Software Engineer / Elixir / Remote

Philadelphia, Pennsylvania100% RemoteContract$75/hr - $90/hrThis employer is seeking a Senior Software Engineer (Contract) for a fully remote, US-based engagement. This role focuses on building and scaling backend services and platform capabilities using Elixir, Phoenix, LiveView, and PostgreSQL, while supporting mobile platform integrations and infrastructure. The organization is a private equity-backed technology leader dedicated to accelerating the transition to a more sustainable energy future through intelligent, grid-interactive building systems. This is an opportunity to work on high-impact, real-world systems that directly contribute to sustainability and energy efficiency at scale. Engineers on this team collaborate closely with product, design, and infrastructure partners to deliver reliable, performant applications used by enterprise customers, utilities, and facility operators. The role offers meaningful ownership, strong technical challenges, and the chance to help shape a modern, distributed platform in a collaborative and forward-thinking environment. Required Skills & Experience6+ years of professional software development experience, including ownership of production systems 3+ years of hands-on Elixir development in production environments Experience building applications using Phoenix, LiveView, and EctoStrong experience with PostgreSQL, including query optimization, indexing, transactions, and schema design Working knowledge of OTP concepts (GenServers, Supervisors, Tasks, Agents) Experience with distributed systems architecture, scalability, and reliability best practices Experience with background job processing tools (e.g., Oban, Broadway, or similar) Strong testing practices and experience with automated test frameworks Experience building and maintaining APIs and backend services consumed by mobile or frontend clients Solid understanding of CI/CD pipelines and deployment workflows Strong debugging, analytical, and problem-solving skills Experience collaborating cross-functionally with Product and Design teams Desired Skills & ExperienceExperience supporting mobile applications and platform integrations Familiarity with native mobile ecosystems (iOS/Android) at an architectural level Experience with cloud platforms such as AWS, GCP, or Azure Experience with observability tools (logging, metrics, tracing) Familiarity with containerization and orchestration (Docker, Kubernetes) Experience working in energy, IoT, or distributed hardware-integrated systems Experience using AI-assisted development tools (e.g., GitHub Copilot, Claude) to accelerate delivery Previous experience in high-growth or PE-backed environments What You Will Be DoingTech BreakdownElixir / Phoenix / LiveView: 60% PostgreSQL & Data Modeling: 15% Distributed Systems & Backend Architecture: 15% CI/CD, DevOps & Infrastructure: 10% Daily ResponsibilitiesDesign, build, and maintain backend services and platform features: 50% Collaborate with product, design, and engineering teams on feature development: 20% Optimize performance, scalability, and reliability of systems: 15% Conduct code reviews, testing, and technical mentoring: 10% Support deployments, debugging, and production issue resolution: 5% The Offer$80/hr on a w2 You will receive the following benefits:Medical Insurance - Four medical plans to choose from for you and your familyDental & Orthodontia BenefitsVision BenefitsHealth Savings Account (HSA)Health and Dependent Care Flexible Spending AccountsVoluntary Life Insurance, Long-Term & Short-Term Disability InsuranceHospital Indemnity Insurance401(k) including match with pre and post-tax optionsPaid Sick Time LeaveLegal and Identity Protection PlansPre-tax Commuter Benefit529 College Saver PlanMotion Recruitment Partners (MRP) is an Equal Opportunity Employer. All applicants must be currently authorized to work on a full-time basis in the country for which they are applying, and no sponsorship is currently available. Employment is subject to the successful completion of a pre-employment screening. Accommodation will be provided in all parts of the hiring process as required under MRP’s Employment Accommodation policy. Applicants need to make their needs known in advance.