Source Job

US 3w PTO

  • Focus on core components of the Steer CRM, optimizing data ingestion and processing to revolutionize automation tools.
  • Be ready to pivot and shift focus based on evolving business needs, working on new or existing integrations.
  • Partner closely with Product to understand user pain points, ensuring every line of code adds tangible value.

SaaS LLM PostgreSQL MySQL MongoDB

20 jobs similar to Principal Full Stack Engineer

Jobs ranked by similarity.

US

  • Architect and evolve internet-scale systems with performance, reliability, and scalability.
  • Lead the technical direction for Ruby on Rails and React applications across the platform.
  • Design clean, extensible APIs and modern front-end architectures that deliver fast, intuitive user experiences.

OfficeSpace is the AI workplace management platform that helps teams plan, connect, and perform in the modern workplace. They are a performance-based, PE-backed company, that hires based on merit and a willingness to do what it takes to succeed long-term.

$171,600–$224,300/yr
US Unlimited PTO

  • Build and integrate tools to optimize contracting, eligibility, and billing processes.
  • Identify ways to improve, mentor others, and remove ambiguity as an informal team leader.
  • Leverage AI and ML tooling to deliver innovative solutions to complex problems.

Omada Health is a digital care provider that empowers people to achieve their health goals through sustainable behavioral change. They strive to build an inclusive culture where differences are celebrated and leveraged to inform better design and business decisions.

Europe

  • Apply SRE principles to Customer Success and enable monitoring for key customers.
  • Detect and prioritize critical issues affecting the platform's reliability.
  • Proactively identify and implement improvements that enhance platform performance.

Jobgether is a platform that matches job seekers with companies using AI. They aim to ensure applications are reviewed quickly and fairly, connecting top candidates with hiring companies.

US

  • Build and ship features across frontend and backend systems
  • Move seamlessly between Next.js, SvelteKit, and Hono depending on what the problem requires
  • Work with Postgres as the primary data layer, designing schemas and optimizing queries

SERHANT. is the most followed real estate brand in the world, calibrated for the marketplace of tomorrow, delivering proven results for buyers, sellers, and developers. SERHANT. revolutionizes the traditional brokerage model by innovating through media and content creation and is powered by a full-service in-house film studio as well as an amplification platform.

US Canada

  • Drive End-to-End Implementation: Own the technical and operational setup for our customers.
  • Configure Workflows & Templates: Translate firm Standard Operating Procedures into EvenUp by setting up Smart Workflows, task plans, and document templates.
  • Write & Iterate AI Prompts: Draft, test, and refine prompts, exercising strong judgment on quality thresholds for v1 launches.

EvenUp is on a mission to close the justice gap using technology and AI. We empower personal injury lawyers and victims to get the justice they deserve. They are one of the fastest-growing vertical SaaS companies and backed by top VCs.

US

  • Optimize and scale our PostgreSQL (Supabase) infrastructure
  • Design indexing, partitioning, and query strategies for large-scale media datasets
  • Improve performance across ingestion, enrichment, and retrieval pipelines

Kled is building the largest opt-in human data network in the world. Since launching their mobile app in 2026 and scaling to 200,000+ active data contributors, they have raised $5M+ from investors behind SpaceX, Airbnb, Coinbase, xAI, OpenAI, Anthropic, Spotify, Lyft, and Uber.

Global

  • Collaborate with product management and stakeholders to deliver SaaS solutions.
  • Design, develop, and maintain backend services using Python and FastAPI for agentic workflows.
  • Contribute to developing multi-agent systems and integrate agents with third-party tools.

Granicus is dedicated to transforming the Govtech industry by uniting governments and constituents through technology. They offer cloud-based solutions for communications, website design, meeting management, and digital services, empowering stronger relationships between government and residents. The company has 5,500 federal, state, and local government agency customers.

Global

  • Design and implement features end-to-end, from robust backend services and APIs in Java/Kotlin and Spring Boot to polished, responsive user interfaces in Angular.
  • Work within agile product teams to deliver high-quality features, participate in code reviews, and contribute to technical discussions across both backend and frontend.
  • Tackle complex technical problems that span the full stack, propose innovative solutions and continuously improve our development practices, tooling, and user experience.

Aiwyn is transforming the way accounting firms manage the entire revenue lifecycle. Backed by top-tier investors, they are one of the fastest-growing scale-up SaaS companies in the world, building category-defining technology with world-class people, processes, and products.

US

  • Drive technical strategy and architectural decisions across multiple teams and stack layers
  • Solve ambiguous, cross-cutting problems that span dashboards, mobile, AI, and backend services
  • Define and champion spec-driven development practices organization-wide

SERHANT. is the most followed real estate brand in the world, calibrated for the marketplace of tomorrow, delivering proven results for buyers, sellers, and developers. SERHANT. revolutionizes the traditional brokerage model by innovating through media and content creation and is powered by a full-service in-house film studio as well as an amplification platform.

$200,000–$250,000/yr
US 2000w PTO

  • Lead and develop a team of Solutions Architects, driving Webflow adoption and expansion through strategic guidance.
  • Coach and develop Solutions Architect ICs, helping them grow their technical expertise and customer engagement skills.
  • Partner closely with Sales, Customer Success, and Product teams to identify friction points and advocate for customer needs.

Webflow is building the world’s leading AI-native Digital Experience Platform as a remote-first company built on trust, transparency, and creativity. They empower teams to design, launch, and optimize for the web without barriers, serving entrepreneurs to global enterprises, with a future-oriented and collaborative culture.

Global Unlimited PTO

  • Design, build, and maintain full-stack features across our SaaS platform.

Ocra is building a scalable SaaS platform for the mobility, hospitality, and event parking industries. They are looking for a mid-level full-stack engineer who is energized by working in a small, distributed team where autonomy, curiosity, and adaptability matter.

5w PTO

  • Own the design, implementation, and evolution of complex product areas and backend systems.
  • Build and maintain user-facing interfaces and backend services/APIs as required by the product.
  • Lead by example in code reviews, uphold and evolve shared engineering standards, and drive improvements to the quality, structure, and maintainability of the codebase over time.

NexGen Cloud is building a next-generation GPU cloud infrastructure. They are a scale-up by design, moving fast, solving complex problems and building technology that has real-world impact, with a team of curious, driven people who care deeply about quality, ownership and collaboration.

Europe US 3w PTO

  • Architect and implement AI-assisted workflow building capabilities.
  • Design systems that provide LLMs with the right context: workflow state, user intent, constraints, and history.
  • Build tool-driven agent behaviour: calling internal tools, validating outputs, correcting mistakes, and recovering gracefully

n8n is the open workflow orchestration platform built for the new era of AI. They give technical teams the freedom of code with the speed of no-code, so they can automate faster, smarter, and without limits. Since their founding in 2019, they’ve grown into a diverse team of over 220 working across Europe and the US, connected by a shared builder spirit and with their centre of gravity in Berlin.

Europe

  • Become a core member of our product engineering team, owning features from idea to production.
  • Design and build LLM-based scrapers that extract ranking data for prompts across major AI platforms.
  • Develop LLM-driven workflows and integrations that automate data collection, analysis, and insight generation.

saas.group is a company established in 2017 with a mission to turbocharge promising B2B SaaS ventures. They specialize in acquiring small software treasures and polishing them into industry stars with a dynamic, fully remote team of nearly 350 colleagues spanning 44 countries.

Global

  • Develop and deliver full-stack AI-powered applications.
  • Work closely with customers and internal teams to tailor solutions.
  • Write clean, tested, and maintainable code.

SD Solutions is a staffing company operating globally. They connect talented individuals with companies.

US Canada Unlimited PTO

  • Automate operational tasks across all environments.
  • Design and maintain PostgreSQL database infrastructure components.
  • Respond to production incidents and platform emergencies.

GitLab is the intelligent orchestration platform for DevSecOps. They enable organizations to increase developer productivity, improve operational efficiency, reduce security and compliance risk, and accelerate digital transformation. GitLab has more than 50 million registered users.

Europe 6w PTO

  • Designing & building applications using Python.
  • Building and operating agentic systems that power GenAI applications.
  • Supporting component design, development and maintenance.

Nearform is an independent team of data & AI experts, engineers, and designers who build intelligent digital solutions and capability at pace. They create AI-enabled solutions that enhance digital experiences, empower developers, and deliver measurable results. Nearform has a team of 500 experts in 20+ countries and is trusted by leading enterprises.

US

  • Develop and enhance robust product features across the frontend and backend.
  • Help improve code quality, workflow and test coverage over time.
  • Participate in documenting and scoping of features and their architecture.

Grapevine powers the Giving Circle movement, helping people connect and pool donations to make collective grants to nonprofits and has moved over $54M+ in donations to more than 8k+ nonprofits. They are a high-performing team driven by the goal of making a difference every day, valuing openness, intentionality, collaboration, and spiritedness.

  • Communicate with product managers to understand business needs and translate them into technical requirements.
  • Design and develop responsive web applications using Next.js and robust backend services using Node.js.
  • Implement AI-augmented engineering practices using tools like Cursor, Claude Code, and Anti-gravity to accelerate development.

Jobbatical uses AI and automation to make the employee visa and relocation process faster and less expensive, helping businesses hire talent globally. We are a team of 40 passionate professionals, backed by top investors, committed to making international relocation as easy as booking a flight.

US

  • Focuses on simplifying the infrastructure behind large language model (LLM) integrations, runtime orchestration, and data workflows.
  • Work at the intersection of LLM tooling, serverless infrastructure, and financial data systems.
  • Make spawning new research pipelines seamless and scalable.

The client is one of the world's fastest-growing AI companies accelerating the advancement and deployment of powerful AI systems. They help customers by working with the world’s leading AI labs to advance frontier model capabilities and leveraging that work to build real-world AI systems that solve mission-critical priorities for companies.