Backend Engineer

hace 2 semanas

Barcelona, Barcelona, España Web3 Insights: Talent A tiempo completo

Web3 Insights is proud to represent a well-funded fast-growing company redefining how developers build secure, seamless, and scalable wallet infrastructure. Their platform provides open-source, programmable, and gasless wallet infrastructure that lets developers focus on building great products instead of managing complex crypto tooling.

We're hiring a
Backend Engineer
- someone who'll own the backend systems that power our crypto and self‑custody platform. You'll bring deep expertise in Go, and TypeScript.

What you'll do

  • Design, implement, and operate scalable, resilient backend services handling millions of API requests per month.

  • Author high‑performance microservices in
    Go and TypeScript
    , ensuring clean, maintainable code and robust test coverage.

  • Architect messaging workflows using RabbitMQ (or similar), optimizing for throughput, latency, and fault tolerance.

  • Manage and evolve our cloud infrastructure on GCP - VMs, Kubernetes clusters, CI/CD pipelines, networking, and monitoring.

  • Drive technical decisions: from database schema design to distributed cache strategies and sharding approaches.

Your profile

  • 3+ years of backend experience building production systems in
    Go
    and
    TypeScript
    .

  • Hands‑on expertise with GCP services (Compute Engine, GKE, Pub/Sub, Cloud SQL/Spanner, IAM).

  • Proven track record designing message‑driven architectures with RabbitMQ, Kafka, or similar.

  • Strong knowledge of Kubernetes: deploying, scaling, and troubleshooting at scale.

  • Solid understanding of distributed systems principles: consensus, leader election, partition tolerance.

  • Familiarity with cryptographic concepts (key management, signatures, encryption) and a curiosity to dig deeper.

Nice to haves

  • Background in Rust, or systems programming.

  • Experience with Infrastructure as Code (Terraform, Cloud Deployment Manager).

  • Open‑source contributions or side projects showcasing your distributed systems chops.

  • Familiarity with observability tools (Prometheus, Grafana, OpenTelemetry).

Benefits

  • Generous pay & remote-first culture:
    Work with a high-impact, globally distributed team building next-generation wallet infrastructure from anywhere in Europe.

  • High-ownership engineering team:
    Ship code that powers millions of wallets and transactions, with autonomy and real influence on architecture and product decisions.

  • Learning and growth mindset:
    Collaborate with experts in distributed systems, cryptography, and cloud infrastructure - grow your skills through open-source and real-world scale challenges.

Web3 Insights and our client are proud to be an
equal opportunity employer
. We celebrate diversity and are committed to creating an inclusive environment for all team members. All qualified applicants will receive consideration for employment without regard to race, color, religion, gender, gender identity, sexual orientation, age, disability, or any other protected status.

  • Backend Engineer

    hace 2 semanas

    Barcelona, Barcelona, España Aubay Spain A tiempo completo

    Backend Engineer )Ubicación:Puesto híbrido en Barcelona (cerca Metro Bogatell) (3-4 días en remoto, 1-2 días presenciales a la semana)Estamos buscando unBackend Engineer con experiencia en que se una a nuestroCRM API Team. Tendrás la oportunidad de trabajar en un entorno dinámico, colaborando estrechamente con elProduct Owner de CRM, un desarrollador...

  • Senior Backend Engineer

    hace 5 días

    Barcelona, Barcelona, España Insight International (UK) Ltd A tiempo completo

    Role: Senior Backend Engineer (.Net)Location: Barcelona, SpainJob Type: ContractRole Summary:The Senior Backend Engineer will play a critical role in building the core services and APIs for the project. Working closely with the Lead Backend Engineer, this role will be responsible for writing high-quality code, developing robust data solutions, and...

  • Senior Backend/Devops Engineer

    hace 7 días

    Barcelona, Barcelona, España Startup Talents A tiempo completo

    The employer offers crypto accounts for players in the gaming industry acting as a wallet -as -a -service solution supporting multi -chain accounts, gas sponsorship, pop -upless blockchain interactions, and flexible ownership. Theis solution enables games to interact with on -chain assets easily and programmably, allowing for faster launches, adaptability...

  • 3 Senior Backend Engineer

    hace 2 semanas

    Barcelona, Barcelona, España Talent-R A tiempo completo

    Senior Backend Engineer (Python/Django) | Competitive Salary | Hybrid (Barcelona) Location: Barcelona (Sant Cugat del Vallès – Hybrid) Seniority: Senior Position: SENIOR BACKEND ENGINEERAbout the jobWe are hiring for an AI-first SaaS platform that leverages a network of autonomous intelligent agents to fully automate digital marketing operations for...

  • Sr Backend Engineer

    hace 2 días

    Barcelona, Barcelona, España Antai Ventures A tiempo completo

    About UsWe're a newly funded B2C FinTech startup on a mission todemocratize private banking. Our platform combinesAI-driven intelligencewith the expertise of human financial advisors to deliverholistic, personalized wealth management advisory— making high-quality financial advice accessible to a wider audience than ever before.Backed by leading investors...

  • Sr Backend Engineer

    hace 7 días

    Barcelona, Barcelona, España Antai Ventures A tiempo completo

    About UsWe're a newly funded B2C FinTech startup on a mission to democratize private banking. Our platform combines AI-driven intelligence with the expertise of human financial advisors to deliver holistic, personalized wealth management advisory — making high-quality financial advice accessible to a wider audience than ever before.Backed by leading...

  • Backend Engineer

    hace 1 semana

    Barcelona, Barcelona, España Fourthline A tiempo completo

    At Fourthline, our mission is to fight financial crime. We help protect the global financial system by verifying millions of identities for banks, neobanks, online brokers, crypto exchanges, or insurers like N26, Trade Republic, flatexDEGIRO, Nationale Nederlanden, Qonto, Shine, Solarisbank, and more.Having started our journey in January 2018 only, we're...

  • Backend Engineer, Ui Services

    hace 1 semana

    Barcelona, Barcelona, España Stripe A tiempo completo

    Backend Engineer, UI ServicesWho we areAbout StripeStripe is a financial infrastructure platform for businesses. Millions of companies—from the world's largest enterprises to the most ambitious startups—use Stripe to accept payments, grow their revenue, and accelerate new business opportunities. Our mission is to increase the GDP of the internet, and we...

  • Backend Engineer

    hace 5 días

    Barcelona, Barcelona, España tuotempo A tiempo completo

    Company DescriptionWe transform healthcare experiences through intelligent digital solutions.Tuotempo is the trusted patient engagement platform powering some of Europe and Latin America's leading healthcare institutions. Our innovative CRM system liberates medical professionals from administrative burdens so they can focus on their true passion: delivering...

  • Backend Engineer

    hace 5 días

    Barcelona, Barcelona, España Docplanner A tiempo completo

    Company Description We transform healthcare experiences through intelligent digital solutions.Tuotempo is the trusted patient engagement platform powering some of Europe and Latin America's leading healthcare institutions. Our innovative CRM system liberates medical professionals from administrative burdens so they can focus on their true passion: delivering...