CrawlJobs Logo
Maisa Logo Maisa · IT - Software Development

Sr Backend Engineer

Spain, Valencia · Job Posted December 10, 2025
Apply Position
Job Link Share

Job Description

We're seeking a Senior Backend Engineer to join our core engineering team and play a pivotal role in building and scaling our AI-driven Knowledge Processing Unit (KPU). You'll work on cutting-edge distributed systems that power enterprise AI applications, contributing to a platform that enables reliable AI agents with deterministic outcomes.

Job Responsibility

  • Develop and maintain scalable APIs and backend services using Go (primary) or Python
  • Build and optimize event-driven architectures handling real-time data processing
  • Work with Apache Kafka as our communication backbone between microservices
  • Design and optimize database queries across MySQL or Postgres
  • Ensure scalability, performance, and security of backend services in containerized environments
  • Contribute to our Docker containerized and Kubernetes orchestrated microservices ecosystem
  • Implement GRPC, HTTP, and WebSocket communication protocols
  • Build resilient systems with proper error handling and monitoring
  • Collaborate with AI teams to integrate LLM capabilities and AI reasoning engines
  • Work with CI/CD pipelines and Git version control
  • Implement monitoring and logging using tools like Prometheus, Grafana, and Sentry
  • Optimize performance for high-concurrency environments
  • Ensure proper resource management and auto-scaling

Requirements

  • 5+ years of backend development experience
  • Strong experience with Go (preferred) or Python (and willingness to learn Go)
  • Experience with event-driven architectures and message brokers (Kafka, RabbitMQ, EventBridge)
  • Solid understanding of RESTful APIs and GraphQL
  • Experience with MySQL or Postgres databases and data consistency patterns
  • Knowledge of Docker and Kubernetes for container orchestration
  • Experience with microservices architecture and distributed systems
  • Proficiency in CI/CD pipelines and Git

Nice to have

  • Experience with AWS services (EventBridge, S3, DocumentDB)
  • Knowledge of Python for AI/ML integrations
  • Experience with GRPC and WebSocket protocols
  • Familiarity with monitoring tools (Prometheus, Grafana, Sentry)
  • Understanding of AI/ML concepts and enterprise software patterns
  • Experience with Redis for caching and temporary storage

What we offer

  • Opportunity to shape the future of accountable enterprise AI agents
  • Competitive compensation package
  • Flat organization focused on impact rather than hierarchy
  • Work with cutting-edge computational AI technology
  • Dynamic, experienced team of technical experts
  • Continuous learning in the rapidly evolving field of Agentic AI
Maisa - All Job Offers

Looking for more opportunities?

Search for other job offers that match your skills and interests.

Suggested Tags: Frontend Developer Secretary Talent Manager Salesforce Administrator Data Analyst
Similar Jobs for

Sr Backend Engineer

8 matching positions

Sr Backend Engineer

Canals is AI for distributors. AI-powered sales order entry that automatically t...
Location
Location
Argentina
Salary
Salary:
90000.00 - 150000.00 USD / Year
silver.dev Logo
Silver.dev
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Sense of Urgency
  • Great Technical Talent
  • Good judgement
  • Work Ethic/Motivation
  • Ability to get a lot done well
  • Experience with Typescript, Node, Python (for ML), Postgres, Elastic Search, Docker, AWS, Sveltekit, Tailwind is part of the tech stack
What we offer
What we offer
  • Offers Equity
  • Profitable company
  • No accumulating tech debt, no bureaucracy
  • Few meetings (just 2.5hs per week per engineer)
  • Fully remote
  • Fulltime
Read More
Arrow Right

Sr. Backend Engineer - Xumo

We are seeking an experienced Senior Backend Engineer to lead the design, develo...
Location
Location
United States , Irvine; Philadelphia
Salary
Salary:
141860.82 - 189147.75 USD / Year
comcastadvertising.com Logo
Comcast Advertising
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • 5+ years’ experience of building backend servers (Java)
  • 5+ years’ experience of building web service APIs (REST/SOAP) and HTTP/SSL protocol
  • 5+ years’ experience of operating database (MySQL, PostgreSQL, Oracle, MongoDB)
  • 5+ years’ experience of working with Linux-based operation system (CentOS, OSX)
  • Strong experience developing microservices (Docker) on Kubernetes
  • Strong experience with operating servers on cloud-based environments (Google Cloud, AWS, Azure)
  • Strong leads with designing, implementation skills to approach the solution for any new features or problem solving
  • Self-starter to able to work with minimal supervision for high quality output
Job Responsibility
Job Responsibility
  • Analyzes user and product requirements to design system flow and work processes
  • Develops data storage models based on functional requirements
  • Defines application programming interface access patterns and service integration touchpoints
  • Partners with quality assurance to document integration and test plan
  • Follows software development life cycle to implement new features through substantial programming effort
  • Creates integration tests that run with every code commit
  • Develops automation of service consumption
  • Defines and iterates on configuration parameters to allow software and services to best meet system needs
  • Builds out monitoring and alerting for live application programming interfaces and services
  • Repairs, restores, and repaves backend services
What we offer
What we offer
  • Paid Time off
  • Physical Wellbeing
  • Financial Wellbeing
  • Emotional Wellbeing
  • Life Events + Family Support
  • Fulltime
Read More
Arrow Right

Sr. Backend Engineer (Java/Kotlin)

Drive the evolution of our backend technology, infrastructure, and AI capabiliti...
Location
Location
Argentina , Buenos Aires
Salary
Salary:
60000.00 - 72000.00 USD / Year
silver.dev Logo
Silver.dev
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Proficiency in backend development with expertise in languages like Kotlin, Java, Go, Python or similar
  • Familiarity with database design, management, and optimization
  • Track record of building and maintaining scalable and reliable backend systems
  • Experience with AI is a strong plus, especially in applying models to real-world product use cases and optimizing performance in production environments
  • Expertise in designing scalable and maintainable backend architectures, understanding when to apply different architectural patterns
  • Capable of monitoring the whole architecture using tools like New Relic or Datadog
  • You know how to build scalable and maintainable code
  • You care about what to measure and how it impacts business and users
  • You track behavior, usage, and performance, and improve based on it
  • You care about why we build things, not just how
Job Responsibility
Job Responsibility
  • Work side by side with our CTO to build the foundations, the present, and the future of our backend, and AI systems
  • Develop and enhance backend systems for both existing and new applications in conjunction with mobile engineers
  • Contribute to systems design, infrastructure planning, CI/CD processes, and data workflows
  • Implementing and maintaining scalable and reliable backend systems using languages like Kotlin, Java, Go, Python or similar
  • Designing and defining backend tools, databases, and the architecture of our apps
  • Working directly with Cloud services (e.g., AWS, Supabase, Cloudflare)
  • Creating tools, libraries, or components to enhance the efficiency of backend development processes
  • Drive the evolution of our backend technology, infrastructure, and AI capabilities to ensure high performance, scalability, and seamless integration for our mobile applications
What we offer
What we offer
  • Equity package
  • 10-day team retreats abroad every quarter
  • 30-day onboarding in Paris (we cover flights and housing)
  • Laptop and work setup of your choice
  • Private health insurance (for US or LATAM hires)
  • A tight, ambitious team building something real — fast
  • Fulltime
Read More
Arrow Right

Sr. Backend Engineer - Tech Lead (Java)

As a Sr. Backend Engineer - Tech Lead, you will be reporting to the Vice Preside...
Location
Location
United States
Salary
Salary:
200000.00 - 220000.00 USD / Year
onereal.com Logo
Real Broker, LLC
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Extensive experience with Java 17+
  • Experience with Spring Boot, JPA (Hibernate), and SQL relational databases
  • Comfortable writing unit and integration tests and maintaining strong code coverage
  • Hands-on experience building applications using the microservices architecture
  • In-depth knowledge of relational databases, including indices, connection pools, transactions (ACID), and implications of schema designs on performance
  • Experience with NoSQL databases
  • BA/BS degree and 8+ years of related experience
  • Must have experience in Spring/Spring Boot, Hibernate, and Relational Databases
  • Demonstrated Project Coordination/Management skills
Job Responsibility
Job Responsibility
  • Collaborate with other engineers through pairing sessions, code reviews, and knowledge sharing
  • Mentor and lead junior engineers in software engineering methodology, design, and best practices
  • Work with the product team and feature owners to understand requirements and see them through to execution and deployment
  • Help lead the overall technical vision for all things back end, implementing features, squash bugs, and make improvements across Java Spring Microservices
What we offer
What we offer
  • Offers Equity
  • Offers Bonus
  • Offers Life and Health Insurance
  • 401K
  • Fulltime
Read More
Arrow Right

Sr. Engineer, Backend

Dialpad’s Product Engineering organization is responsible for building and maint...
Location
Location
India , Bangalore
Salary
Salary:
Not provided
dialpad.com Logo
Dialpad
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • 3-6 years of experience in information retrieval or distributed systems engineering
  • Strong understanding of search platforms and experience maintaining search engines at scale
  • Deep knowledge of indexers, analyzers, field mapping, and ranking techniques
  • Experience with NLP/NLU within the context of information retrieval
  • Expertise in dense vector manipulation and optimization
  • Familiarity with hybrid search, rank fusion, and reranking techniques
  • Proficiency in Go and Python 3 (experience with Rust or TypeScript is a plus)
  • Strong understanding of distributed systems, microservices, and message-driven architectures
  • Passion for real-time performance optimization and high availability
  • Experience with API design using Swagger, OpenAPI, or equivalent tools
Job Responsibility
Job Responsibility
  • Contribute to the design, development, and maintenance of information retrieval and distributed systems
  • Build and optimize search engines, including indexers, analyzers, ranking, and re-ranking strategies
  • Work on hybrid search techniques, including dense vector manipulation, rank fusion, and reranking
  • Maintain and enhance highly scalable search platforms with a focus on performance and cost efficiency
  • Ensure high availability, reliability, and fault tolerance in search services
  • Collaborate with cross-functional teams to translate business requirements into technical solutions
  • Develop and optimize real-time distributed systems, microservices, and message-driven architectures
  • Implement and maintain monitoring, alerting, and performance metrics for platform reliability
  • Evaluate and integrate emerging technologies to improve search capabilities
  • Write clean, modular, and well-tested code while following best engineering practices
What we offer
What we offer
  • Competitive benefits and perks
  • Robust training program
  • Inclusive office environment
  • Vibrant environment to cultivate collaboration and connection
  • Certified Great Place to Work
Read More
Arrow Right

Sr. Backend Engineer

Dialpad is seeking a talented and experienced Sr. Backend Engineer to join the g...
Location
Location
Argentina , Buenos Aires
Salary
Salary:
Not provided
dialpad.com Logo
Dialpad
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • 8+ years of experience in backend software engineering
  • Bachelor’s or Master’s degree in Computer Science or a related field, or equivalent experience
  • Solid Python experience is required
  • Strong experience working with Microservices and Serverless Architectures
  • Experience working with Containerization and Orchestration in the Cloud [Google Cloud Platform is a plus]
  • Strong knowledge of unit test and integration test frameworks
  • Good understanding of web technologies such as HTML, CSS, JavaScript, RESTful APIs, and web application frameworks
  • Experience with performance and optimization problems and a demonstrated ability to both diagnose and prevent them
  • Strong debugging and troubleshooting skills
  • Strong communication and collaboration skills
Job Responsibility
Job Responsibility
  • Create a long-term technical vision for this new backend while defining steps to deliver value in shorter-term phases
  • Write clear and complete architectural design documents that are easily understood by other team members
  • Provide estimates on technical resources and requirements necessary to plan and begin development
  • Develop well-tested features with appropriate test hooks, resulting in low defect reports and faster engineering throughput
  • Review technical designs to ensure features/products are well-integrated and fully meet business needs
  • Participate in code reviews, design discussions, and other team activities to ensure high-quality software delivery
  • Perform unit and end-to-end testing
  • Constantly optimize the architecture for maximum speed and scalability
  • Ensure that features are shipped on time and with the highest quality
  • Troubleshoot and debug issues with existing features as needed
What we offer
What we offer
  • Dialpad offers competitive benefits and perks, alongside a robust training program that helps you reach your full potential
  • We have designed our offices to be inclusive, offering a vibrant environment to cultivate collaboration and connection
  • Our exceptional culture, recognized repeatedly as a certified Great Place to Work, ensures every employee feels valued and empowered to contribute to our collective success
Read More
Arrow Right

Sr Staff Engineer, Backend - Core Services

As a Senior Staff Software Engineer, you are the Global Technical Anchor for sys...
Location
Location
Brazil , Sao Paulo; Rio de Janeiro
Salary
Salary:
Not provided
uber.com Logo
Uber
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • 12+ years of experience delivering massive-scale distributed systems
  • Expert-level understanding of distributed theory (CAP theorem, Paxos/Raft) and technical transformations
  • BS/MS/PhD in Computer Science or equivalent industry experience
Job Responsibility
Job Responsibility
  • Define the North Star multi-year roadmap and lead high-stakes buy vs. build evaluations on the Architecture Review Board
  • Directly tackle high-risk challenges, driving a company-wide shift toward Zero-Trust and Always-On architectures
  • Act as a leader of leaders by mentoring Staff Engineers and serving as a strategic advisor to VP/CTO level leadership
  • Fulltime
Read More
Arrow Right

Sr. Software Engineer - Backend, Customer Obsession

At Uber, customer obsession drives everything we do. We are dedicated to buildin...
Location
Location
India , Bangalore
Salary
Salary:
Not provided
uber.com Logo
Uber
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • 7+ years of relevant software development experience in one or more programming languages (e.g. Golang, Java, Python, C/C+) and distributed system design
  • Experience designing, implementing, and maintaining scalable RESTful APIs and microservices
  • Experience with database design and management (SQL and NoSQL), system performance optimization, and high-availability system design
  • Experience with CI/CD pipelines, cloud infrastructure (AWS, GCP, Azure), and containerization (Docker, Kubernetes)
  • Familiarity with monitoring tools, incident response, and alerting mechanisms
  • Experience collaborating on projects and working efficiently as part of a team
  • Thriving in ambiguity and having a go-getter attitude
Job Responsibility
Job Responsibility
  • Lead high-quality system designs, ensuring scalability, maintainability, and performance while considering both short- and long-term trade-offs
  • Exercise sound engineering judgment to make decisions around design patterns, architectural trade-offs, and feature prioritization
  • Contribute to team-wide architecture decisions and drive efforts to modularize and reuse components across services
  • Document technical designs (e.g., ERD, architecture design notes, engineering wikis) to maintain transparency, consistency, and alignment
  • Foster team-wide knowledge sharing by mentoring peers and establishing training opportunities related to software design patterns and technical best practices
  • Fulltime
Read More
Arrow Right