Top Software Engineer Jobs in San Antonio, TX

Lead a squad of engineers in building full-stack applications and agentic AI systems. Handle technical direction, feature delivery, and architecture, focusing on AI integration and real-time data pipelines.

As a Senior Software Engineer, you'll design and maintain frontend applications and reusable components, integrate APIs, mentor engineers, and ensure high-quality user experiences in the fintech space.

The Principal Software Engineer will lead architectural direction, integrate AI capabilities, mentor engineers, and tackle complex technical challenges for scalable systems.

The Sr Software Development Engineer will design and maintain scalable cloud-based solutions, lead project technical direction, and ensure high-quality deliverables in a fast-paced Agile environment.

The Principal Software Engineer will architect and oversee the development of distributed systems, mentor engineers, and drive architectural initiatives for large platforms.

As a Senior Software Engineer at Flex, you'll design and maintain financial services architecture, mentor junior engineers, and ensure scalability and security for innovative financial products.

The Lead Software Engineer for Mobile iOS will design, test, and deliver applications, oversee software maintenance, collaborate on mobile experiences, and mentor junior engineers, utilizing Swift and modern Apple frameworks to enhance user experiences.

Build and improve the end-to-end experience for new customers by implementing features across Python services, a GraphQL gateway, Auth0-based auth, and Terraform-managed GCP infrastructure. Collaborate cross-functionally to redesign discovery, evaluation, onboarding, and time-to-value while ensuring reliability, testing, and stable deployments.

Develop and maintain a digital ordering platform for medical equipment. Lead technical decisions, deliver quality code, and ensure system reliability while collaborating in an agile environment.

Lead design and ownership of scalable data domains, build and maintain data pipelines (Airflow, Snowflake), drive platform engineering and cost-conscious cloud architecture on AWS, champion AI-assisted development, mentor engineers, ensure operational excellence, automate toil reduction, and guide cross-functional stakeholders.

Build and scale a greenfield digital lending platform with emphasis on front-end experience, cloud-native infrastructure, AI/ML integration, ServiceNow implementations, and mobile/web applications. Work across the full SDLC as a hands-on senior individual contributor, collaborate with product and design, perform code reviews, support QA and production, and integrate with partners and enterprise systems.

Senior contractor engineer will own and evolve Thrive's enterprise platform end-to-end, starting on the Coaching app. Responsibilities include sustaining engineering (reliability, scalability, technical debt), delivering medium-to-large projects, partnering with Product and stakeholders, supporting on-call and incident response during US hours, and shipping high-quality, enterprise-facing features iteratively.

Design and develop core backend components for a blockchain network using Rust, ensuring reliability and scalability in production-grade software.

As a Staff Software Engineer in Infrastructure, you will lead a team in building high-performance, distributed systems, guide project direction, mentor engineers, and improve data ingestion architecture.

Lead development and architecture for Pega-based workflow and case management solutions. Build scalable, highly available systems, integrate APIs and databases, drive CI/CD and TDD practices, mentor engineers, prototype Pega features (including Pega Blueprint AI), and improve performance, automation, and testing across the software lifecycle.

The Staff Software Engineer will design and implement components for Impala's query engine, lead projects for distributed systems, and improve performance through analysis and troubleshooting.

Build and own a framework-agnostic charting engine core and its React binding: rendering layers, real-time data plumbing, indicator math, drawing tools, performance (60fps) discipline, visual testing, architectural leadership, mentoring, and integrations across web and mobile.

Design, build, and operate full‑stack features and platforms for Horizon. Work across frontend, backend, infrastructure, data, and developer tooling; formulate solutions, ship production code, improve reliability and developer productivity, and expand AI/agent-assisted workflows. Collaborate with product, customers, and cross-functional teams, review code (including agent-generated), and improve internal tooling, observability, and deployment workflows.

Lead design and implementation of GraphQL/semantic APIs on AWS AppSync, integrate data sources with Data Engineering, optimize serverless performance, establish governance and security, drive code quality and testing, mentor junior engineers, and document semantic API patterns.

Lead technical strategy and execution for enterprise software, design and build new systems, improve existing platforms, mentor engineers, collaborate with product and stakeholders, ensure quality/performance, share best practices, analyze costs, and support operational readiness including on-call production support.

Define frontend technical strategy and standards across the org, establish data layer and state management best practices, collaborate with AI Developer Experience on AI-assisted frontend tooling, embed with teams to write code (~50% time), drive platform-level operational excellence, influence executive strategy, and mentor engineers to raise frontend architecture and developer experience.

Senior full‑stack engineer responsible for designing, building, testing, and supporting scalable backend services and user-facing UIs for a healthcare data platform. Works across Agile teams on data ingestion/transformation, APIs, cloud infrastructure, containers, and CI/CD. Leads major initiatives, mentors team members, participates in on-call rotation, and ensures HIPAA/compliance and engineering best practices.

Lead design, development, and maintenance of scalable, cloud-native web applications. Own end-to-end product features, mentor engineers, troubleshoot production incidents, improve performance, implement APIs, and support on-call rotations.

Lead architecture and evolution of Juniper Square’s distributed services, cloud infrastructure, and developer platform. Design scalable, multi-tenant, event-driven systems; build paved-road developer tooling, CI/CD, and observability. Hands-on coding, prototyping, and performance troubleshooting. Enable production AI/LLM workloads, ensure security/compliance, support enterprise upmarket needs, and mentor engineering teams to raise operational excellence and reliability.

Build and deliver end-to-end features across backend APIs (NestJS/TypeScript) and frontend interfaces (React/TypeScript), integrate third-party services, own production services (on-call, monitoring, incident response with Datadog), contribute to architecture, and mentor other engineers. Work across web and React Native mobile apps, and help scale integrations and event-driven systems.