Third Sector Intelligence, Inc.
Sr. Software Engineer
Third Sector Intelligence, Inc., California, Missouri, United States, 65018
Senior Software Engineer (Remote - Location:
California, Colorado, Oregon, or Washington only) 3Si (Third Sector Intelligence) is a mission-driven SaaS company helping governments, nonprofits, and philanthropies use data to improve the lives of children. We build Early Childhood Integrated Data Systems (ECIDS) that help states and cities identify and address service gaps, with a deep commitment to privacy, security, and responsible data use. Were seeking a
Senior Software Engineer
to help build and launch a next-generation platform from the ground upwith a strong emphasis on
Flask, React, and data visualization . This role will contribute directly to building core products that deliver insights to public-sector partners nationwide. If you're a senior engineer who thrives in startup environments, cares about user experience, and enjoys working across the stack to bring ideas to life, this is your opportunity to make an impact. What Youll Do Lead the design and implementation of scalable, secure web applications and APIs using
Python (Flask/FastAPI)
and
React Develop modular, client-driven features using
feature flags
and configurable components Build impactful, clean, and user-friendly
dashboards and data visualizations Own deployment pipelines and infrastructure using
cloud platforms
(AWS, Azure, or GCP) Implement
authentication/authorization
workflows and manage integrations with secure, real-world data sources Apply
DevOps best practices CI/CD, containerization (Docker/Kubernetes), and infrastructure as code (Terraform or similar) Collaborate with TPMs, clients, and cross-functional teams to align engineering work with compliance and product goals Maintain and document code in GitHub, contributing to a clean, maintainable codebase Occasionally support API integrations or
light web scraping
to bring in external data Mentor and support other engineers, sharing knowledge across frontend, backend, and architecture Contribute to building
self-service tools
that empower end users and reduce reliance on IT Requirements
What You Bring 7+ years of professional experience in software engineering (full-stack, backend/platform, or DevOps) Strong deployment experience with
cloud infrastructure
(AWS, Azure, or GCP) Experience architecting secure applications for
high-compliance environments
(government, health, education, etc.) Solid
SQL skills
and experience working with diverse data sources Demonstrated ability to build and consume REST APIs; comfortable with light scraping tasks Strong understanding of secure authentication and data protection protocols A collaborative mindset and high attention to detail, especially around code quality and security Excellent communication skills and experience working with distributed teams A collaborative mindset and high attention to detail, especially around code quality and security Startup-savvy : Youve shipped products from scratchsometimes soloand love tackling ambiguous problems. Full-stack expertise : Youre comfortable in Flask + React, and have no fear of jumping into infrastructure or UX details. Data fluent : You know how to make complex data understandable through intuitive interfaces and thoughtful architecture. Product-minded : You think like a founder, always optimizing for impact, user value, and long-term growth. Mission-aligned : Youre energized by work that improves livesand thrive in a collaborative, remote team with a social impact focus. Bonus Points For Experience with
Databricks
or other advanced analytics platforms Familiarity with
low-code/no-code platforms
or rebuilding BI reports (e.g., Tableau, PowerBI) in web apps Past work in
consulting ,
client-facing roles , or high-trust sectors like education or healthcare Interest in
AI tooling
(e.g., OpenAI, CoPilot) to improve engineering workflows A clear passion for serving government, nonprofit, or mission-oriented organizations Experience leading a project, product, or team Prior experience building in civic tech, health tech, or other high-trust sectors Why Join Us? Build meaningful tools that make a difference in early childhood systems across the U.S. Help transform a trusted consultancy into a modern, product-driven platform Join a small, nimble team where your work will have visible, high-impact outcomes Enjoy a
fully remote culture , with flexibility and collaboration at its core 3SI Perks 3Si offers a professional and fun work environment. We recognize and value our employees and strive to create a supportive environment for our team. Here are some of the "perks" we provide to ensure our employees thrive: Competitive compensation with a base salary range of $160-175K, plus an annual bonus plan. 100% Company sponsored Medical, Dental, Vision, STD, EAP, and voluntary life/AD&D plans. Paid Time Off starting at 3 weeks per year and 11 paid holidays. Home office stipend upon hire and annually every January thereafter.
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California, Colorado, Oregon, or Washington only) 3Si (Third Sector Intelligence) is a mission-driven SaaS company helping governments, nonprofits, and philanthropies use data to improve the lives of children. We build Early Childhood Integrated Data Systems (ECIDS) that help states and cities identify and address service gaps, with a deep commitment to privacy, security, and responsible data use. Were seeking a
Senior Software Engineer
to help build and launch a next-generation platform from the ground upwith a strong emphasis on
Flask, React, and data visualization . This role will contribute directly to building core products that deliver insights to public-sector partners nationwide. If you're a senior engineer who thrives in startup environments, cares about user experience, and enjoys working across the stack to bring ideas to life, this is your opportunity to make an impact. What Youll Do Lead the design and implementation of scalable, secure web applications and APIs using
Python (Flask/FastAPI)
and
React Develop modular, client-driven features using
feature flags
and configurable components Build impactful, clean, and user-friendly
dashboards and data visualizations Own deployment pipelines and infrastructure using
cloud platforms
(AWS, Azure, or GCP) Implement
authentication/authorization
workflows and manage integrations with secure, real-world data sources Apply
DevOps best practices CI/CD, containerization (Docker/Kubernetes), and infrastructure as code (Terraform or similar) Collaborate with TPMs, clients, and cross-functional teams to align engineering work with compliance and product goals Maintain and document code in GitHub, contributing to a clean, maintainable codebase Occasionally support API integrations or
light web scraping
to bring in external data Mentor and support other engineers, sharing knowledge across frontend, backend, and architecture Contribute to building
self-service tools
that empower end users and reduce reliance on IT Requirements
What You Bring 7+ years of professional experience in software engineering (full-stack, backend/platform, or DevOps) Strong deployment experience with
cloud infrastructure
(AWS, Azure, or GCP) Experience architecting secure applications for
high-compliance environments
(government, health, education, etc.) Solid
SQL skills
and experience working with diverse data sources Demonstrated ability to build and consume REST APIs; comfortable with light scraping tasks Strong understanding of secure authentication and data protection protocols A collaborative mindset and high attention to detail, especially around code quality and security Excellent communication skills and experience working with distributed teams A collaborative mindset and high attention to detail, especially around code quality and security Startup-savvy : Youve shipped products from scratchsometimes soloand love tackling ambiguous problems. Full-stack expertise : Youre comfortable in Flask + React, and have no fear of jumping into infrastructure or UX details. Data fluent : You know how to make complex data understandable through intuitive interfaces and thoughtful architecture. Product-minded : You think like a founder, always optimizing for impact, user value, and long-term growth. Mission-aligned : Youre energized by work that improves livesand thrive in a collaborative, remote team with a social impact focus. Bonus Points For Experience with
Databricks
or other advanced analytics platforms Familiarity with
low-code/no-code platforms
or rebuilding BI reports (e.g., Tableau, PowerBI) in web apps Past work in
consulting ,
client-facing roles , or high-trust sectors like education or healthcare Interest in
AI tooling
(e.g., OpenAI, CoPilot) to improve engineering workflows A clear passion for serving government, nonprofit, or mission-oriented organizations Experience leading a project, product, or team Prior experience building in civic tech, health tech, or other high-trust sectors Why Join Us? Build meaningful tools that make a difference in early childhood systems across the U.S. Help transform a trusted consultancy into a modern, product-driven platform Join a small, nimble team where your work will have visible, high-impact outcomes Enjoy a
fully remote culture , with flexibility and collaboration at its core 3SI Perks 3Si offers a professional and fun work environment. We recognize and value our employees and strive to create a supportive environment for our team. Here are some of the "perks" we provide to ensure our employees thrive: Competitive compensation with a base salary range of $160-175K, plus an annual bonus plan. 100% Company sponsored Medical, Dental, Vision, STD, EAP, and voluntary life/AD&D plans. Paid Time Off starting at 3 weeks per year and 11 paid holidays. Home office stipend upon hire and annually every January thereafter.
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