Company
AI
MemberofTechnicalStaff(MTS)–CoreFull-Stack/Backend
Neural analysis suggests this role is
optimal for Mid candidates.
“Member of Technical Staff (MTS) – Core Full-Stack / Backend. Skills: Core Full-Stack / Backend engineering, high-performance backends, deterministic, bulletproof software around non-deterministic AI outputs, Production-Grade AI Agents, Performance Engineering. Design, develop, and optimize core services, heavy web architectures, and transaction flows for our platform. Take AI loops out of the 'toy project' phase and build the software loops, validation guardrails, and caching mechanisms required”
What You'll Achieve.
build and scaled fintech systems for over 3 million users; run them reliably at scale
Industry & Context.
Diagnose and resolve complex backend bottlenecks, database deadlocks, and high-concurrency latency spikes
take home technical assignment/excercise which typically takes 3-4 days
What They're Looking For.
Must Have
3–4 years of intensive full-stack or backend engineering experience, Proven track record in high-velocity tech startups with heavy execution demands, You excel in ambiguous environments where the destination is clear but the map is yet to be drawn, You know how to build software that scales, You understand memory management, concurrency primitives, asynchronous task processing, and how web protocols actually break under load
What You'll Do.
and optimize core services
heavy web architectures
and transaction flows for our platform
Take AI loops out of the 'toy project' phase and build the software loops
validation guardrails
and caching mechanisms required to run them reliably at scale
Diagnose and resolve complex backend bottlenecks
and high-concurrency latency spikes
How You'll Work.
Communication Scope
communication & articulation ability
Full Job Description
## Description About Us We are an AI-first engineering intelligence platform building the future of developer workflows completely from scratch. We are the core engineering team behind Fi, where we built and scaled fintech systems for over 3 million users. We don’t stitch together basic API wrappers; we work directly on deep system architectures. If you want a highly challenging, completely flat environment where you own your vertical without bureaucratic red tape, this is it. The Role & Technical Depth We are shifting past static components into high-concurrency, data-heavy production web flows and fully autonomous AI agent systems. We need a stellar engineer who can write high-performance backends and wrap deterministic, bulletproof software around non-deterministic AI outputs. Build the Stack: Design, develop, and optimize core services, heavy web architectures, and transaction flows for our platform. Production-Grade AI Agents: Take AI loops out of the "toy project" phase and build the software loops, validation guardrails, and caching mechanisms required to run them reliably at scale. Performance Engineering: Diagnose and resolve complex backend bottlenecks, database deadlocks, and high-concurrency latency spikes. Our Expected Stack:Go (Golang) or high-performance backend equivalents, relational/non-relational databases, Redis cache/queuing systems, and modern, highly optimized web engineering frameworks. Who You Are Experience:3–4 years of intensive full-stack or backend engineering experience. Startup DNA: Proven track record in high-velocity tech startups with heavy execution demands. You excel in ambiguous environments where the destination is clear but the map is yet to be drawn. Strong Fundamentals: You know how to build software that scales. You understand memory management, concurrency primitives, asynchronous task processing, and how web protocols actually break under load. ## Additional Information Selection Process : Once you apply via the career pag
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