Software Engineer / Elixir / Remote
Posted Today by Motion Recruitment
Negotiable
Inside
Remote
Philadelphia, Pennsylvania
Summary: This role is for a Senior Software Engineer on a contract basis, focusing on building and scaling backend services using Elixir, Phoenix, LiveView, and PostgreSQL in a fully remote setting. The position involves collaboration with product, design, and infrastructure teams to create reliable applications that contribute to sustainability and energy efficiency. The organization is a private equity-backed technology leader in intelligent building systems. The role offers significant ownership and technical challenges in a modern, distributed platform environment.
Key Responsibilities:
- Design, build, and maintain backend services and platform features.
- Collaborate with product, design, and engineering teams on feature development.
- Optimize performance, scalability, and reliability of systems.
- Conduct code reviews, testing, and technical mentoring.
- Support deployments, debugging, and production issue resolution.
Key Skills:
- 6+ 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 Ecto.
- Strong 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.
Salary (Rate): £60/hr
City: Philadelphia
Country: United States
Working Arrangements: remote
IR35 Status: inside IR35
Seniority Level: Senior
Industry: IT
This 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 & Experience- 6+ 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 Ecto
- Strong 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
- Experience 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
Tech Breakdown
- Elixir / Phoenix / LiveView: 60%
- PostgreSQL & Data Modeling: 15%
- Distributed Systems & Backend Architecture: 15%
- CI/CD, DevOps & Infrastructure: 10%
- Design, 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%
- $80/hr on a w2
You will receive the following benefits:
- Medical Insurance - Four medical plans to choose from for you and your family
- Dental & Orthodontia Benefits
- Vision Benefits
- Health Savings Account (HSA)
- Health and Dependent Care Flexible Spending Accounts
- Voluntary Life Insurance, Long-Term & Short-Term Disability Insurance
- Hospital Indemnity Insurance
- 401(k) including match with pre and post-tax options
- Paid Sick Time Leave
- Legal and Identity Protection Plans
- Pre-tax Commuter Benefit
- 529 College Saver Plan
Motion 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.