Source Job

Europe UK

  • Design and build core APIs for document processing, approval workflows, and analytics.
  • Own the persistence layer with tenant-scoped MySQL databases and evolve abstractions.
  • Scale BLP's platform for large enterprises with cross-tenant capabilities and self-service setups.

Go TypeScript React MySQL Kubernetes

20 jobs similar to Senior Fullstack Engineer

Jobs ranked by similarity.

US Canada 6w PTO

  • Design, build, and operate backend services and APIs for billing, rates, and usage workflows, primarily in Go with some Node.js and TypeScript/React frontend work.
  • Lead complex technical projects from understanding requirements through implementation, testing, rollout, and production support, while improving system correctness and reducing manual tasks.
  • Participate in on-call rotation, enhance monitoring and recovery procedures, and collaborate with cross-functional teams including product, support, and infrastructure.

Grafana Labs provides Grafana Cloud, a fully managed observability platform trusted by over 10,000 organizations for reliability, incident resolution, and telemetry optimization. As a 100% remote company with team members across 40+ countries, we foster a global collaborative culture centered on open-source values, autonomy, and trust.

$140,000–$220,000/yr
North America LATAM Europe

  • Ship product end to end, from backend services and APIs to dashboard and developer-facing UIs.
  • Build the tools developers and agents use to reach Nango: APIs, SDKs, CLI, MCP and the web app.
  • Work directly with customers to understand their integration and agent use cases, then turn what you learn into a product.

Nango is a developer infrastructure company providing API access for agents and apps, enabling AI applications to connect to the real world through integrations. It is YC-backed with multi-million ARR, a team of 14, and over 700 paying customers including Replit and Ramp.

$120,000–$170,000/yr
US

  • Design, develop, and deploy scalable backend services and APIs across the stack.
  • Build and maintain intuitive, performant frontend applications and take end-to-end ownership from architecture to monitoring.
  • Collaborate with product and design teams to define features, participate in design/code reviews, and ensure system reliability.

TENEX is an AI-native MDR provider helping organizations improve cybersecurity via threat detection and rapid response. We are a small, well-funded startup backed by top investors, with a culture of collaboration and community.

$200,000–$275,000/yr
Canada

  • Architect and build backend services and frontend features for inventory, orders, requests for quotes, and invoicing.
  • Plan features, write specifications, and use AI coding agents to accelerate development while reviewing output for quality.
  • Design, deploy, and maintain production systems with a focus on reliability, performance, and maintainability.

This company operates a marketplace for GPU computing. It is a fast-moving startup with a small engineering team.

Americas

  • Develop and operate Alpaca's authentication, authorization, and identity provider services.
  • Write Go for backend services and React/TypeScript for auth-related UI, owning features end to end.
  • Collaborate with engineering teams on identity and access integration and maintain high code quality.

Alpaca is a US-headquartered global leader in agent-first brokerage infrastructure for stocks, ETFs, options, crypto, and more. The company has a diverse team of 400+ globally distributed members and is backed by $400 million in funding, fostering a culture of curiosity, empathy, and accountability.

Global

  • Develop scalable backend services, REST APIs, and microservices using Golang.
  • Build responsive and reusable web applications with React and modern frontend practices.
  • Integrate frontend applications with backend services and support CI/CD, testing, and production reliability.

Miratech is a global IT services and consulting company that helps visionaries change the world by supporting digital transformation for large enterprises. With over 1000 professionals across 25 countries, the company thrives on a culture of Relentless Performance and has a 99% project success rate.

Americas

  • Architect and develop full-stack solutions for Internal Tools, from dashboards to backend services.
  • Collaborate cross-functionally to own features end-to-end, from design to deployment.
  • Mentor peers and contribute to API design across Alpaca's ecosystem.

Alpaca is a US-headquartered global leader in agent-first brokerage infrastructure, providing APIs for stocks, ETFs, options, crypto, and more. We are a diverse global team of 400+ members backed by $400 million.

$140,000–$170,000/yr
US

  • Design and build Go services that transform core banking data into a consistent model for downstream applications.
  • Partner with Profile and data engineers to define extraction points and build APIs or event streams.
  • Enforce data integrity, access boundaries, and schema versioning so core changes don't ripple to consumers.

Kunai builds full-stack technology solutions for banks, credit and payment networks, and their customers. The company has succeeded for over 20 years with a collaborative, creative, and continuous-learning culture.

US UK Canada Unlimited PTO 18w maternity 12w paternity

  • Own features end-to-end from design through implementation, rollout, and iteration.
  • Design, build, and evolve backend systems (Go, REST/gRPC APIs) for entitlement, policy, and customer onboarding services.
  • Provide technical leadership and mentorship to senior and mid-level engineers.

Chainguard delivers hardened, secure, and production-ready builds of open source software to help organizations build faster, stay compliant, and eliminate risk. It is venture-backed by leading investors and serves Fortune 500 enterprises and global industry leaders.

US Unlimited PTO

  • Design, build, and maintain robust backend services and APIs at scale.
  • Collaborate with stakeholders to architect and deliver new services from inception to completion.
  • Work with engineering and product teams to shape roadmaps and uphold high engineering standards.

Sardine is the leading agentic risk platform for fighting financial crime, providing real-time fraud prevention and AML automation. The company is remote-first and values performance over hours, with a culture of self-motivated, high-growth individuals.

Global Unlimited PTO

  • Design and build core platform components for correctness under failure and regulatory auditability.
  • Scale the platform to handle growing transaction volume while maintaining low latency and database health.
  • Mentor engineers and collaborate with cross-functional teams to turn compliance needs into production-grade software.

Notabene integrates crypto into the everyday economy by providing tools that reduce transaction risk and make crypto transfers safe. We work across three continents in eight countries, serving over 100 customers including financial institutions and exchanges, and are backed by investors like Y Combinator and Jump Capital.

Americas Europe

  • Own the architecture and technical roadmap for customer access to the Trading API, including identity, authorization, and account models.
  • Lead delivery of customer-facing trading applications with real-time market data and secure access systems.
  • Mentor engineers and set the standard for security, safe delivery, and production excellence.

Alpaca is a global leader in agent-first brokerage infrastructure, providing APIs for stocks, ETFs, options, crypto, and more. The company has 400+ employees globally and values curiosity, empathy, and accountability.

India

  • Design and build backend-heavy full stack features that turn HighLevel's core platform into purpose-built solutions for specific industries.
  • Own technical initiatives end-to-end, from API design and data modeling to testing, deployment, and maintenance using Node.js/NestJS and GCP services.
  • Collaborate with domain experts, mentor engineers, and leverage AI tools to build scalable, configurable industry solutions.

HighLevel is an AI-powered business operating system that helps agencies, entrepreneurs, and SMBs build, automate, and scale their operations. With over 2,000 team members across 10+ countries, HighLevel is a global remote-first organization that values initiative, clarity, and execution.

Europe

  • Make identity verification provider-agnostic, replacing tightly coupled solutions with a reusable service (mostly Ruby, some Go).
  • Improve KYC conversion by working across backend and web from started to submission.
  • Own web side of provider integrations: load SDKs, handle errors, and scale the React app.

We deliver Europe's leading finance workspace with banking at its core, augmented by financial tools. With 1,700 Qontoers serving over 750,000 customers across 8 European countries, we've been profitable since 2023 and foster a diverse, merit-based culture.

Mexico

  • Design plugin contracts: APIs, lifecycle, versioning and backward compatibility
  • Build scalable core platform services in Go and integrate with Kafka using idempotent processing
  • Implement failure detection, recovery and graceful degradation for multi-tenancy

Software Mind develops solutions that make an impact for companies around the globe. It builds cross-functional engineering teams and fosters a culture of openness, respect, grit, and enjoyment.

$75,600–$102,600/yr
European Union

  • Own accounting integration projects from problem definition through launch and iteration.
  • Build reliable, scalable backend services for accounting and financial workflows.
  • Partner with Product, Design, Operations, Compliance, and external providers on complex initiatives.

A fintech engineering team building and scaling financial products and backend platform capabilities. The culture values reliability, collaboration, and working through ambiguity in a fast-paced, high-growth environment.

LATAM Europe 3w PTO

  • Design, build, and maintain full-stack features across frontend applications and backend services.
  • Develop and maintain backend APIs for onboarding, authentication, transaction lifecycles, and operational workflows.
  • Build and enhance front-end experiences in customer-facing and internal web applications.

Veta Virtual is a talent company that hires for high-growth clients in the fintech and cryptocurrency industry. They foster a collaborative, high-trust culture and offer fully remote work opportunities.

India

  • Design, develop, and maintain scalable backend services and APIs for the Contacts domain.
  • Optimize system performance, reliability, and observability in a high-scale environment.
  • Collaborate cross-functionally with product, design, and engineering teams to deliver high-quality features.

HighLevel is an AI-powered business operating system that gives agencies, entrepreneurs and SMBs the infrastructure to build, automate and scale. With over 2,000 team members across 10+ countries, HighLevel operates as a global, remote-first organization built for speed and ownership.

Americas

  • Build and scale the systems and services powering Alpaca's global payments and treasury platform.
  • Design highly scalable, event-driven microservices using Go, Kubernetes, and cloud-native technologies.
  • Ensure system integrity and operational scalability while collaborating with a distributed engineering team.

Alpaca builds institutional-grade APIs for trading stocks, ETFs, options, crypto, and more. They are a 400+ person remote-first team valuing curiosity, empathy, and accountability.

Latin America Europe 3w PTO

  • Design, develop, and maintain full-stack features across backend services and frontend applications.
  • Build scalable microservices with Golang and Java, and modern frontends with React and Next.js.
  • Contribute to secure authentication, cloud infrastructure, and architecture decisions in a regulated fintech environment.

The company is a high-growth fintech and cryptocurrency platform that powers secure, scalable financial transactions. It offers a collaborative, high-trust remote working environment that values engineering ownership and technical judgment.