Job Overview

We are looking for an exceptional System Architect to lead the design and evolution of our platform architecture. This is a hands-on role requiring deep technical expertise in building secure, scalable, and cost-efficient systems. You will be responsible for critical architectural decisions affecting system performance, security, reliability, and modularity across our entire platform.

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In this role, you will also be responsible to:Architecture & Design

- Design microservices and platform features from concept to production-ready specifications
- Create technical designs for complex system components and develop proof-of-concepts in Golang
- Architect secure, fault-tolerant systems with automated failover, circuit breakers, and end-to-end encryption
- Analyze existing system architecture to understand current implementations and plan gradual replacement of legacy components
- Plan implementation phases, migration strategies, and feature deprecation timelines

Architectural Governance & Collaboration
- Review and approve architectural designs from engineering teams with detailed feedback
- Lead architecture review sessions and facilitate technical decision-making across teams
- Partner with Product Managers, Dev Leads, Security, SRE and Infrastructure teams to establish platform-wide standards
- Lead threat modelling exercises and drive technical consensus for platform-wide initiatives
- Mentor engineers on architectural best practices and resolve complex technical challenges

Documentation & Planning
- Write comprehensive technical documentation including ADRs, design documents,



runbooks, and API specifications
- Create visual system diagrams and research technical solutions from diverse sources
- Design zero-downtime migration strategies and define acceptance criteria for architectural changes

RequirementsQualifications / Experience / Technical Skills
- 8+ years building scalable distributed systems, with 3+ years in System/Platform Architect roles
- Proven experience architecting both large microservice environments (100+ services) and monolithic applications
- Strong hands-on Golang coding skills – must write production-quality code
- Communication & Data: Protocol Buffers, gRPC, WebSockets, Kafka event streaming, PostgreSQL (partitioning, replication, HA)
- Security & Authentication: OAuth 2.0/OIDC, JWT, mTLS, data encryption, public key cryptography, zero-trust architecture
- Infrastructure & Operations: Working knowledge of Kubernetes, Docker, CI/CD pipelines, Infrastructure as Code (Terraform), distributed systems patterns (Saga, circuit breakers, retries)
- Scale: Experience with systems handling millions of requests/events per day
- Exceptional technical writing and communication abilities for diverse audiences
- Experience planning phased implementations and leading complex cross-team projects
- Proven track record with feature flags, gradual rollouts, and zero-downtime deployments




- Ability to facilitate architectural decision-making and create technical roadmaps
- Mentorship mindset and cost analysis capabilities
- Experience with AI-assisted workflows, particularly in system analysis and hunting for inconsistencies and corner cases.

Nice to Have
- Additional Languages: Ruby, Rust, Python, Java, C++, Kotlin-multiplatform
- Advanced Security: Key Management Systems (HSM, AWS KMS), Secrets Management (Vault), specific crypto algorithms xqbhyrx
- Extended Infrastructure: Service mesh (Istio, Linkerd), NoSQL databases, Redis clustering, stream processing (Flink, Spark)
- Cloud & Compliance: AWS/GCP/Azure expertise, PCI-DSS, HIPAA, SOC2

Community:

Open source contributions, conference speaking, technical writing 8+ years building scalable distributed systems, 3+ years in System/Platform Architect roles, Experience with large microservice environments (100+ services) and monolithic applications, Strong hands-on Golang coding skills (production-quality), Proficiency in Protocol Buffers, gRPC, WebSockets, Kafka, and PostgreSQL, Knowledge of OAuth 2.0/OIDC, JWT, mTLS, and zero-trust architecture, Working knowledge of Kubernetes, Docker, CI/CD, Terraform, and distributed systems patterns (Saga, circuit breakers), Experience with systems handling millions of requests/events per day, Exceptional technical writing and communication skills, Experience with phased implementations and cross-team projects, Track record with feature flags and zero-downtime deployments, Ability to create technical roadmaps and facilitate decision-making, Experience with AI-assisted workflows for system analysis

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📌 Principal Software Engineer (Barcelona)
🏢 Workato
📍 Barcelona