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About ZivtechZivtech is a Philadelphia-based technology services firm that designs and builds thoughtful, durable web products. Our clients range from startups to large non-profits to Fortune 500 companies. We work primarily with mission-driven organizations and long-lived platforms where quality, clarity, and maintainability matter. We're a distributed engineering team that values autonomy, strong communication, and engineers who take real ownership not just of code, but of outcomes. Role OverviewWe're looking for a Senior Software Engineer (Full Stack) who can own work end-to-end from early discovery and estimation through delivery and iteration. This is a senior role with real responsibility: technical leadership, client interaction, and project ownership are core to the job. You'll work directly with clients, project managers, designers, and other engineers. You're expected to lead projects, delegate effectively, make good technical calls, and communicate clearly when things are on track and especially when they aren't. This role also assumes comfort using AI agents as part of a modern engineering workflow. How We Use AI at ZivtechWe treat AI as a force multiplier, not a shortcut and not a replacement for good engineering judgment. Senior engineers at Zivtech are expected to use AI tools and agent-based workflows as part of their day-to-day work, including: First-pass implementation, research, and technical explorationAccelerating code reviews, documentation, and test generationHelping break down work into tickets, acceptance criteria, and estimatesImproving consistency across projects through shared prompts, standards, and workflowsWe value engineers who know: When AI output is good enough and when it needs to be challengedHow to guide AI toward maintainable, secure, and performant solutionsThat ownership and accountability still sit firmly with the humanIf you already use AI this way or want to you'll fit in well here. What You'll DoOwn projects from start to finish requirements, architecture, implementation, delivery, and post-launch supportServe as a technical lead and primary engineering contact for clientsCommunicate clearly with clients and internal teams, translating business needs into technical decisionsBreak down complex work and delegate effectively to other engineersUse AI agents and AI-assisted workflows to increase leverage and delivery velocitySupport sales, architects, and leadership with discovery, estimates, and technical directionWork on the critical path to ensure projects ship on time and within scopeWrite high-quality front-end and back-end codePerform code reviews and help set engineering standardsMentor other engineers through feedback, pairing, and reviewIdentify technical and delivery risks early and surface them clearlyPartner with project managers to manage scope, timelines, and budgets Required Skills and Experience5+ years building and shipping production web applicationsDemonstrated ability to lead projects and own outcomesStrong full-stack experience front-end and back-endProfessional experience with React or another modern JavaScript frameworkSolid PHP experience, including OOP and common design patternsDeep experience with Drupal (8/9/10) custom modules, theming, site buildingExperience with Drupal migrationsStrong Git fundamentals and modern development workflowsExperience integrating with external APIs and third-party systemsComfort with SQL and database-backed applicationsCommand-line fluency and tools like DrushStrong communication and listening skills especially client-facingGood judgment, attention to detail, and the ability to work independentlyStrong attention to detail applicants should include the phrase Greetings Zivtech Crew somewhere in their cover letter or application materials Nice to HavePrior experience with AI-assisted or agent-based development workflowsExperience building or maintaining reusable component libraries or design systemsAcquia Drupal certificationsAgency or consulting backgroundExperience mentoring junior or mid-level engineers If this sounds like the kind of role where you'd do your best work owning problems, leading projects, working directly with clients, and using modern tools responsibly please send us your resume, cover letter, and salary requirements.