Software Engineer Jobs in Missouri, United States

AI Compilers team at Microsoft builds cutting‑edge compiler technologies and optimization passes for AI workloads. The role designs and implements new compiler features, code generation for emerging hardware, and AI‑specific programming abstractions while collaborating with hardware architects and ML developers.

Apple Watch Setup Experiences team builds the first impression of watchOS by delivering seamless out‑of‑box and onboarding experiences. The Software Engineer designs and implements features for device pairing, Control Center, Settings, and related frameworks, collaborating with design, QA, and cross‑functional teams to ensure high quality on low‑power hardware.

The Apple Watch Safety & Communications team seeks a Software Engineer to help deliver a reliable, expertly-polished out-of-box experience for every Apple Watch user. You will take collaborative ownership of watchOS and iOS development focused on Safety features such as Crash Detection and Fall Detection, working closely with Design, QA, Marketing, and other Engineering teams.

Activity team at Apple builds comprehensive fitness and mindfulness experiences for watchOS and iOS. The Software Engineer develops features for the Fitness, Activity, and Mindfulness apps, working across UI, data analysis, syncing, and cross‑device integration with design, product marketing, and QA partners.

Enterprise Systems (SAP Technology team) at Apple owns the technology behind Apple's SAP environment and drives its modernization through the SAP Landscape Modernization initiative. The Java Software Administrator designs, develops, and supports scalable Java enterprise applications, builds CI/CD pipelines, and manages infrastructure with Terraform or Ansible.

Modern Health is a mental health benefits platform for employers, offering employees access to one-on-one, group, and self-serve digital resources for emotional, professional, social, financial, and physical well-being. The Growth Engineering team builds and maintains reliable, configurable systems that power scalable client launches and secure member access, owning eligibility processing, identity and access, the client configuration platform, and support of the reporting platform.

AlphaSense seeks a Principal Software Engineer to lead the architectural evolution of its Kubernetes-native platform toward a cell-based microservices model. The role involves designing and implementing scalable service structures, managing configuration frameworks, and mentoring senior engineers across Java, Python, React, and Rust.

The Dependency Risk & Automation Team in Apple Services Engineering (ASE) Security seeks a Senior Security Software Engineer to own software supply chain security across Apple's services. You will architect how software inventory and vulnerability data are modeled and correlated, set the engineering quality bar, and mentor engineers on supply chain risk reasoning.

The Applied Machine Learning team within Apple's AI & Data Platforms (AiDP) organization builds and operates mission-critical platforms for ML, GenAI, inference, and big data across the enterprise. As a Platform Reliability Engineer, you will design, operate, and optimize large-scale distributed systems that power GenAI, ML, and big data workloads in hybrid cloud environments.

G&A Solutions Engineering at Apple builds and maintains internal tools and platforms that streamline finance, legal, and operations workflows. The software engineer designs, develops, and ships scalable services, collaborates with cross‑functional teams to integrate new features, and ensures reliability and performance.

GridUnity, a leader in interconnection life cycle management, seeks a Staff Software Engineer to lead its AI-native quality engineering strategy. You will own the quality operating model, harden agent-driven test pipelines, and enforce release-gate discipline across all product lines.

Engineering team at Aera Technology builds a high‑performance Java based OLAP calculation engine for the Aera Decision Cloud platform. The Senior Software Engineer will design and implement low‑latency core engine components, collaborate with product to translate designs into executable criteria, and champion correctness and quality.

Data Engineering team at Omada Health builds scalable data platforms that enable AI/ML engineers, data scientists, and analysts to drive chronic disease care. The Senior Software Engineer designs, develops, and optimizes data architectures, pipelines, and governance frameworks, collaborating closely with cross‑functional stakeholders.

Hardware Tools and Solutions Internal Applications team at Apple builds internal tools and systems that enable hardware engineers to design world‑class devices. The Software Engineer develops full‑stack applications, data pipelines, and APIs that automate workflows and support simulation tools.

Software Engineer (Tools) on the Engagement Engineering team at Apple, building and maintaining internal tooling that streamlines developer workflows and improves product quality. The role designs, implements, and supports automation frameworks, CI/CD pipelines, and diagnostic utilities, collaborating closely with cross‑functional engineering groups.

Embedded Software Engineering team at Nidec Motor Corporation develops advanced motor control software for industrial drives. The role leads architecture, design, implementation, validation and release of embedded firmware, mentors engineers and collaborates with power electronics, mechanical and manufacturing teams.

The Build Support Engineering (BSE) team at Apple owns the build, deployment, and hotfix infrastructure that Apple's Commerce and platform engineering teams depend on to ship code daily. As a Software Engineer, you will modernize large-scale build and deployment systems, untangle legacy tooling, standardize containerized build-and-deploy paths, and build agentic AI systems that triage incidents and support developers autonomously.

Real-Time Software Engineer, News Engineering at LSEG is responsible for evolving the real‑time news collection and distribution platform. The role targets mid‑level engineers who thrive as individual contributors and want to deepen expertise in real‑time systems, C++ and cloud‑native development.

DRW is a diversified trading firm leveraging technology to trade across global markets. The Software Engineer – Cumberland/FICCO Tools Engineering role works closely with traders to build scalable, high‑performance tools for Cumberland and FICC options desks.

Elasticsearch - Storage Engine team at Elastic builds core storage and query technologies for observability workloads, focusing on storage efficiency, query processing, and data layout optimization. The Principal Software Engineer drives architectural vision, leads cross‑organizational initiatives, mentors engineers, and contributes modern Java code to the Elasticsearch engine.