Senior Software Engineer

TEKsystems•Seattle, WA

3d•$65 - $72•Onsite

About The Position

This initiative is for detecting any breakage in traveler experience and attempting to proactively resolve it. They've already built an initial version of the proactive engine and looking to build it out further and add automations for the resolutions. Looking for 2 full stack engineers to design, build, and ship end to end features across backend services (Java/Kotlin), web frontends (React), and mobile apps. They'll lead the technical design, raise the bar on code quality, own dependency management strategies, and help the team deliver iteratively in an Agile environment.

Requirements

8+ years of professional software engineering experience, including 3+ years delivering full stack features to production.
Strong proficiency in Java (11+/17) and Kotlin; expertise with Spring Boot (or Ktor), JPA/Hibernate, SQL design, and caching (e.g., Redis).
Frontend proficiency with React and TypeScript; hands on with state management (Redux/Zustand), routing, and modern build tooling (Vite/Webpack).
Mobile experience building and shipping mobile apps in Kotlin (Coroutines, Jetpack/Compose); familiarity with app store release processes and CI for mobile.
Testing expertise: JUnit 5/Mockito/Testcontainers for backend; Jest/React Testing Library and Cypress/Playwright for web; Android unit/UI tests.
Deep experience in dependency management and supply chain security:
Gradle/Maven configuration, dependency graphs, and BOM usage.
npm/yarn/pnpm workflows, lockfiles, and monorepo strategies.
Vulnerability scanning, license compliance, and SBOM generation.
CI/CD and DevOps fundamentals: Git, trunk based or GitFlow, Docker, artifact versioning, environment promotion.
Cloud experience with at least one major provider (AWS/GCP/Azure) and common managed services; basic Kubernetes familiarity is a plus.
Strong communication, cross functional collaboration, and mentoring skills.

Nice To Haves

Microservices patterns; event streaming (Kafka), gRPC.
Server-side rendering and app frameworks (Next.js), Node.js/Express for BFFs.
Kotlin Multiplatform Mobile or React Native experience.
IaC (Terraform), secrets management, and policy as code.
Domain driven design, data modeling, and migration strategies.
Performance tuning and profiling across backend, web, and mobile.
Experimentation/feature flags and A/B testing.

Responsibilities

Design, build, and maintain scalable backend services in Java/Kotlin (e.g., Spring Boot/Ktor) and REST/GraphQL APIs.
Develop high-quality web applications in React (TypeScript), integrating with backend services and design systems.
Contribute to mobile development, primarily Android (Kotlin, Jetpack/Compose); optionally cross platform (React Native) where applicable.
Own end to end feature delivery: schema design, APIs, UI/mobile, testing, deployment, and observability.
Lead dependency management practices across the stack:
Define versioning and upgrade strategies (BOMs, semantic versioning, scheduled updates).
Manage build and package tools (Gradle/Maven, npm/yarn/pnpm).
Maintain artifact repositories and SBOMs; remediate vulnerabilities and license issues (e.g., Dependabot/Snyk/OWASP Dependency-Check).
Improve CI/CD pipelines, automated testing, and release engineering (GitHub Actions/GitLab/Jenkins; Nexus/Artifactory).
Drive architectural decisions, system design reviews, and performance/security best practices (OWASP Top 10).
Add observability: structured logging, metrics, tracing; define SLOs and dashboards.
Mentor engineers, perform code reviews, and contribute to engineering standards.
Collaborate with product, design, and QA; participate in Agile ceremonies; break down and estimate work.