Source Job

Canada Unlimited PTO

  • Design and build backend services that support event ingestion, identity stitching, profile creation, and downstream activation.
  • Develop SDKs, packages, and reusable components to support instrumentation, governance, and developer experience.
  • Build internal tools and fullstack workflow surfaces that help teams understand, use, and trust the data flowing through their systems.

Ruby SQL API Kafka SDK

20 jobs similar to Senior Fullstack Developer, Data Foundations

Jobs ranked by similarity.

Canada US

  • Design, build, and maintain integration services connecting financial, operational, and fulfillment workflows.
  • Architect reliable, scalable pipelines that sync data across various systems.
  • Collaborate with Finance and Operations to translate business processes into maintainable technical solutions.

Fullscript is an industry-leading health technology company on a mission to help people get better by providing a platform for practitioners to access products.

US

  • Design, develop, and maintain scalable backend services and APIs, ensuring high performance, security, and reliability.
  • Build and optimize data pipelines to ingest, store, and serve large-scale datasets, including video and ML training data.
  • Own and evolve the foundational data model that powers the entire Frontera platform.

Frontera is reimagining how children with autism and other behavioral health needs get the care they deserve. They bring together clinicians, technologists, and autism specialists to build cutting-edge AI tools that help care teams, expanding access to high-quality services for families everywhere.

  • Architect, develop, and optimize scalable backend services.
  • Drive the evolution of our platform’s core infrastructure.
  • Ensure reliability, performance, and seamless integration across our ecosystem.

ClickUp is building the first truly converged AI workspace, unifying tasks, docs, chat, calendar, and enterprise search, all supercharged by context-driven AI.

  • Design, develop, and maintain scalable backend services and APIs, ensuring high performance, security, and reliability.
  • Build and optimize data pipelines to ingest, store, and serve large-scale datasets, including video and ML training data.
  • Balance rapid development of MVPs and POCs for user research with building robust, long-term backend foundations.

Frontera is reimagining how children with autism and other behavioral health needs get the care they deserve. They bring together clinicians, technologists, and autism specialists to build AI tools that help care teams work smarter and spend more time with the children and families who need them most.

  • Design and build scalable backend systems for clinical trial recruitment platform.
  • Drive technical decisions and set technical direction for areas of ownership.
  • Maintain healthcare compliance standards (HIPAA) and implement security best practices across systems.

Trial Library is a mission-driven health technology company dedicated to improving health equity in cancer care by expanding access to precision medicine.

India

Lead the development of robust, scalable web applications across frontend and backend. Architect and manage API-driven services to support complex analytics and data-intensive applications. Mentor engineers, provide technical guidance, and enforce software engineering best practices.

We use an AI-powered matching process to ensure your application is reviewed quickly, objectively, and fairly against the role's core requirements.

  • Develop and maintain robust, scalable backend systems using Node.js (Express and NestJS).
  • Collaborate with engineers, designers, and product managers to drive projects forward.
  • Tune and optimize database queries for maximum efficiency and performance.

ClickUp is an AI workspace, unifying tasks, docs, chat, calendar, and enterprise search, all supercharged by context-driven AI.

Europe 5w PTO

  • Lead, support, and coach a team of backend engineers, focusing on delivery quality, professional growth, and continuous improvement
  • Align team execution with broader engineering vision and strategy in collaboration with senior leadership
  • Collaborate closely with Product and Design to deliver roadmap commitments iteratively and with strong customer focus

Jobgether is using AI-powered matching process to ensure your application is reviewed quickly, objectively, and fairly against the role's core requirements. Their system identifies the top-fitting candidates and shares the shortlist directly with the hiring company.

Europe Unlimited PTO

  • Architect, design, and build backend systems that transform our internal AI technology into a scalable, market-ready product.
  • Design and optimize APIs, database schemas, and data processing workflows that seamlessly integrate with our AI/ML pipelines.
  • Collaborate with the Product, Data, and Engineering teams to define technical requirements and deliver features that enhance our users’ experience and overall system performance.

Sword Health is shifting healthcare from human-first to AI-first through its AI Care platform. Sword Health has 1,000+ enterprise clients and has raised more than $500 million from leading investors.

LATAM

  • Design, build, and maintain high-volume ETL pipelines and ingestion systems.
  • Architect reusable data integrations to replace legacy, bucket-based custom reporting.
  • Deliver BI-ready datasets consumed by tools such as Snowflake, Tableau, Looker, or internal platforms.

Ubiminds partners with American software product companies to scale their development footprint by offering staff augmentation and employer-of-record services.

Canada 4w PTO

  • Build and evolve core risk systems and decisioning infrastructure.
  • Design and implement scalable backend services that support fraud prevention and compliance.
  • Improve data instrumentation and observability to enable accurate risk analysis and reporting.

Shakepay is reimagining financial services to give every Canadian their fair shake by making buying and earning bitcoin fast, easy, and secure. They have a passionate, loyal, and growing community, with over one million Canadians using Shakepay.

Latin America

  • Design and implement robust backend services using Python (Flask, FastAPI, or similar)
  • Build and maintain Python-based GraphQL servers
  • Design scalable data models using SQL databases and SQLAlchemy

EX Squared LATAM partners with innovative companies to build data-driven platforms that empower smarter decision-making. They value technical excellence, innovation, and ownership and are inclusive and people-first.

Europe

  • Design, build, and maintain backend services and APIs that power core features of the Clari platform.
  • Collaborate with cross-functional teams to design scalable and maintainable solutions.
  • Contribute to improving performance, observability, and overall system reliability.

Clari is deeply committed to building an enterprise-grade platform that serves as the backbone for our customer's most critical business process - Revenue.

Europe

  • Design, develop, and maintain backend services in Rust and Scala.
  • Build and operate distributed, data-intensive applications.
  • Deploy, monitor, and maintain systems on Kubernetes within AWS environments.

Jobgether is a Talent Matching Platform that partners with companies worldwide to efficiently connect top talent with the right opportunities through AI-driven job matching.

US 4w PTO

  • Design and build API endpoints for client integrations.
  • Improve database and query performance.
  • Integrate with a wide range of third-party services.

Kalepa's state-of-the-art AI Copilot platform empowers underwriters to make smarter, faster, and more accurate decisions in the commercial insurance industry.

$156,000–$185,000/yr
US Unlimited PTO 12w maternity 6w paternity

  • Design, develop, and maintain backend services, APIs, and data pipelines that power Knock's customer-facing and internal applications.
  • Architect and build scalable backend services using Node.js and TypeScript, ensuring they integrate seamlessly with our frontend experiences.
  • Contribute to AI-powered features and initiatives, integrating AI services to enhance our risk analysis and decision-making capabilities.

Knock is redefining the home buying and selling experience. They are a passionate team of industry experts who knew there had to be a better, simpler way for people to navigate the journey between homes and have been honored as one of Inc.’s Best Workplaces six times in the past seven years.

US

  • Design scalable systems using modern cloud technology.
  • Build and run experiments to power the growth of Coinbase’s retail products.
  • Articulate a long term vision for maintaining and scaling our backend systems and the teams running them.

Coinbase's mission is to increase economic freedom in the world by building the emerging onchain platform.

$99,000–$185,800/yr
US

  • Build and monitor Cribl’s core data tech stack including data pipelines and data warehouse.
  • Develop cloud-native services and infrastructure that power scalable and reliable data systems.
  • Support Cribl’s growing data science and agentic initiatives by preparing model-ready datasets.

Cribl is a company that provides a data engine for IT and Security for various industries.

US

Contribute to APIs, banking infrastructure, and financial workflows. Design thoughtful APIs, implement resilient processes, and choose infrastructure that prioritizes fault tolerance. Contribute to all layers and components of the application without friction.

Modern Treasury provides trusted infrastructure for money movement, helping teams launch and scale payment experiences in days, not months.

Europe

  • Design and maintain scalable data pipelines.
  • Structure, transform, and optimize data in Snowflake.
  • Implement multi-source ETL/ELT flows (ERP, APIs, files).

QAD Inc. is a leading provider of adaptive, cloud-based enterprise software and services for global manufacturing companies. They help customers in various industries rapidly adapt to change and innovate for competitive advantage.