Top Software Engineer Jobs in St. Louis, MO

Build end-to-end full-stack product features, integrate smart contract/blockchain calls, design resilient backend systems and indexers, optimize performance, lead QA and mentor junior engineers.

The Technical Solutions Engineer collaborates with the Sales team, leveraging construction scheduling expertise to assist customers in integrating Planera's solutions into their workflow, conducting demos, and leading technical discussions throughout the sales process.

The Backend Engineer will develop infrastructure for product integration, create documentation for team training, and influence technology decisions.

Lead backend Java development and architecture for enterprise applications. Design and deliver scalable, resilient microservices and APIs, mentor developers, lead technical decisions, support production incidents, and implement CI/CD and cloud-native solutions on AWS.

Build custom n8n flows, API integrations, webhooks, and middleware to implement complex, code-level onboarding and orchestration for enterprise SaaS clients. Scope projects with sales, own end-to-end technical onboarding, QA, monitoring, and feed recurring needs back to Product. Act as a client-facing technical consultant, including onsite visits, and create reusable integration patterns.

Own and advance a core Helius backend system supporting Solana infrastructure. Design and release high-performance products, optimize latency and throughput, make architectural decisions, improve observability and incident response, and mentor engineers. The role requires end-to-end ownership of production systems at scale, with close collaboration with founders and engineering leadership. Relevant systems include data streaming, historical APIs, account indexing, and access control infrastructure.

Develop full-stack solutions using TypeScript and AWS cloud technologies. Responsibilities include building GraphQL APIs, business logic libraries, AWS Lambda functions with CDK, AWS Glue automation, and Angular/Ionic user interfaces. The engineer will also support CI/CD, Git repositories, linting, developer workflows, requirements management, and HIPAA-compliant software development. Collaboration with engineers, management, and business analysts is required.

Leads a team of 5–8 engineers, balancing people management with technical leadership. Responsibilities include career development, roadmap delivery, architectural guidance, code reviews, hiring, incident response, team culture, and delivery management. Partners with Product Management and Design to build scalable, reliable, user-focused SaaS products while contributing hands-on technically and supporting remote, asynchronous collaboration.

Develop and maintain enterprise applications supporting creator rights and royalty payments. Own features across Vue.js front ends and Java/Spring Boot back ends, participate in architecture and Agile development, write and review code, design and test data-driven solutions, improve engineering standards, collaborate with stakeholders, mentor junior engineers, and work with large-scale data, AWS services, distributed systems, and microservices.

Designs, develops, tests, and maintains scalable software features and services across backend and frontend systems. Collaborates on architecture with engineering, product, QA, and DevOps teams; contributes to CI/CD, monitoring, testing, and operational reliability. Requires C#/.NET and API expertise, cloud platform familiarity, Docker, AI development experience, and strong communication and problem-solving skills.