Senior Software Engineer

Kenyan Edu; Minneapolis, Northern (MN, KY); Hybrid; USD 150,000 - 210,000; Full time

Job summary

Collaboration.Ai, a Minnesota-based AI software company, seeks a senior full‑stack engineer to own features across the NetworkOS stack. You’ll work from database schemas to UI, ensuring reliability, performance, and scalable design for regulatory domains.

You will contribute across Kotlin services, GraphQL/REST APIs, and Next.js UI, mentoring others and pushing the roadmap with production code weekly. This is a high-autonomy, senior team role in a defense‑adjacent business.

Qualifications

• 5+ years of professional software engineering experience with backend focus and frontend production work.
• Strong Kotlin and Spring Boot mastery; willingness to use Java/Spring if needed.
• Proficiency in TypeScript/React with ability to ship UI features from a design system.
• Solid Python experience with modern frameworks (FastAPI ok).
• Experience designing PostgreSQL schemas and managing migrations.
• Proven track record with Docker, Kubernetes, and AWS in microservices environments.
• Experience with GraphQL/REST APIs and API design in scalable systems.
• Familiarity with CI/CD processes and automated testing; security-conscious development.

Responsibilities

• Deliver features end-to-end across PostgreSQL schema, Kotlin service, GraphQL contract, and Next.js UI.
• Own core API and service health; design and maintain GraphQL and REST APIs with clean boundaries.
• Master the data layer with optimized queries, zero-downtime migrations, and caching strategies.
• Build comprehensive test suites and maintain CI/CD quality gates for production readiness.
• Design resilient systems with structured logging, tracing, metrics, and circuit breakers.
• Mentor mid-level and junior engineers through code reviews and architecture discussions.
• Automate with agentic coding tools and AI-native development practices across the stack.

Skills

Kotlin

Spring Boot

TypeScript

React

Python

PostgreSQL

Docker

Kubernetes

AWS

GraphQL

CI/CD

AI-native workflows

Tools

Next.js

GraphQL (Netflix DGS)

Liquibase

Kafka

DynamoDB

PostgreSQL

OpenTelemetry

DataDog

Amazon S3

GitHub Actions

Job description

Headquarters: Minneapolis, MN

URL: http://collaboration.ai

Who We Are

Collaboration.Ai is a mission-focused, AI-powered software and services company based in Minnesota, with employees, partners, and customers around the world. We unite people, technology, and purpose to accelerate breakthroughs that transform industries, empower communities, and create a more sustainable future. We collaborate with organizations across the defense ecosystem, helping them navigate complex challenges and drive transformative change.

Our Products

NetworkOS — NetworkOS is an AI-powered platform that aligns people, purpose, ideas, and expertise in real-time, generating actionable insights to propel movements forward.

CrowdVector — CrowdVector is an integrated solution marketplace and innovation management platform that rapidly uncovers new ideas and advances breakthroughs to fuel movements.

About the Role

You’ll ship product across the full NetworkOS stack — Kotlin/Spring Boot microservices through Next.js/React interfaces — keeping the platform reliable, performant, and architected for 10x growth in regulated enterprise and defense environments.

This is a hands‑on execution seat on a small, senior team. You’ll own complete vertical slices from database schema to UI, with no cross‑team handoff gaps and no 'not my layer' excuses. Your code commits move the roadmap — and your work is visible from day one.

Whole‑stack ownership. Production every week. Code that moves the roadmap.

What You’ll Do

• Deliver features end‑to‑end — own complete vertical slices (PostgreSQL schema, Kotlin service, GraphQL contract, Next.js UI) and ship production features without waiting on handoffs
• Own core API and service health — design and maintain GraphQL and REST APIs with clean domain boundaries, keeping latency low and reliability high under growing load
• Master the data layer — design PostgreSQL schemas, optimize queries for scale, manage zero‑downtime migrations with Liquibase, and build effective caching strategies
• Ship with confidence — comprehensive test suites (unit, integration, contract, UI) at 80%+ coverage, with CI/CD quality gates that catch problems before production
• Build resilient systems — structured logging, distributed tracing, custom metrics, circuit breakers, and graceful degradation patterns
• Elevate the team — mentor mid‑level and junior engineers through code reviews, architectural discussions, and pair programming
• Automate with agents — build agentic primitives that make everyday full‑stack work faster; AI‑native development is how we work, not a side experiment

Our Tech Stack

Backend: Kotlin, Spring Boot, Ktor, Gradle; GraphQL (Netflix DGS); REST/OpenAPI

Frontend: Next.js (App Router), React, TypeScript; Turborepo; Tailwind CSS + shadcn/ui

Data Layer: PostgreSQL, Liquibase, Kafka, DynamoDB, Amazon S3

AI Integration: Python, FastAPI (LLM‑powered service touchpoints)

Infrastructure: Docker, Kubernetes (AWS EKS), Helm, ArgoCD

CI/CD: GitHub Actions, Codecov, Snyk

Observability: DataDog (APM, logs, tracing), OpenTelemetry

Security: AWS KMS, AWS Secrets Manager, Auth0

What We’re Looking For

Must‑Haves

• 5+ years of professional software engineering experience, backend‑weighted with real production frontend contributions
• Strong proficiency in Kotlin and Spring Boot (or Java/Spring with willingness to adopt Kotlin)
• Working proficiency in TypeScript and React (Next.js preferred) — able to ship UI features within an established design system
• Solid experience with Python and modern frameworks (FastAPI preferred)
• Experience with PostgreSQL, relational database design, and migration management
• Proven track record in continuous delivery environments with automated testing
• Hands‑on Docker, Kubernetes, and AWS; strong grasp of microservices patterns, API design, and distributed systems
• AI‑native workflows — demonstrated ability to leverage Claude Code/Codex or similar agentic coding tools to accelerate development
• US citizenship required (DoD contracting — IL4/IL5 environments — and FedRAMP compliance)

Nice‑to‑Haves

• GraphQL API development and schema design at scale
• LLM/AI integration patterns (structured outputs, LLM workflow orchestration)
• Security‑conscious development and compliance frameworks (SOC 2, NIST 800‑171/800‑53)
• Depth in AWS services (EKS, RDS, S3, Secrets Manager) and DataDog observability
• Greater Twin Cities, MN based
• Open‑source contributions or active technical community involvement

Why Join Collaboration AI?

Work that matters. We build AI‑powered solutions for defense, public sector, and regulated industries — SOC 2 and NIST compliance, FedRAMP readiness, and customers whose missions demand the most trustworthy software.

AI‑native by default. We build with AI, not just for AI. Agentic coding tools (Claude Code/Codex/etc.), agent SDKs and harnesses, MCP servers, and Agent Skills standards are how we work daily. You’ll push the boundaries of what AI tooling can do across the full stack.

Real ownership. High‑autonomy culture on a small, senior team. You’ll own outcomes end‑to‑end — and your work will be seen, used, and valued.

Modern stack, no legacy drag. Cloud‑native Kubernetes infrastructure, Kotlin and Next.js, continuous delivery — built for growth, not maintenance mode.