Fresh remote Backend Developer jobs in Spain

Explore latest remote Backend Developer opportunities from leading companies hiring in Spain. 74 jobs posted last 30 days.

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Fresh remote Backend Developer jobs in Spain (74)

Backend Engineer (MTA), Core Sending

1 day ago
Full-time
Spain, Europe
$150,000 to $170,000 per year
Key requirements: SMTP, MTA systems, Email infrastructure, High-volume delivery systems, Typescript, Golang, Operational excellence, Distributed systems
Resend

Resend is a B2B SaaS platform headquartered remotely, specializing in modern email API services for developers, enabling scalable transactional email delivery globally.

Remote policy: Resend is a fully remote company with team members across various countries, primarily hiring from regions aligned with Brazilian and European Time Zones (UTC-3 to UTC+2).

Backend Engineer (Infra), Core Sending

1 day ago
Full-time
Spain, North America, South America, Europe
$150,000 to $170,000 per year
Key requirements: 8 years of experience, AWS, Typescript, Golang, Event-driven systems, Infrastructure as Code (IaC), High availability, Disaster recovery, Async pipelines, Monitoring tools (Datadog)
Resend

Resend is a B2B SaaS platform headquartered remotely, specializing in modern email API services for developers, enabling scalable transactional email delivery globally.

Remote policy: Resend is a fully remote company with team members across various countries, primarily hiring from regions aligned with Brazilian and European Time Zones (UTC-3 to UTC+2).

Senior Backend Engineer - Alerting | Spain | Remote

2 days ago
Full-time
Spain
€83,000 to €100,000 per year
Key requirements: Go, Distributed systems, Alerting systems, Cloud software development, Clean code, Self-driven project delivery, Remote collaboration, Mentorship
Grafana Labs

Grafana Labs is a San Francisco-based B2B observability platform specializing in open-source IT systems monitoring and data visualization for enterprises globally.

Remote policy: Grafana Labs supports remote work arrangements and hires from various regions, with some roles requiring specific location preferences such as the Netherlands. Team members collaborate across time zones, including CET.

Developer Technology Engineer, Energy

4 days ago
Full-time
Spain, Europe
Key requirements: 5 years of experience, CUDA, GPU optimization, C/C++, Python, HPC, Energy domain exposure, MPI, performance profiling, NVIDIA Nsight, multi-node performance tuning, seismic processing, reservoir simulation, power grid simulation
NVIDIA

NVIDIA Corporation is a Santa Clara-based technology company specializing in designing GPUs and AI solutions for gaming, professional visualization, and cloud services, operating in both B2B and B2C markets globally.

Remote policy: NVIDIA supports flexible remote work arrangements and hires from various regions globally, including the Americas, Europe, Asia, and the Middle East, with roles that may require collaboration across time zones.

Senior Software Engineer, Voice AI

4 days ago
Full-time
Spain, Worldwide
$120,000 to $160,000 per year
Key requirements: 5 years of experience, Voice AI pipelines, Production voice AI systems, Multi-agent orchestration, Telephony systems (Twilio), Real-time audio streaming, VAD tuning, ASR accuracy for medical terminology, TypeScript/Node.js, LLM APIs (OpenAI), Healthcare experience, High agency and autonomy
Natera

Natera is an Austin, Texas-based B2B biotechnology company specializing in non-invasive cell-free DNA testing for oncology, women's health, and organ health, serving healthcare providers globally.

Remote policy: Natera, Inc. supports remote work and hires for various positions, including remote roles, though specific hiring locations are not detailed. Team members may work from different regions, allowing for collaboration across time zones.

Software Engineer (Rust) - Backend

4 days ago
Full-time
Spain, North America, Europe
Key requirements: 4 years of experience, async Rust, backend systems in production, data-intensive systems, filtering, indexing, query execution, cloud deployment (AWS/GCP/Azure), Apache Arrow, Apache Datafusion, GPU workloads
Rerun

Rerun is a Stockholm-based B2B open source data platform specializing in Physical AI, providing an SDK for logging and visualizing multimodal data streams.

Remote policy: Rerun is a remote-first company headquartered in Stockholm, Sweden, with team members primarily in European and US-East Coast time zones. While hiring is focused on these regions, candidates from other locations may be considered on a case-by-case basis to ensure effective collaboration.

Software Engineer II, Backend (Repayment UX)

4 days ago
Full-time
Spain
€71,000 to €101,000 per year
Key requirements: 1.5 years of experience, APIs at scale using Python or Kotlin, Declarative UI frameworks like React or Vue, Ownership of growth and feedback, Debugging large code bases, Strong verbal and written communication
Affirm

Affirm is a U.S.-based fintech company offering a buy now, pay later (BNPL) service that allows consumers to make purchases in installments, primarily targeting the retail sector with both B2C and B2B business models.

Remote policy: Affirm is a remote-first company, allowing employees to work from various locations within their country of employment, including Poland, where the majority of roles can be remote.

Software Development Engineer - Intern

4 days ago
Part-time
Spain, Worldwide
$30 to $40 per hour
Key requirements: C#, TypeScript, React, Next.js, SQL databases, Object-oriented programming, HTML 5, CSS 3.0, JavaScript, Debugging, Performance optimization, Git, Kubernetes, Docker, REST, GraphQL, NoSQL databases
iHerb

iHerb is a global B2C online retailer based in Irvine, CA, specializing in health and wellness products, including vitamins, supplements, and sports nutrition, serving customers in over 180 countries.

Remote policy: iHerb supports remote work and hires globally, with team members located in various regions. Specific remote work conditions may vary by role.

Back End Engineer

4 days ago
Full-time
Spain, Worldwide
Key requirements: Ruby, Ruby on Rails, AWS, React, Python, Node.js, Excellent communication skills, Adaptability, Multitasking
Codekeeper

Codekeeper is a remote-first SaaS provider based in The Hague, specializing in software escrow solutions for B2B clients, including enterprises and government organizations.

Remote policy: Codekeeper is a remote-first company with a central office in The Hague, supporting a flexible work environment for team members across various regions.

Senior Java Developer

4 days ago
Full-time
Spain
€25,000 to €70,000 per year
Key requirements: Java, Spring / Spring Boot, Data platform experience, Backend services, Microservices architecture, Cloud platforms (AWS, Azure, GCP), Ability to work autonomously, Experience in healthcare environments
Nuvolar

Nuvolar 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.

Remote policy: Nuvolar offers flexible work options, allowing remote work primarily in Spain, with team members based in various locations including Barcelona and Mexico City. The company supports a global team and serves clients across all five continents.

Senior Java Engineer

6 days ago
Full-time
Spain, Worldwide
$0 to $5,000 per month
Key requirements: 5 years of experience, Java, Spring Boot, Spring WebFlux, Go, Apache Kafka, ClickHouse, Aerospike, GenAI, LangChain, LangGraph, N8N, React, TypeScript, Distributed systems, Performance tuning
Alex Staff Agency

Alex Staff Agency is an international IT recruitment B2B agency specializing in connecting top tech talent with companies in the IT and creative sectors, operating remotely without a fixed headquarters.

Remote policy: Alex Staff Agency embraces remote work and offers flexible collaboration options, including fully remote roles and hybrid models in locations such as London. Team members are supported across various regions.

高级软件工程师, JavaScript/TypeScript (Senior Software Engineer) (Remote)

8 days ago
Full-time
Spain, Worldwide
Key requirements: 3 years of experience, NodeJS, ReactJS, NestJS, ExpressJS, GraphQL, MongoDB, MySQL, Selenium, Cypress, Puppeteer, Styled-components, Problem-solving
BJAK

BJAK is a Malaysia-based insurtech B2C and B2B platform specializing in vehicle insurance, recognized as the largest insurance portal in Southeast Asia, serving the ASEAN market.

Remote policy: BJAK offers fully remote roles, allowing team members to work from anywhere, with a focus on creating an inclusive and flexible work environment.

Community Software Engineer

9 days ago
Full-time
Spain, Europe
Key requirements: JavaScript, TypeScript, Debugging, API knowledge, n8n familiarity, CLI tools, Clear communication, Detail orientation, Collaborative mindset
n8n

n8n is a Germany-based B2B SaaS workflow automation platform that integrates over 400 tools and services, targeting industries like IT and fintech with a focus on low-code and AI functionalities.

Remote policy: n8n is a remote-first company, allowing team members to work from anywhere within Europe, with regular off-sites to foster team bonding. We welcome applications from diverse locations across Europe.

Quantitative Engineer

9 days ago
Full-time
Spain, Worldwide
$140,000 to $155,000 per year
Key requirements: 6 years of experience, Structured finance, Client-facing APIs, AI-powered tooling, RESTful API design, MCP integration, Complex transaction modeling, Web application development, Detail-oriented, Proactive problem-solving
dv01

dv01 is a fintech company specializing in data analytics for structured finance, providing transparency and risk management tools to over 400 financial institutions globally.

Remote policy: dv01 operates in a remote-first environment, allowing team members to work from various locations, including their homes, cafes, or hotels. The company embraces flexibility in hiring, supporting candidates from diverse regions.

Senior Backend Engineer - Booking Platform

10 days ago
Full-time
Spain, Europe
Key requirements: 6 years of experience, PHP, Go, Decomposing monoliths, Designing APIs, High-traffic systems, AI coding tools, SaaS experience, Product-oriented engineering
Hostaway

Hostaway is a USA-based B2B SaaS provider specializing in vacation rental management software, serving property managers with 2-5,000+ properties globally.

Remote policy: Hostaway supports remote work and hires from various regions, including the EMEA area, while maintaining a global presence. Team members are located in multiple countries, allowing for collaboration across time zones.

Senior Python Engineer (Public API & FastAPI)

10 days ago
Full-time
Spain, United Kingdom, Germany, France, Ireland, Italy, Portugal
Key requirements: Public API experience, FastAPI, Backend systems in Python, API design ownership, Production debugging, High-performing team experience, Developer experience focus, Pragmatic and product-minded
PhotoRoom

PhotoRoom is a Paris-based AI photo editing app specializing in e-commerce and marketing solutions, operating as a B2B and B2C service with a global reach.

Remote policy: Photoroom is a remote-friendly company headquartered in Paris, allowing employees to work from anywhere in Europe within a 3-hour flight from Paris, with monthly office visits. While we support remote work, we currently sponsor visas only for individuals relocating to France or already based here.

Senior Backend Engineer (Elixir)

10 days ago
Full-time
Spain, Worldwide
$53,300 to $119,850 per year
Key requirements: Elixir, Phoenix, Postgres, Automation workflows, AI fluency, CI/CD (GitLab)
Remote

Remote is a global HR tech B2B SaaS platform headquartered remotely, specializing in payroll, compliance, and employment management for businesses hiring international teams.

Remote policy: Remote is a fully remote company with team members across six continents, hiring from various locations globally to support a diverse and asynchronous work culture.

Sr. Software Engineer (Backend)

11 days ago
Full-time
Spain, Worldwide
$120,000 to $160,000 per year
Key requirements: Kubernetes Mastery, Go, Open Source Contributions, Startup Experience, High Agency
vCluster Labs

vCluster Labs is a San Francisco-based B2B tech startup specializing in open-source SaaS for virtualizing Kubernetes clusters, targeting enterprises and platform teams globally.

Remote policy: vCluster Labs embraces a remote-first work culture, hiring from various locations around the globe to support a distributed team. Team members collaborate across time zones, ensuring flexibility and inclusivity.

Software Engineer II

11 days ago
Full-time
Spain, Worldwide
$114,500 to $188,000 per year
Key requirements: Scala, Bazel, CI systems, AI tools, Product-minded developer experience, Debugging build failures, Clear communication
Iterable

Iterable is a San Francisco-based B2B SaaS platform specializing in AI-driven cross-channel customer engagement solutions for brands worldwide.

Remote policy: Iterable embraces a flexible remote work culture, welcoming candidates from various regions worldwide, including those with remote employees across multiple countries. Team members collaborate across time zones to foster a diverse and inclusive workplace.

Staff Product Engineer, Backend (Go, Java)

11 days ago
Full-time
Spain, Europe
€70,000 to €120,000 per year
Key requirements: Billing systems experience, Go architectural expertise, Distributed backend systems, AI and agentic coding tools, Data accuracy focus, Product mindset for internal tools, Mentorship and cultural leadership, Observability expertise
Dash0

Dash0 is an OpenTelemetry-native SaaS observability platform for developers and SRE teams, focusing on monitoring distributed systems in cloud-native environments, primarily targeting the B2B market in North America.

Staff Product Engineer, Backend (Go, ClickHouse)

11 days ago
Full-time
Spain, Europe
Key requirements: Go, ClickHouse, Distributed backend systems, Data pipelines, Observability passion, Startup adaptability
Dash0

Dash0 is an OpenTelemetry-native SaaS observability platform for developers and SRE teams, focusing on monitoring distributed systems in cloud-native environments, primarily targeting the B2B market in North America.

Backend Engineer - Platform - Stacks | UK | Remote

11 days ago
Full-time
Spain, United Kingdom, Germany, Ireland, Sweden
£72,000 to £90,000 per year
Key requirements: 1 years of experience, Golang, SaaS experience, Distributed systems concepts, Kubernetes, Infrastructure-as-code tooling, Incident response experience, Stateful systems, Reconciliation loops, AI-assisted development practices
Grafana Labs

Grafana Labs is a San Francisco-based B2B observability platform specializing in open-source IT systems monitoring and data visualization for enterprises globally.

Remote policy: Grafana Labs supports remote work arrangements and hires from various regions, with some roles requiring specific location preferences such as the Netherlands. Team members collaborate across time zones, including CET.

Senior Backend Engineer - Grafana Search & Storage | UK | Remote

11 days ago
Full-time
Spain, United Kingdom, Germany, Ireland, Sweden
£91,000 to £114,000 per year
Key requirements: Go, Large distributed systems, Cloud software development, Project delivery from ideation to shipping, Open-source contribution, Kubernetes-inspired Operator pattern, On-call experience, Infrastructure as code
Grafana Labs

Grafana Labs is a San Francisco-based B2B observability platform specializing in open-source IT systems monitoring and data visualization for enterprises globally.

Remote policy: Grafana Labs supports remote work arrangements and hires from various regions, with some roles requiring specific location preferences such as the Netherlands. Team members collaborate across time zones, including CET.

Senior Backend Engineer - Grafana Search & Storage | Ireland | Remote

11 days ago
Full-time
Spain, United Kingdom, Germany, Ireland, Sweden
€104,000 to €130,000 per year
Key requirements: Go, Large distributed systems, Cloud software development, Project delivery from ideation to shipping, Clean and maintainable code, Kubernetes-inspired Operator pattern, On-call experience, Infrastructure as code
Grafana Labs

Grafana Labs is a San Francisco-based B2B observability platform specializing in open-source IT systems monitoring and data visualization for enterprises globally.

Remote policy: Grafana Labs supports remote work arrangements and hires from various regions, with some roles requiring specific location preferences such as the Netherlands. Team members collaborate across time zones, including CET.

Oracle RMS Development Expert ( REMOTE)

12 days ago
Full-time
Spain, Worldwide
Key requirements: 3 years of experience, Oracle Retail Merchandising System (RMS), Hands-on development in complex system implementations, 2 full project implementation cycles, System analysis and technical design, Oracle Database and/or MSSQL, Agile methodology, Problem-solving and communication skills in English
ADV TECHMINDS

Adv Techminds is a Karimnagar-based IT consulting firm specializing in SAP solutions, operating in the global B2B market.

Junior Applied Forward Deployed Engineer (FDE)

12 days ago
Full-time
Spain, Worldwide
Key requirements: 3 years of experience, Python, SQL, REST APIs, Field-facing engineering experience, AI fluency, Strong communication skills
Monte Carlo

Monte Carlo is a San Francisco-based B2B SaaS company specializing in data observability, helping enterprises ensure reliable data and AI solutions.

Software Engineer - Backend & Data

12 days ago
Full-time
Spain, Europe
€60,000 to €80,000 per year
Key requirements: 3 years of experience, Python, Pandas, SQL, ETL pipelines, Data analysis, Cloud environments, Business intelligence tools, Problem-solving, Self-starter mindset
MLabs

MLabs is a remote fintech company specializing in DeFi solutions, providing a unified API for financial institutions to access on-chain liquidity across major blockchains.

Remote policy: MLabs supports remote work for positions located within the EMEA region, allowing for flexible hours and a remote-first environment.

GPU Consultant Engineer

12 days ago
Full-time
Spain, Worldwide
Key requirements: Vulkan, GPU hardware concepts, Linux kernel basics, DRM fundamentals, Mesa architecture awareness, C, C++
Collabora

Collabora Ltd is a Cambridge-based B2B company specializing in open-source consultancy, training, and product development, particularly for the LibreOffice suite, with a global reach.

Remote policy: Collabora supports flexible remote work and hires globally from various regions, with team members working from home at any time. There are no specific restrictions on hiring locations.

AI Full Stack Developer

12 days ago
Full-time
Spain
$70,000 to $120,000 per year
Key requirements: Next.js, NestJS, TypeScript, AI agents, PostgreSQL, Prisma, RESTful APIs, third-party SDKs, feature flags, collaboration with AI product managers, cloud infrastructure
leadtech

Leadtech is a Barcelona-based B2B online innovation technology company specializing in creating and managing digital products and services for the global online business community.

Remote policy: Leadtech offers a flexible work environment, allowing employees to choose between working fully remote or from our Barcelona office, where we foster creativity and collaboration.

Backend Engineer - Platform - Stacks | Spain | Remote

12 days ago
Full-time
Spain
€65,000 to €81,000 per year
Key requirements: 1 years of experience, Golang, SaaS platform experience, Distributed systems concepts, Kubernetes in AWS/GCP/Azure, Infrastructure-as-code tooling, Incident response experience, Stateful systems expertise, Reconciliation loops knowledge
Grafana Labs

Grafana Labs is a San Francisco-based B2B observability platform specializing in open-source IT systems monitoring and data visualization for enterprises globally.

Remote policy: Grafana Labs supports remote work arrangements and hires from various regions, with some roles requiring specific location preferences such as the Netherlands. Team members collaborate across time zones, including CET.