Castleton Commodities International · 12 hours ago
Senior Data Visualizations Developer
Houston, TX
Full-time
Hybrid
Mid, Senior Level
4+ years expCastleton Commodities International is looking for a Senior Data Visualization Developer to join their Data Science & Technology team. The role involves partnering with commercial stakeholders and data scientists to create intuitive visualizations and modernize existing analytics applications.
Oil and Gas
Responsibilities
Partner directly with commercial teams and data scientists to design and deliver interactive visualization applications
Build and maintain Python-based analytics apps and visualization services using modern frameworks and best practices
Define and evolve the visualization architecture and standards (patterns, reusable components, performance, and maintainability) across CCI
Modernize and migrate existing visualization tools into a scalable, supportable platform
Develop reliable data interfaces (SQL/query patterns, data models) to ensure accurate and performant visualizations
Qualification
Required
Bachelor's or Master's degree in Computer Science or a related STEM field (or equivalent professional experience)
4+ years of professional software development experience in any language; Python strongly preferred
Experience building and maintaining production-grade applications (services and/or web apps), not just one-off analyses
Hands-on experience building data visualization/analytics applications using Python (e.g., Plotly, Dash, Streamlit, or similar frameworks)
A passion for storytelling with data and a flair for developing compelling visualizations
Proficiency in SQL and relational database concepts; ability to write and tune queries for application performance, or at least the competency and drive to learn them quickly
Familiarity with modern engineering practices (version control, code reviews, testing, packaging, and CI/CD concepts)
Ability to translate business needs into well-designed user workflows and visual interfaces; strong communication with technical and non-technical users
Strong attention to detail, ownership mindset, and ability to deliver in a fast-paced, high-intensity environment
High level of personal organization and ability to juggle competing priorities across demanding stakeholders, preferably adept at project management software, e.g., JIRA
Ability to work effectively in a fast-paced, dynamic and high-intensity environment including open-floor plan if applicable to the position, with timely responsiveness and the ability to work beyond normal business hours when required
Preferred
Experience working with Snowflake beyond basic querying (warehousing patterns, performance tuning, role-based access)
Prior experience in energy/commodities trading or other time-sensitive, high-availability environments
Exposure to building analytics features such as time-series visualizations, scenario tooling, or research
Benefits
Competitive comprehensive medical, dental, retirement and life insurance benefits
Employee assistance & wellness programs
Parental and family leave policies
CCI in the Community: Each office has a Charity Committee and as a part of this program employees are allocated 2 days annually to volunteer at the selected charities.
Charitable contribution match program
Tuition assistance & reimbursement
Quarterly Innovation & Collaboration Awards
Employee discount program, including access to fitness facilities
Competitive paid time off
Continued learning opportunities
Company
Castleton Commodities International
Castleton Commodities International is an independent global commodities merchant.
201-500 employees
H1B Sponsorship
Castleton Commodities International has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (14)
2024 (9)
2023 (6)
2022 (11)
2021 (17)
2020 (11)
Funding
Current Stage
Growth StageTotal Funding
$4.18B2025-11-18Debt Financing· $2.11B
2023-11-15Debt Financing· $2.08B
Leadership Team
Lauren Haymond
Managing Director, Global Head of Talent Strateg
Recent News
2025-04-03
Company data provided by crunchbase