Fresh remote Software Engineering and Development jobs in Spain

Key requirements: Network Mastery, Solution Architecture, Analytical Rigor, Strategic Advisory, Technical Integration

Inflect

Inflect is a San Francisco-based B2B SaaS platform revolutionizing digital infrastructure procurement, including data centers and cloud services, for businesses globally.

Remote policy: Inflect offers a fully remote work environment, hiring from various locations to support a diverse team.

Staff Software Engineer, Full Stack

$120,000 to $160,000 per year

Key requirements: 10 years of experience, Golang, BigQuery, Data warehousing, API design, React, TypeScript, Critical thinking, Customer interaction, Project execution

Ternary

Ternary is a multi-cloud FinOps platform provider focused on optimizing cloud costs for enterprises and MSPs, operating in the B2B sector.

Remote policy: Ternary is a remote-first company, hiring from various locations and supporting team members across different time zones.

MySQL Database Engineer

Key requirements: 3 years of experience, Galera Cluster, Percona Cluster, MySQL, MariaDB, Database security, Backup and recovery, Performance tuning, Scripting (Bash, Python, Perl), UNIX-like OS, FinTech experience, PCI DSS/PCI 3DS knowledge

Entersekt

Entersekt is a Stellenbosch-based fintech B2B SaaS provider specializing in mobile authentication, app security, and fraud prevention for financial institutions globally.

Principal Backend / Platform Engineer (Cybersecurity)

Key requirements: Distributed backend systems design, Microsoft Azure, PostgreSQL, Redis, Data pipelines, Real-time processing systems, Security and privacy in system design, End-to-end architecture ownership, Cybersecurity product experience, Multi-tenant SaaS platform design, Streaming systems exposure

Spain, Europe

Janea Systems

Janea Systems is a Seattle-based B2B consultancy specializing in expert software engineering solutions, focusing on AI and cloud technologies for enterprise clients globally.

Remote policy: Janea Systems supports remote work and is currently hiring for various roles, primarily focusing on candidates located in Europe.

Client Engine Software Engineer

Key requirements: 10 years of experience, C++, Design and implement complex client-side engines, Advanced algorithms (tree/graph traversal, heuristics), Concurrency and memory management, Rust exposure or willingness to learn, Declarative rule languages or query engines experience, AI-assisted tooling experience, Secure local storage solutions, Cross-platform client development

Spain, Europe

Janea Systems

Janea Systems is a Seattle-based B2B consultancy specializing in expert software engineering solutions, focusing on AI and cloud technologies for enterprise clients globally.

Remote policy: Janea Systems supports remote work and is currently hiring for various roles, primarily focusing on candidates located in Europe.

Senior Software Enginer (C# / .NET)

Key requirements: 5 years of experience, C#, ASP.NET Core, Web APIs, Microservices, OAuth, JWT, Azure AD, Secure coding practices, API integrations, Logging frameworks, CI/CD pipelines

Tech Holding

Tech Holding is a Los Angeles-based B2B consulting firm specializing in professional services and managed solutions for cloud transformation and technology integration across various industries.

Remote policy: Tech Holding supports remote work opportunities and hires from various regions globally, allowing flexibility for team members to work from different locations.

Senior Backend Engineer - Workforce Verification

Key requirements: 6 years of experience, Golang, Microservices architecture, RESTful APIs, High-throughput storage, Cloud computing, NoSQL databases, Big data analytics, Machine learning services, Concurrency, Multi-threading

Socure

Socure is a U.S.-based B2B SaaS provider specializing in AI-driven identity verification and fraud prevention solutions for enterprises across financial services, e-commerce, and government sectors.

Remote policy: Socure is a fully remote organization, supporting team members across various locations, with some roles requiring in-person engagement in specific regions such as Washington, D.C.

Engineering Intern- AI Agents, Data & RiskOS

Key requirements: AI/ML systems, Data engineering, Distributed systems, Go, React, Cloud environments, CI/CD

Socure

Socure is a U.S.-based B2B SaaS provider specializing in AI-driven identity verification and fraud prevention solutions for enterprises across financial services, e-commerce, and government sectors.

Remote policy: Socure is a fully remote organization, supporting team members across various locations, with some roles requiring in-person engagement in specific regions such as Washington, D.C.

Manager of Solutions Engineering

Key requirements: Leadership experience, Solutions engineering expertise, Customer lifecycle management, Data-driven decision making, Coaching and development, Cross-functional collaboration, Simplifying complexity

Paddle

Paddle is a global B2B SaaS provider headquartered in an unspecified location, specializing in payment infrastructure and serving over 6,000 software companies worldwide.

Remote policy: Paddle is a digital-first company that supports remote work and has a diverse team across various regions, allowing employees to work from anywhere or from stylish hubs.

Senior Android Engineer, Connectivity

Spain, Europe, United States

$172,000 to $203,000 per year

Key requirements: Bluetooth expertise, Android Bluetooth APIs, Kotlin mastery, Complex systems understanding, User interface and application engine knowledge, Technical leadership, Problem-solving with cross-domain teams, RxJava, Coroutines and Flow, Jetpack Compose

Ōura

Ōura 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.

Software Development Engineer in Test

Key requirements: 2 years of experience, CI/CD systems, Test automation, C++/C#, GD Script, Python, Shift-left quality practices, Performance testing, Internal tools development, API quality, Collaboration and communication skills, Data-driven quality initiatives

Onebrief

Onebrief is a Honolulu-based B2G SaaS platform specializing in AI-powered workflow software for military planning and command operations, targeting defense organizations globally.

Remote policy: Onebrief operates as an all-remote company, hiring from various regions, with team members collaborating globally, including at military commands.

Senior Customer Engineer

Key requirements: 6 years of experience, Java, Integration engineering, AI workflows, Data structures, Algorithms, Enterprise integration patterns, LLM usage, SQL proficiency, Customer discovery, Problem-solving, Technical mentoring

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 Software Engineer

Key requirements: 6 years of experience, Go, Distributed systems, Web3 experience, High-throughput API platforms, Problem-solving, Autonomous operation, Collaboration across teams

QuickNode

QuickNode is a Miami-based B2B blockchain infrastructure platform providing RPC APIs and development tools for the Web3 ecosystem, enabling developers to build decentralized applications globally.

Remote policy: QuickNode is a global remote company, hiring from various locations around the world, with team members collaborating across time zones.

Senior Engineering Manager, Integrations & APIs

$210,000 to $260,000 per year

Spain, Portugal

Key requirements: API platform leadership, Integrations platform experience, SaaS or cloud-scale environment, Backend engineering expertise, Object-oriented programming (Python preferred), ETL pipelines and data flow orchestration, Cloud infrastructure knowledge (AWS, Azure, GCP), Security best practices in multi-tenant environments, Linux-based systems familiarity

Horizon3 AI

Horizon3.ai is a remote cybersecurity company specializing in the NodeZero autonomous pentesting SaaS platform, serving global enterprises and federal agencies in the B2B sector.

Remote policy: Horizon3.ai is a fully remote company, hiring from various locations including Spain and Portugal, with team members collaborating across different time zones.

DevOps Engineer

Spain, Europe, United States

Key requirements: 5 years of experience, Python, Bazel, Kubernetes, Network protocols, Distributed system design, Linux, Robotics experience, Cross-functional leadership, Communication skills

Ekumen

Ekumen is an Argentina-based B2B engineering company specializing in remote software development for robotics, AR/VR, and AI, serving clients globally.

Remote policy: Ekumen embraces a remote-first approach, hiring engineering talent from various regions including Latin America, the USA, and Europe, with a focus on compatibility across time zones.

Engineering Manager, Engine Team

Key requirements: Team management, Technical strategy, Machine learning inference at scale, Hybrid cloud models, Software architecture, Startup experience, AI integration, Engineering culture promotion

Deepgram

Deepgram is a San Francisco-based B2B SaaS provider specializing in Voice AI solutions, offering speech-to-text and text-to-speech APIs for developers and enterprises in various sectors.

Member of Engineering (Evaluations / Engineering)

Key requirements: Python framework design, Distributed systems, Data pipelines, Event-driven architectures, Cloud services (GCP, AWS, Azure), Monitoring tools (Grafana, Prometheus, Datadog), Developer tooling design, ML ops experience, Data visualization platforms

poolside

Poolside AI is a Paris-based B2B SaaS company specializing in enterprise AI solutions for software development, targeting businesses globally.

Remote policy: Poolside operates as a remote-first company, hiring team members primarily from Europe and North America, with flexible work arrangements and regular in-person gatherings.

Member of Engineering (Evaluations)

Key requirements: Experience with Large Language Models (LLM), Strong understanding of LLM limitations, Strong engineering background, Strong programming skills, Linux, Strong algorithmic skills, Python, Critical thinking

poolside

Poolside AI is a Paris-based B2B SaaS company specializing in enterprise AI solutions for software development, targeting businesses globally.

Remote policy: Poolside operates as a remote-first company, hiring team members primarily from Europe and North America, with flexible work arrangements and regular in-person gatherings.

Member of Engineering (Console, Full-Stack)

Key requirements: AI agents, Backend engineering, Go, Kubernetes, Cloud environments, Full-stack development, Collaboration

poolside

Poolside AI is a Paris-based B2B SaaS company specializing in enterprise AI solutions for software development, targeting businesses globally.

Remote policy: Poolside operates as a remote-first company, hiring team members primarily from Europe and North America, with flexible work arrangements and regular in-person gatherings.

Senior Frontend Engineer

$53,300 to $119,850 per year

Key requirements: Javascript ES6, React, Jest, React Testing Library, API design, Scalability and performance focus, Leading large front-end applications, Attention to detail, Self-guided work, Curiosity and willingness to learn, Remote work experience (considered a plus)

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.

Engineering Team Leader

$75,450 to $169,700 per year

Key requirements: React, Elixir, Agentic workflows, Team management, Systems thinking, Diversity and inclusion commitment, Coaching and mentoring, Feedback delivery

Remote - Referral Board

Engineering Manager (AI) - Supernal

Key requirements: 7 years of experience, AI delivery patterns, Production systems management, Integrations expertise, Reliability in automation, Quality mindset, People management, Concurrent workstreams management, Technical escalation, Hiring and onboarding, Clear communication

Infinity

Infinity is a no-code work management SaaS platform that specializes in project management and team collaboration, operating in the B2B sector.

Remote policy: Labrynth operates on a remote-first model, supporting fully remote work with flexible hours. The team collaborates primarily across Americas time zones and includes members from various regions globally.

Senior Software Engineer (Ruby on Rails) (Full Remote - Worldwide)

Contract

Key requirements: 5 years of experience, Ruby, Ruby on Rails, PostgreSQL, Redis, Hotwire, Tailwind CSS, Tech scale-up experience, Large-scale product experience, Strong communication skills, Ownership mindset, User-centricity, Comfort with uncensored content

EverAI

EverAI is a leading AI companionship platform based in a remote-first environment, offering Candy.AI, the world's largest AI girlfriend/boyfriend app, targeting a global B2C market with over 40 million users.

Remote policy: EverAI is a fully remote company, allowing team members to work from anywhere. We embrace a flexible hiring approach, welcoming applicants from various regions.

Senior Frontend Engineer

$53,300 to $119,850 per year

Key requirements: React, Javascript ES6, Jest, React Testing Library, Experience with large front-end applications, API design, Attention to detail, Ability to work independently, Curiosity and willingness to learn

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 Backend Engineer (Elixir)

$53,300 to $119,850 per year

Key requirements: Elixir, Phoenix, Postgres, CI/CD, Automation workflows, Systems thinking, Agentic workflows

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 Blockchain Engineer

Key requirements: 2 years of experience, Rust, Blockchain cryptography, Efficient and safe code, Automated testing, Continuous integration, Account Abstraction, EIP Specs understanding, On-chain software development

Trust Wallet

Trust Wallet is a leading B2C multi-chain, non-custodial cryptocurrency wallet enabling users to manage over 10 million digital assets, headquartered remotely with a global user base.

Remote policy: Trust Wallet operates as a fully remote company, hiring globally with team members working from various countries. Candidates must have the right to work in their respective locations.

Software Engineer (Go) - Auth Product

Key requirements: 5 years of experience, Go, TypeScript, Authentication systems, OAuth, OIDC, SAML, Postgres, Next.js, Technical writing

Supabase

Supabase is an open-source BaaS platform headquartered remotely, specializing in Postgres database solutions for developers in the software development industry, targeting both B2C and B2B markets.

Remote policy: Supabase is a fully remote company that hires globally, allowing team members to work from anywhere in the world. We support a distributed workforce with no physical offices.

Software Engineer (Go) - Auth