develop, test, and maintain non-embedded Tomahawk software across the lifecycle. Perform MBSE, manage requirements and CRs, develop architectures, unit test and integrate components, create verification plans, and mentor junior engineers while ensuring DoD and export-control compliance.

Senior Java Software Engineer responsible for full SDLC on the Vehicle Management Team: developing prototypes, coding Java/J2EE applications, analyzing requirements, configuring J2EE servers, performing unit/integration testing, and collaborating with IT teams on web, mobile, and cloud solutions using Spring, Hibernate, Struts, Oracle, and Web Services.

Design, implement, and operate hybrid on-prem/AWS cloud and edge platforms. Maintain OpenShift/Kubernetes environments, integrate AI, perform trade studies, ensure security/compliance, document architectures, and mentor engineering teams.

As a Software Engineer for the ARC team, you'll design and implement secure backend systems, manage model inference layers, improve engineering standards, and collaborate with teams to meet government agency needs.

Design, implement, and optimize high-performance backend systems in Rust for an xOT security platform. Participate across the development lifecycle—debugging, testing, and performance tuning—while integrating relational and NoSQL data stores, microservices, third-party devices, and AI tools. Provide technical leadership, code review feedback, and promote secure, reliable, observable distributed systems.

Design and develop backend services and APIs for identity resolution, optimize event-driven systems, and enhance system reliability. Mentor engineers and influence architectural decisions.

As a Lead Software Engineer, you'll design and develop GenAI platforms, integrate LLMs, mentor engineers, and solve technical challenges for scalable solutions.

Own end-to-end frontend development for core crypto payment flows across web and mobile. Improve latency, availability, and SLOs; build user-facing features (contacts, real-time transaction status); identify and fix performance bottlenecks; partner with product/design/backend; mentor junior engineers to reduce customer friction at scale.

Lead design and implementation of the PSA Liquidity Platform connecting buyers and sellers. Build buyer tooling, matching/ranking engines, and seller experiences. Architect and operate microservices and Kafka-driven systems on Kubernetes/AWS, instrument observability, apply AI tooling across the SDLC, and drive cross-functional delivery from 0-to-1 while owning end-to-end outcomes.

Lead backend and full-stack work on the Payments team, building multi-gateway integrations (Stripe, PayPal), payment APIs, and customer payment UIs. Ensure secure, compliant (PCI-DSS) payment flows, reliability, observability, and scalability across AWS/Kubernetes microservices. Partner cross-functionally to design architecture, implement settlement/reconciliation, and maintain high availability.

Build software at Coinbase while responsibly using and integrating generative AI copilots (e.g., LibreChat, Gemini, Glean). Continuously learn evolving tools, apply human-in-the-loop practices, and deliver business-ready outputs that improve efficiency, cost, and quality. Participate in quarterly in-person working sessions as part of a remote-first culture.

Serve as the technical IC leader for the Provider organization: set technical roadmap and engineering standards, design and review architectures, drive cross-team initiatives, mentor engineers, and deliver high-throughput, low-latency, cloud-based microservice systems for provider-focused products.

Build and scale full-stack systems to improve provider onboarding and supply; design distributed, maintainable services; lead high-priority projects; mentor engineers; integrate AI-assisted and LLM-based features; drive provider-facing product quality and reliability.

Lead design and delivery of complex web and mobile product areas, build and maintain React/React Native applications, architect scalable systems and APIs, optimize databases and performance, drive engineering standards and test coverage, mentor engineers, and collaborate with leadership and stakeholders in a fully remote environment.

Microsoft Software Engineer role (IC3/IC4) with published U.S. base pay ranges. Job posting lists compensation bands and EEO/accommodation information; specific technical responsibilities and qualifications are not provided.

Lead and mentor engineering teams to design, build, deploy, and operate Java/Spring microservices and cloud-native clinical interoperability products. Collaborate with product, EHR partners, and cross-functional teams, ensure code quality, CI/CD, security, observability, and Agile delivery for large-scale healthcare systems.

Architect and build backend systems for a real-time Command and Control platform directing large swarms of heterogeneous aircraft. Develop distributed infrastructure for mission control despite intermittent communications, ingest and process high-throughput telemetry and sensor data, and manage scheduling and data links. Own backend features from design through deployment while supporting reliability, scalability, CI/CD, QA, and DevSecOps practices.

Lead frontend architecture for Legion’s real-time Command & Control platform, enabling operators to plan and direct large swarms of heterogeneous aircraft. Build collaborative, resilient interfaces for telemetry, sensor data, scheduling, crew resources, and data-link management during intermittent communications. Establish frontend standards, mentor engineers, and deliver performance-sensitive applications with strong CI/CD, QA, and DevSecOps practices.

As a Senior Full Stack Software Engineer, you will build and improve products, create user interfaces and APIs, and collaborate with various teams to enhance the customer experience.

As a mid-level Software Engineer, you'll deliver Python-based platform features, collaborate with teams, and maintain system reliability and scalability.

Seeking a Senior DevOps Engineer for OpenSesame, focusing on CI/CD pipelines, cloud infrastructure, and automation. Responsibilities include improving developer experience and mentoring teams.

Design, build, and operate high-scale distributed observability systems for telemetry ingestion, processing, storage, autoscaling, and service provisioning. Own platform reliability, performance, capacity, and cost efficiency; participate in on-call rotations and resolve incidents through root-cause fixes. Develop automation, identify architectural bottlenecks, contribute to technical roadmaps and design reviews, and collaborate with infrastructure, product, and engineering teams.

Develop and maintain a telemedicine platform using React, TypeScript, Python/Flask, and PostgreSQL. Responsibilities include designing, implementing, testing, deploying, debugging, and supporting software across the full lifecycle; building accessible web interfaces; integrating APIs and third-party services; reviewing code and designs; documenting technical decisions; improving scalability and maintainability; collaborating cross-functionally; and mentoring engineers.

Build and deploy full-stack product features across user interfaces, APIs, and cloud environments. Design, develop, test, debug, maintain, and support scalable software tailored to aviation and defense operational technology needs. Contribute to architecture, security, compliance, and quality standards while mentoring peers and participating in Agile development. Required experience includes JavaScript or TypeScript, a modern frontend framework, Go, REST APIs, AWS, Docker, CI/CD, and SaaS product development.