Remote Software Engineering and Development jobs open to Spain.

6 years of experience, AI infrastructure, Agentic coding workflows, Whole-lifecycle thinking, Technical leadership, Mobile domain expertise, Backend APIs, Security and privacy design, High agency, Collaborative resilience

ŌuraŌura Health Ltd is a Finnish health technology company headquartered in Oulu, specializing in the Oura Ring, a B2C smart wearable device that tracks health metrics for wellness and fitness, with a global market reach.

Swift

Swift, SwiftUI, A/B testing, Audio playback or streaming, Mobile infrastructure for build, test and release pipelines

ElevenLabsElevenLabs builds AI voice, conversational-agent, creative-media, and developer API products.

Kotlin

Kotlin, Jetpack Compose, A/B testing, App performance ownership, Audio playback on Android

ElevenLabsElevenLabs builds AI voice, conversational-agent, creative-media, and developer API products.

Python · Rust · Kubernetes

5 years of experience, EDR operation, Linux internals, macOS internals, Telemetry pipelines, SIEM at TB scale, Kubernetes, Python, Go, Rust, Zero-trust access, Identity-aware proxies, Digital forensics, LLM agents, Compliance as code, Web3 interest

Mysten LabsMysten Labs builds blockchain infrastructure, including Sui, for decentralized applications.

Rust · AWS · Kubernetes

Rust, Postgres compatibility, Deterministic Simulation Testing, Formal verification methods, Fuzz testing, Differential testing, AWS, Kubernetes, Embedded databases, Remote team collaboration, Cloud systems observability, Cloud systems reliability, Cloud systems performance

SupabaseSupabase is a Postgres development platform providing databases, authentication, storage, APIs and related developer tools.

5 years of experience, Cloud or SaaS experience, Managing remote engineering teams, Experience with developer tools, SQLite and Postgres ecosystems, Technical credibility in backend systems, Led team shipping developer-facing API, Building psychological safety, Performance management experience, Comfortable with ambiguity, Collaborative and adaptable

SupabaseSupabase is a Postgres development platform providing databases, authentication, storage, APIs and related developer tools.

React

Go, React, Data engineering, Data visualisation, Applied LLM/ML, Mentorship, Distributed team collaboration

CanonicalCanonical develops Ubuntu and open-source infrastructure software, with commercial support for organizations deploying it.

Rust

4 years of experience, C++, Rust, Memory safety, Multi-threaded architecture, Browser technology experience, Excellent communication skills

MozillaMozilla is a family of mission-driven organizations behind Firefox, Thunderbird, open-source AI tools and public-interest technology initiatives.

Python · SQL · GCP

What you'll need: 5+ years of experience as a software engineer; What you'll need: 3+ years of experience engineering with Python as your primary language; What you'll need: An academic background in STEM; What you'll need: Fluency in SQL and other OOPLs; What you'll need: Experience with API development and integration; What you'll need: A practical understanding of distributed systems; What you'll need: The ability to write concurrent code in IO/CPU bound situations; What you'll need: Experience with Docker, K8s, Ansible, Teamcity, monitoring, and alerting; Nice to have: Experience with prototyping and sketching; Nice to have: Multiple side projects or open source contributions; Nice to have: Exposure to GCP

RevolutRevolut provides app-based banking, payments, cards, investing and other financial services.

Senior BSS engineering and product leadership, telecom, CPaaS or SaaS, Amdocs, Oracle, Zuora or similar

VonageVonage is a Holmdel Township, NJ-based cloud communications provider specializing in unified communications and contact center solutions for B2B and B2C markets globally.

Rust

Distributed backend services, Realtime streaming systems, Rust or Go, Financial data experience, Debugging across service boundaries, AI-assisted development, Designing systems for data ingestion and processing

DuneDune is a remote-first B2B SaaS platform specializing in multi-chain crypto data analytics, empowering developers and investors with insights into blockchain ecosystems.

Python · GCP

5 years of experience, Python, Bash, Data pipelines, Large-scale data processing, Cloud infrastructure, GCP, Terraform, Web crawlers, Audio processing

SpeechifySpeechify is an AI-powered text-to-speech SaaS platform headquartered in the US, focusing on accessibility and productivity for a global audience.

Python · GCP

5 years of experience, Python, Bash, Data pipelines, Large-scale data processing, Cloud infrastructure, GCP, Terraform, Web crawlers, Audio processing

SpeechifySpeechify is an AI-powered text-to-speech SaaS platform headquartered in the US, focusing on accessibility and productivity for a global audience.

TypeScript · React · Go

5+ years full-stack, shipped dApps, viem/wagmi, smart wallets, Golang and TypeScript, React, English B2

XsollaXsolla is a Los Angeles-based B2B fintech company specializing in payment software and commerce solutions for the global video game industry.

TypeScript · Python · Kubernetes

Go, TypeScript, Python, Cloud-native security, Kubernetes, Automating security processes, ISO 27001, SOC 2, PCI DSS, NIST, GDPR, Interpersonal communication

Grafana LabsGrafana Labs builds Grafana Cloud and develops open-source observability projects including Grafana, Loki, Tempo, and Mimir.

TypeScript · Python · Kubernetes

Go, TypeScript, Python, Cloud-native security, Kubernetes, ISO 27001, SOC 2, PCI DSS, NIST, GDPR, Automating security processes, Interpersonal skills

Grafana LabsGrafana Labs builds Grafana Cloud and develops open-source observability projects including Grafana, Loki, Tempo, and Mimir.

Java · GCP

Leading data or backend engineers, large-scale data pipelines, CET/GMT hours; GCP, BigQuery, Scala or Java valued

SpotifySpotify is an audio streaming service that offers music, podcasts and audiobooks to listeners worldwide.

Salesforce

4+ years Salesforce development, Apex, Lightning Web Components, Platform Developer II cert, English and Spanish

NuvolarNuvolar is a Barcelona-based B2B digital innovation consulting firm specializing in cloud-based Salesforce applications and data engineering solutions for various industries, including healthcare and e-commerce.

Python · Kubernetes

8 years of experience, GPU cloud architecture, InfiniBand subnet management, RoCEv2 Ethernet designs, Data center network design, Kubernetes networking for AI, Multi-tenant isolation techniques, Linux networking expertise, Programming in Python or Go, Customer-facing solutions architect experience, Research and prototype emerging AI networking technologies

MirantisMirantis is a Campbell, California-based B2B company specializing in open source cloud computing and Kubernetes-native AI infrastructure, serving diverse sectors including automotive, healthcare, and financial services.

TypeScript · Python · Java

Open Source Contributions, Backend Development and API Design, Python, Java, C++, Go, Rust, TypeScript, Debugging and Troubleshooting, Automated Testing and Code Validation, Performance Optimization

Weekday AIWeekday provides AI-assisted candidate sourcing and recruiting services for employers.

TypeScript · JavaScript · React

Python, React, JavaScript, Java, Node.js, Rust, Golang, TypeScript, Cross-language development, End-to-end troubleshooting, Complex debugging, Code review and validation, Technical problem-solving

Weekday AIWeekday provides AI-assisted candidate sourcing and recruiting services for employers.

Python

Published Python library maintenance, strict typing, asyncio, Python packaging, open source maintainer work

SupabaseSupabase is a Postgres development platform providing databases, authentication, storage, APIs and related developer tools.

Python · Kotlin · AWS

2+ years software engineering, backend in Python or Kotlin, AWS, MySQL, Kubernetes, on-call rotation

AffirmAffirm operates a payment network that gives consumers flexible ways to pay and helps merchants grow.

TypeScript

Good-fit criteria (not every box required): 5+ years as a Software Engineer with TypeScript/Node across backend and frontend; shipped and operated agentic or LLM-based software in production; designed agent tools, context, prompts, state, streaming and loops with a framework/runtime; used evaluations, regression sets, tracing and user feedback; evaluates emerging agent techniques; contributes product direction through data and customer contact. Hands-on LLM development is strongly preferred; knowledge of the full stack is not required.

LedgyLedgy is a Switzerland-based fintech B2B company specializing in equity management software for international teams, with offices in Zurich and London.

Angular

Several years frontend, Angular 17+, RxJS and Signals, design systems, Playwright, EU or UK work authorization

Makersite GmbHMakersite builds AI-powered product lifecycle intelligence software that combines cost, environmental, compliance and risk data to help companies design more sustainable products.

JavaScript · Rust · AWS

3 years of experience, PostgreSQL Expert, Nix packaging, Ansible, Docker, AWS, Kubernetes, C/C++ builds, Go, JavaScript, Rust, Infrastructure management, Customer engagement, Proactive problem-solving

SupabaseSupabase is a Postgres development platform providing databases, authentication, storage, APIs and related developer tools.

7 years of experience, Advanced modern C++ (C++23 or newer), Large-scale C++ codebases, Memory management, Concurrency, Performance profiling, Experience shipping software to a large consumer audience, Comfort with large build systems, Algorithms and data structures

DuckDuckGoDuckDuckGo is a Paoli, Pennsylvania-based privacy technology company offering a privacy-focused search engine and browser solutions for a global audience.

Python · SQL

5+ years software/data/ML engineering, production LLM apps, semantic search, ranking metrics, Python and SQL

ParserParser provides software engineering and product-development teams for digital businesses.

Python · SQL · Azure

6+ years backend engineering, Python and REST APIs, SQL and NoSQL, CI/CD, Azure preferred

ParserParser provides software engineering and product-development teams for digital businesses.

Rust

3 years of experience, C/C++ proficiency, Security fundamentals, Debugging in multithreaded applications, Web technologies familiarity, Rust interest, Cross-platform application experience

MozillaMozilla is a family of mission-driven organizations behind Firefox, Thunderbird, open-source AI tools and public-interest technology initiatives.