Software Architect – AI​/Agentic Systems

Remote
· Full-time

Ubiminds is a GPTW-certified, people-first company that partners with American software product companies to scale their development teams. We connect Brazil’s top 5% talent with innovative U.S. companies through a unique combination of staff augmentation and employer-of-record services
.

We are supporting a cutting-edge company building an AI-first coding platform (think Replit) and looking for a Software Architect with strong AI/Agentic experience to lead this initiative.

We’re looking for a Software Architect who can design the future of software development—where autonomous AI agents and human developers collaborate seamlessly
.

This role is ideal for someone who thrives at the intersection of AI, system design, and developer platforms
, and is excited to build systems where agents can plan, write, test, and deploy code autonomously
.

You will play a key role in defining how agentic workflows, LLM reasoning loops, and developer tooling come together in a scalable, production-grade platform.

• Architect and lead the development of an AI-first coding platform
  .

• Design systems where AI agents and developers collaborate in real time.

• Build and implement agentic systems capable of:

  • Planning tasks

  • Writing code

  • Running tests

  • Deploying applications

• Integrate LLMs (especially Claude) into production workflows.

• Design tool-use (function calling) and agent orchestration layers.

• Implement strategies for long-context management and multi-step reasoning loops.

• Define architecture for scalable, distributed AI systems on AWS.

• Evaluate when to leverage .NET or alternative ecosystems
  , ensuring the best tool for each challenge.

• Work closely with engineering teams to bring architecture into production.

• Strong experience as a Software Architect or Staff+ Engineer
  .

• Proven experience building or designing AI/agentic systems
  .

• Deep understanding of:

  • LLM integrations (especially Claude or similar models)

  • Function calling / tool-use patterns

  • Agent orchestration and reasoning loops

  • Prompt engineering and context management

• Hands-on experience with AWS and complex cloud-native architectures.

• Strong background in distributed systems and scalable platform design
  .

• Experience working across different stacks (current foundation in .NET
  , but openness to other ecosystems).

• Ability to make high-impact architectural decisions in fast-evolving environments.

• Strong communication skills and ability to influence technical direction.

• English proficiency at C1 level (written and verbal).

• Experience building developer platforms or coding tools
  .

• Familiarity with tools like Replit, Cursor, or AI-assisted IDEs
  .

• Experience with
  multi-agent systems or orchestration frameworks.

• Background in Dev Ops automation or CI/CD pipelines powered by AI
  .

• Exposure to product-led engineering environments
  .

• Build a next-generation AI coding platform from the ground up.

• Work at the forefront of agentic AI and developer experience
  .

• Influence how AI transforms software engineering workflows
  .

• Join a highly innovative environment with high ownership and technical autonomy
  .

• Collaborate with top-tier engineers on cutting-edge AI systems
  .

- People First.We are all about people!

- Challenge yourself.There’s always room for improvement and continuous improvement is in our essence.

- Make it happen.Be ready to take challenges as they come. It’s all about attitude and commitment.

- We’re in this together.We work as a team, thrive as a team, and evolve as a team.

- Averaging on awesome.We work hard to deliver high-quality services and look forward to exceeding expectations.

- Keep it real.We promise you honesty, transparency, and…