Source Job

$120,000–$150,000/yr
US

  • Learn and contribute to backend systems and APIs that ingest, process, and route data.
  • Design, develop, test, and maintain clear, maintainable code in Node.js/TypeScript.
  • Collaborate with a cross-functional team to understand requirements and turn feature specifications into implementable stories and code.

Javascript TypeScript Node.js API Backend

20 jobs similar to Software Engineer I, Core Platform

Jobs ranked by similarity.

$190,000–$220,000/yr
US Canada Unlimited PTO

  • Build new products and features 0 to 1
  • Take ownership of projects from conception all the way to shipping, ensuring modular, maintainable, and high-quality code
  • Deliver value to our end users across our entire system while considering performance, scale, security, and maintainability

Owner.com is an AI growth system for local restaurants, focusing on improving SEO, marketing, and online ordering to increase first-party orders. With a team in the low hundreds, it includes top talent from companies like Shopify, HubSpot, and DoorDash, with plans to scale even faster.

Global

  • Design, optimize, and maintain backend systems for performance and reliability.
  • Identify and resolve runtime, scalability, and integration issues across distributed services.
  • Improve server-side efficiency, stability, and throughput for demanding workloads.

Jobgether is a platform that uses AI to help candidates find jobs. They focus on quickly and fairly reviewing applications to find the best candidates for their partner companies to hire.

Europe

  • Take ownership of complex backend systems end-to-end.
  • Design and build robust, scalable APIs and distributed systems.
  • Collaborate with Product, Frontend, and Design teams.

The company is one of Europe’s fastest-growing Series A startups. They offer exciting and challenging work with real impact and ownership.

Europe

  • Build and maintain backend integrations with vendor cloud platforms across EV charging and/or home energy systems.
  • Design and ship production-ready backend features that support real customer use cases.
  • Work closely with Product, Support, and Commercial teams to translate customer needs into technical solutions.

Enode's platform powers the next generation of green energy apps by connecting and optimizing the world’s energy devices through their APIs. They work with the world’s leading energy companies and green tech innovators, giving them instant access to over 250M+ consumers.

  • Design and build scalable data pipelines that ingest, process, and transform high-volume event streams and historical data
  • Develop and maintain APIs that deliver analytics, trend reports, and drill-down capabilities to internal teams and external customers
  • Build robust infrastructure for data quality monitoring, ensuring accuracy and completeness across customer and artifact datasets

Socket helps devs and security teams ship faster by cutting out security busywork. They have raised $65M in funding from top angels, operators, and security leaders.

$150,000–$220,000/yr
US

  • Ownership over large domains and features related to card processing/issuing, and core ledgering of financial transactions
  • Play a critical role in the development, design, and maintenance of Flex's platform and services.
  • Architect well thought-out services and data models that ensure Flex's continued growth

Flex is building a finance super app for premium business owners, reimagining the financial workflow and services for entrepreneurs. They focus on mid-market businesses and are a fully remote company, with a team that values autonomy, clarity, and quality.

India

  • Actively participate in the overall application lifecycle.
  • Define and communicate technical and design requirements.
  • Developing and maintaining all server-side network components.

Genea builds on a foundation of listening to and serving commercial real estate customer’s needs. They've earned the trust and loyalty of 21 of the top 25 largest commercial real estate companies in the US and continue to prove their value to them every day.

$110,775–$155,085/yr
Canada

  • Develop features that integrate Cribl’s data stream processing engine with data systems.
  • Design, develop, test, and maintain clear, concise, and robust code.
  • Collaborate with other engineers, product managers, UX designers, and business teams.

Cribl is a data engine for IT and Security, trusted by big names in demanding industries to solve pressing data needs. They are a remote-first company that values collaboration, curiosity, and putting customers first, fostering a culture where employees are empowered to do their best work.

US

  • Develop, maintain, and optimize server-side components, APIs, and microservices.
  • Collaborate with front-end developers to integrate elements and ensure seamless user experiences.
  • Design and implement high-performance applications with reusable, testable, and efficient code.

Jobgether is connecting talent with opportunities by leveraging AI. They focus on quick, objective, and fair reviews of applications against core requirements.

Global

  • Help build the missing piece of the modern data stack: Reporting Automation
  • Build new user-facing features with everything from database models to async workflows and UI components.
  • Develop features like AI insights, native charts, and collections.

Rollstack is revolutionizing how businesses share and communicate data and insights by automating slide decks and documents. They are backed by Insight Partners and Y Combinator, with a remote-friendly workplace and a diverse team that values intelligence and kindness.

$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 Unlimited PTO 12w maternity

  • Lead key components of our Core Services, including People Recommendations Engines
  • Apply your in-depth knowledge with databases such as Postgres SQL, MongoDB, and ElasticSearch
  • Work hand-in-hand with cross-functional teams, ranging from UX designers to data scientists

Raya is a company that enriches lives by fostering relationships through quality, in-person interactions. They prioritize learning and teamwork and love giving people the opportunity to champion solutions to big challenges and grow into better versions of themselves.

$175,000–$185,000/yr
US Canada Unlimited PTO

  • Guide your team in delivering high quality, well tested technical solutions providing technical and project oversight
  • Lead by example through the quality of your code and your approach to your work
  • Own projects through the entire software development lifecycle - from planning and development to validation, iteration, and maintenance

Trellis is rewriting the insurance experience from the inside out. They're a profitable, fast-growing Series A startup backed by General Catalyst, QED, NYCA, and Amex Ventures that is remote-first, moves quickly, experiments boldly, and builds with intention.

Americas

  • Lead responses to critical incidents and customer-impacting events
  • Work directly with enterprise customers
  • Collaborate across engineering, product, and support to solve urgent problems

Zapier is a company that builds and uses automation to make work more efficient. They are a remote company leading the way in AI automation and have helped small businesses increase productivity and serve their customers better through integrations and workflow automations.

Canada

  • Design, build, and maintain full-stack features across data applications.
  • Develop and evolve data pipelines, event-driven services, and APIs.
  • Contribute to system design decisions, balancing scalability, performance, reliability, and developer experience.

Solink provides businesses with tools to transform video security into real-time operational insights. They are a rapidly growing company with over 30,000 locations across 32+ countries, recognized by Deloitte’s Fast 50™ and Fast 500™ and as one of Ottawa’s Best Places to Work.

$158,000–$198,000/yr
North America

  • Design and build distributed, scalable, and high-performance backend systems.
  • Develop and maintain services for smart contract interaction.
  • Build performant pipelines for blockchain data ingestion and processing.

Ava Labs simplifies deploying high-performance solutions for Web3 through innovations on Avalanche. Founded by computer scientists and Wall Street veterans, they aim to redefine how people build permissionless networks.

US

  • Develop and maintain backend services that enable digital asset transactions and crypto product functionality
  • Design APIs and event-driven architectures to support high-volume, secure, and efficient transaction processing
  • Partner with platform and infrastructure teams to ensure system scalability, resilience, and observability

Jobgether is a company that helps partner companies find the right candidates for their open positions. They use an AI-powered matching process to ensure applications are reviewed quickly, objectively, and fairly against the role's core requirements.

India

  • Design, implement, and scale backend services in .NET Core and front-end applications.
  • Design and evolve highly scalable, reliable systems for high-traffic environments with strong observability and extensibility.
  • Collaborate closely with Product, Design, and Data from discovery through launch to deliver impactful features.

JustAnswer is the leading AI + Human professional services platform, on a mission to revolutionize how people access expert help. JustAnswer has a 200+ engineer organization that delivers at pace and fosters a positive, collaborative culture focused on learning, impact, and continuous improvement.

$180,000–$220,000/yr
US

  • Design, build, and maintain backend-heavy features in a large, long-lived codebase
  • Own the technical health of a core product area, including performance, reliability, and scalability
  • Partner with the CEO/CTO to align on architectural direction and translate ideas into shippable solutions

ChartHop is an AI-native HR & Organizational Intelligence platform, connecting your people and business data in one technology to deliver performance, engagement, HRIS, compensation, org planning and analytics. As a small, agile team, they value engineers who are curious, pragmatic, and eager to learn.

Colombia

  • Driving technical decisions and facing complex business challenges with clients and cross-functional teams;
  • Conducting code reviews and ensuring adherence to architectural standards;
  • Mentoring and coaching team members on best practices, code quality, and technical growth.

CI&T unites human expertise with AI to create scalable tech solutions. With over 8,000 employees around the world, they've built partnerships with more than 1,000 clients and value a diverse, inclusive, and safe work environment.