Fresh remote Backend Developer jobs in Spain

Explore latest remote Backend Developer opportunities from leading companies hiring in Spain. 33 jobs posted last 30 days.

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Fresh remote Backend Developer jobs in Spain (33)

Backend Engineer (.NET), Contract

1 day ago
Contract
Spain, Worldwide
Key requirements: 4 years of experience, .NET core (C#), Java or Python, Cloud-native applications, Upgrading legacy .NET Framework, CI/CD pipelines, Agile software development, Unit testing frameworks, Microsoft SQL Server, Entity Frameworks, Concurrency patterns
66degrees

66degrees is a global B2B consulting firm specializing in AI, data, and cloud solutions, helping businesses transform challenges into opportunities.

Remote policy: 66degrees embraces a flexible remote work policy, hiring from various regions globally to support its diverse delivery team.

Staff Software Engineer - Databases, Tempo | United Kingdom | Remote

1 day ago
Full-time
Spain, United Kingdom, Germany, Ireland, Sweden
£103,958 to £124,750 per year
Key requirements: Technical leadership, Deep systems experience, Strong Go, Operational mindset, Customer focus, Experience with tracing, Experience designing query languages, Experience operating multi-tenant SaaS infrastructure, Open-source contribution
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.

Staff Software Engineer - Databases, Tempo | Ireland | Remote

1 day ago
Full-time
Spain, United Kingdom, Germany, Ireland, Sweden
€117,600 to €141,120 per year
Key requirements: Technical leadership, Deep systems experience, Strong Go, Operational mindset, Customer focus, Leadership through writing
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 Software Engineer - Backend Platform

1 day ago
Full-time
Spain, Worldwide
$150,000 to $200,000 per year
Key requirements: 10 years of experience, Distributed systems, Go, Scalable backend architecture, Reliability and fault tolerance, Cloud-native environments (AWS, GCP), Databases (MySQL, Postgres, DynamoDB), Event-driven systems, Performance optimization
Customer.io

Customer.io is a Canada-based B2B SaaS platform specializing in customer engagement and marketing automation, designed for early and mid-stage companies.

Remote policy: Customer.io is a remote-first company that supports remote work, with hiring available for roles in various regions, including the Americas.

Staff Software Engineer - Databases, Tempo

2 days ago
Full-time
Spain, United Kingdom, Germany, Ireland, Sweden
€110,000 to €132,000 per year
Key requirements: Technical leadership, Deep systems experience, Go, Operational mindset, Customer focus, Open-source contribution, Experience with tracing, Experience designing query languages, Experience operating multi-tenant SaaS infrastructure, Experience building for AI/LLM consumers
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 Software Engineer, Backend

2 days ago
Full-time
Spain, Worldwide
Key requirements: 3 years of experience, .NET (C#), Scaling consumer-facing products, AI-powered development tools, Collaborative problem-solver, Inclusion and continuous learning
Tilt Finance

Tilt Finance is a San Francisco-based fintech B2C company offering innovative cash advances, credit cards, and personal finance tools for underserved consumers in the US.

Remote policy: Tilt Finance embraces a virtual-first approach, with team members collaborating across 14 countries and 12 time zones. The company is open to hiring from various regions, fostering a diverse and inclusive work environment.

Staff Backend Engineer - Submission Processing (Europe)

2 days ago
Full-time
Spain, Europe
$100,000 to $185,000 per year
Key requirements: 8 years of experience, LLM experience, AWS, Serverless technologies, Python, System design, Relational databases, Document processing, Experimentation, Proactive communication
Kalepa

Kalepa is a New York-based B2B AI software company revolutionizing the commercial insurance industry with its Copilot underwriting platform, serving insurers globally.

Remote policy: Kalepa supports remote work and hires from various regions, including the USA, Europe, and Latin America, with team members located globally. The company fosters a collaborative environment across time zones (UTC-3 to UTC-5).

Backend Engineer (Ruby), AI Engineering: Agent Observability

3 days ago
Full-time
Spain, Worldwide
Key requirements: Ruby on Rails, AI tooling, GraphQL, REST APIs, PostgreSQL, Async collaboration, Technical documentation
GitLab

GitLab is a San Francisco-based DevOps platform offering B2B and B2C solutions for software development, security, and collaboration, with a global presence.

Remote policy: GitLab is a fully remote company that hires globally, with team members located in over 65 countries. We embrace flexibility in scheduling to accommodate various time zones.

C developer for Linux Kernel team

3 days ago
Full-time
Spain, Worldwide
Key requirements: C programming, Kernel subsystem knowledge, Syscalls and kernel/user-space interfaces, Debugging with kprobes, ftrace, perf, gdb, Container isolation mechanisms, Open-source project experience, Knowledge of namespaces, cgroups, KVM, Python scripting for tooling, DevOps pipelines familiarity
Virtuozzo

Virtuozzo is a global B2B software company specializing in virtualization and cloud management solutions for service providers, offering a comprehensive portfolio of XaaS products.

Senior Java Developer

4 days ago
Full-time
Spain
€25,000 to €70,000 per year
Key requirements: Java, Spring / Spring Boot, Data platforms, Cloud platforms, Backend services, APIs, Object-oriented programming, Autonomous work, Complex organizational experience
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 Backend Engineer

4 days ago
Full-time
Spain
Key requirements: 5 years of experience, TypeScript, Node.js, Elixir/Phoenix, AI integrations, Third-party API integration, Queue-based systems, Operational reliability, Performance monitoring, Relational database optimization, Secure development practices
Vic.ai

Vic.ai is a New York-based B2B SaaS platform specializing in AI-driven accounts payable automation for finance teams, processing over 500 million invoices to enhance operational efficiency.

Senior Backend Engineer

4 days ago
Full-time
Spain, North America, Europe, Asia, Middle East
$125,000 to $145,000 per year
Key requirements: 7 years of experience, Java / Spring, Python / FastAPI / Django, C# / .NET, Node.js, RESTful APIs, Relational and/or NoSQL databases, Structured data formats, Concurrency and memory management, Electron-based desktop applications, DevSecOps tooling, Containerization and CI/CD
Agile Defense

Agile Defense is a Reston, VA-based B2B information technology company specializing in cybersecurity, data analytics, and digital transformation solutions for national security and civilian government sectors globally.

Remote policy: Agile Defense, Inc. supports hybrid work arrangements and hires remotely from various regions, including North America, Europe, Asia, and the Middle East, with team members located in diverse areas.

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.

Staff Backend Engineer - Alerting | Spain | Remote

5 days ago
Full-time
Spain
€94,000 to €113,000 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.

Senior Software Engineer, Mapping - Autonomous Vehicles

6 days ago
Full-time
Spain, Europe
Key requirements: 5 years of experience, C++, 3D computer vision, 3D geometry, multi-view geometry, structure from motion, SLAM, pose estimation, large-scale sensor data, map fusion, change detection, crowdsourced map construction
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

6 days ago
Full-time
Spain, Europe, Asia, United States
$100,000 to $150,000 per year
Key requirements: Java, Spring Framework, PostgreSQL, Microservices architecture, RESTful APIs, Agile SDLC, Git, Frontend technologies (HTML, CSS, JavaScript), AWS
FourKites, Inc.

FourKites, Inc. is a Chicago-based B2B SaaS provider specializing in AI-driven supply chain visibility and orchestration for global enterprises across various industries.

Remote policy: FourKites supports a hybrid work model, allowing employees to work remotely while also engaging in on-site activities. The company is open to hiring from various regions, including the US, Europe, and Asia, fostering a collaborative environment across time zones.

Senior .NET / Integration Developer

6 days ago
Full-time
Spain, Worldwide
$100,000 to $130,000 per year
Key requirements: 5 years of experience, .NET, C#, RESTful APIs, OpenAPI standards, Microservices architecture, Continuous integration pipelines, Database experience, Data mapping/reconciliation, Financial services experience, Legacy system deconversions, Fiserv, VeriPark
Aequilibrium Software Inc.

Aequilibrium Software Inc. is a Vancouver-based B2B technology consulting firm specializing in custom software solutions for FinTech and Immersive Learning, supporting digital transformation for businesses globally.

Remote policy: Aequilibrium Software Inc. is a fully remote organization, hiring globally with team members located around the world. Candidates outside of Canada will work as independent contractors.

C++ Software Engineer

11 days ago
Full-time
Spain
€30,000 to €50,000 per year
Key requirements: 2 years of experience, C++11/14/17, Software architecture, Object-oriented programming, Mobile programming, Agile experience, Version control (SVN, Git), Graphics engines, AI, Scripting languages (Lua, Python), POSIX systems, Code reviewing, Video game culture
Gameloft

Gameloft SE is a Paris-based B2C video game developer and publisher specializing in mobile, PC, and console games, targeting global consumers with popular titles like Asphalt and Disney Dreamlight Valley.

Senior Elixir Engineer

19 days ago
Full-time
Spain, Worldwide
Key requirements: 5 years of experience, Elixir, Phoenix framework, Distributed systems, Scalable backend services, PostgreSQL, Automated testing strategies, CI/CD pipelines, AWS cloud services, AI-powered products
Vic.ai

Vic.ai is a New York-based B2B SaaS platform specializing in AI-driven accounts payable automation for finance teams, processing over 500 million invoices to enhance operational efficiency.

Backend Engineer (EST timezone)

19 days ago
Full-time
Spain, North America, Europe
Key requirements: Highly scalable distributed systems, Event-driven architecture, Node.JS, Rust, Kafka, ClickHouse, PostgreSQL, Redis, S3, Multi-tenant SaaS, Data lifecycle management
PostHog

PostHog is a San Francisco-based B2B SaaS platform offering an integrated suite of tools for product engineers to build, test, and analyze software products, with a focus on the global market.

Remote policy: PostHog is a fully remote company with a globally distributed team, currently hiring in time zones between GMT-8 and GMT+2.

Java Developer

21 days ago
Contract
Spain, Worldwide
Key requirements: Java, Spring Boot, Microservices architecture, Clean code, AI-driven projects, Cloud platforms
CONFISA INTERNATIONAL GROUP

Confisa International Group is a Pembroke Pines, Florida-based professional services firm specializing in retained executive search and human resources solutions for B2B clients across multiple industries globally.

Remote policy: Confisa International Group supports remote work for certain roles, with current hiring focused on candidates located in the USA. The company has a global reach, operating across multiple continents including Europe, Africa, Asia, and the Americas.

Engineer – Collection

21 days ago
Full-time
Spain, Worldwide
Key requirements: Python, Generative AI familiarity, Debt recovery interest, Impact-oriented, Fast-paced environment adaptability, Fintech experience, Data analysis skills, AI/ML background
CloudWalk

CloudWalk is a fintech company headquartered in Brazil, specializing in AI-driven payment solutions and blockchain technology for the B2B market, with a growing presence in the U.S.

Remote policy: CloudWalk embraces a flexible work culture and hires remotely from various regions, supporting a diverse team across the globe.

Senior Backend Engineer

22 days ago
Full-time
Spain, Worldwide
$53,300 to $119,850 per year
Key requirements: Elixir, Phoenix, Postgres, CI/CD, Automation workflows, AI fluency, Functional Programming, AWS
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.

Senior Software Engineer (Backend): Ledger - Reporting

23 days ago
Full-time
Spain, Poland, South Africa, Bulgaria
€70,000 to €110,000 per year
Key requirements: 5 years of experience, Java, Kotlin, Spring Boot, Kafka, PostgreSQL, Financial data systems, Domain-driven design, Double-entry bookkeeping, Production ownership, CI/CD pipelines, Observability tooling
BVNK

BVNK is a UK-based fintech B2B platform specializing in stablecoin payment infrastructure, enabling businesses to send, receive, and convert currencies globally.

Remote policy: BVNK supports remote work and hires from various regions including the UK, Europe, USA, South Africa, and APAC, allowing for flexible work arrangements across time zones (UTC+0 to UTC+12).

Lead Backend Engineer - Piktochart

24 days ago
Full-time
Spain, South America, Europe
Key requirements: 7 years of experience, Ruby on Rails, TypeScript, AI tools and Agents, Cloud infrastructure, CI/CD workflows, Scalable system design, Backend design patterns, Application security, Database architecture, Mentoring developers
ThriveCart

ThriveCart is a leading B2B SaaS platform based in the creator economy, specializing in e-commerce solutions for digital entrepreneurs and coaches, with a unique one-time payment model.

Senior Backend Engineer (Elixir)

25 days ago
Full-time
Spain, Worldwide
$53,300 to $119,850 per year
Key requirements: Elixir, Phoenix, Postgres, CI/CD, AI fluency, Agentic workflows, Automation workflows, AWS
Remote - Referral Board

Remote Referral Board Inc. is a fully remote HR technology company providing a SaaS platform for employee referral programs tailored to distributed teams, targeting global businesses in need of efficient hiring solutions.

Remote policy: Remote is a remote-first company that hires globally, allowing team members to work from anywhere without requiring a physical office. We support collaboration across multiple time zones.

Senior Backend Engineer (Elixir)

25 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.

Senior Software Engineer C++ - Backend - Remote

26 days ago
Full-time
Spain, Worldwide
Key requirements: 10 years of experience, C++, Multi-tenant SaaS applications, Microservices architecture, Cloud-based design patterns, AWS (DynamoDB, S3, CloudFront), Docker, Kubernetes, Problem-solving skills, Analytical skills
Jitterbit

Jitterbit is a leading B2B iPaaS provider headquartered in an unspecified location, specializing in AI-powered enterprise automation and integration solutions for businesses worldwide.

Remote policy: Jitterbit is a flexible, remote-friendly company that supports remote work across various regions, allowing team members to collaborate effectively regardless of their location.

Backend Engineer (BE + LLM)

26 days ago
Full-time
Spain, Worldwide
Key requirements: LLM/AI application experience, LLM API integration, Prompt engineering, AI coding tools, Frontend framework (React, Vue, Angular), Backend language (Python, Go, Java, Node.js), Workflow automation, Strong ownership, Good communication skills
Binance

Binance is a global fintech B2C platform headquartered in Malta, operating the largest cryptocurrency exchange by trading volume, offering a wide range of digital asset products and services to users in over 180 countries.

Remote policy: Binance supports flexible remote work arrangements, with team members located in various regions globally, though specific policies may vary by team and role.

Senior Software Engineer (Kotlin/Java)

26 days ago
Full-time
Spain
Key requirements: Kotlin, Java, Spring Boot Reactive, AWS, Docker, Kubernetes, Kafka, Redis, Multi-threaded architectures, Web services, Caching, Customer-first mindset
Vonage

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

Remote policy: Vonage supports flexible remote work arrangements and hires from various regions, including the United States, Canada, and the United Kingdom, allowing team members to collaborate across time zones.