Engineering

August 14, 2026

Building a Marketplace Where Better Offers Win

Posted by SoLo Funds Engineering Team How SoLo redesigned its lending marketplace with blind bidding, shifting competition from funding speed to offer quality while keeping the borrower experience simple. The team shares the engineering, reliability, and marketplace design behind the change—and the early results for borrowers. Read More

July 7, 2026

From AI Coding Experiments to a Spec-First Mobile Workflow

Posted by SoLo Engineering Team Learn how a spec-first AI workflow helped our mobile team keep iOS and Android aligned, improve code reviews, and accelerate development while keeping engineering decisions human-owned. Read More

June 3, 2026

Building KYC That Customers Can Trust: Fast Retries, Consistent Decisions

Posted by SoLo Engineering Team How we made KYC processing idempotent so retries, duplicate events, and parallel workers do not create duplicate side effects. We relied on durable step state and database guarantees. This post focuses on patterns, not proprietary implementation details. Read More

May 22, 2026

From Missed Calls to Structured Outcomes: Building a Guard-railed AI Voice Agent for Recovery Operations

Posted by SoLo Funds Engineering Team Building a guardrailed AI Voice Agent for Recovery operations. How we focused on consistent intake + clean hand-offs, not “max autonomy.” Read More

March 16, 2026

When Webhooks Retry, Users Shouldn’t Notice: Idempotency Locks with Redis

Posted by SoLo Engineering Team This article explains how we use a short-lived Redis idempotency lock to protect external vendor transfer webhooks from race conditions, duplicate retries, and out-of-order delivery. By using an atomic SetNx cache key with a bounded TTL, we ensure each transfer status is processed exactly once within a retry window, preventing duplicate database updates, events, and side effects while keeping the system resilient and recoverable. Read More

February 2, 2026

Social Sign-In For Faster, Safer Access

Posted by SoLo Engineering Team How SoLo Funds integrated Google and Apple social sign in so members can get back to the same account in fewer taps, and how any team can do it without weakening account integrity or risk controls. Read More

October 21, 2025

Breaking the “Lethal Trifecta” for LLM Agents

Posted by Keroshan Pillay When a language model can see private data, read untrusted content, and send information to the outside world at the same time, you’ve assembled the “lethal trifecta.” This article shows how to defuse it in real products—especially in finance—by making safety an architectural property, not a prompt. Read More

September 30, 2025

Building an AI KPI Agent: From Raw Signals to Weekly Strategy

Posted by SoLo Engineering Team We built a lightweight AI agent that turns weekly KPIs and community feedback into a clear, actionable story — delivered straight to Slack. By combining Snowflake data with community conversations, the agent synthesizes both the what and the why behind our metrics. The result: meetings shift from recap to decision, context is shared across teams, and we achieve enterprise-grade insight at startup-scale cost. All for just a few dollars a month. Read More

September 10, 2025

From Overspend to Optimized: Transforming Infrastructure Costs

Posted by SoLo Engineering Team From Overspend to Optimized: Transforming Infrastructure Costs Read More