Esteban Vargas @helloteban

Engineering at @kiva Medellin, Colombia Joined December 2014

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Esteban Vargas @helloteban

4 days ago

@DanJCleary @AnthropicAI Congrats man!

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Akshay Kothari @akothari

5 days ago

Imagine a world where we simplify every role in a company down to just two: 1. Builders 2. Sellers

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Before vibe coding became a thing, programming was already evolving in that direction. It already increasingly consisted of installing and configuring stuff other people wrote, without reading the source.

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Daniel Glejzner @DanielGlejzner

6 days ago

Software hiring has become absurd. At work, you’re expected to use AI to offload manual coding and move faster. Then, to get your next contract, you’re asked to code from memory with no assistance. Pass the interview - and you’re expected to use AI again. It has never been this broken.

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Esteban Vargas @helloteban

a week ago

@alan_argoz Estás viejo 😂 no mentiras. Happy birthday my friend! Glad to have been close to you in like 2 of those many lifes.

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Esteban Vargas @helloteban

a week ago

@stanleefounder Why doesn’t he get a big co / scale up software engineering job that pays $200k base?

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Esteban Vargas @helloteban

2 weeks ago

@ElColeccioniste A Vargad y Lerma les da para 2 años más.

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Esteban Vargas @helloteban

2 weeks ago

@FabinPertuz3 El que mejor esté en cada posición. Pero sospecho que estos estarán: Mier, Cabal (lateral izq), Solís, Cachito Gómez y Neyser si Duran no madura.

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Esteban Vargas @helloteban

2 weeks ago

@GraficoFutbol El único mejor que Lorenzo ahí es Gallardo

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Esteban Vargas @helloteban

2 weeks ago

@real_fanJunior Muy buena lista. Por ahí se puede considerar a Brayan Leon también dado que hay que experimentar para encontrar el 9 (a Escorcia ni lo hemos visto en Nacional podría salir).

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Esteban Vargas @helloteban

2 weeks ago

@HINCAPIEDATOS Así tal cual , no le cambio ni un solo renglón

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Esteban Vargas @helloteban

3 weeks ago

@shl Lol I wish. For long tasks, I’m delegating sub tasks to sub agents. Also for different tasks, I’m running different terminal windows using git work trees to work on 2 branches at the same time.

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Esteban Vargas @helloteban

3 weeks ago

@freddier With teams such as Uzbekistan and Curaçao that would’ve not qualified with the previous 32 team format this is more than expected. I think it’s good though. Gives us good surprise such as Cape Verde

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Esteban Vargas @helloteban

3 weeks ago

@benln Went to the one jn Buenos Aires. Will be there in Medellin as well!

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Esteban Vargas @helloteban

3 weeks ago

@MyLatinLife North America in paper. Latin America in practice.

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diva @divaagurlxw

4 weeks ago

As an AI Engineer. Please learn >Harness engineering, not just prompt engineering >Context engineering, not just long prompts >Prompt caching vs. semantic caching tradeoffs >KV cache management, eviction, reuse, and memory pressure at scale >Prefill vs. decode latency and why they optimize differently >Continuous batching, paged attention, and throughput optimization >Speculative decoding vs. quantization vs. distillation tradeoffs >INT8, INT4, FP8, AWQ, GPTQ, and when quantization hurts quality >Structured output failures, schema validation, repair loops, and fallback chains >Function calling reliability, tool contracts, argument validation, and idempotency >Agent guardrails, loop budgets, tool budgets, and termination conditions >Model routing, graceful fallback logic, and degraded-mode UX >RAG architecture: chunking, embeddings, hybrid search, reranking, and freshness >Retrieval evals: recall, precision, grounding, attribution, and citation quality >Evals: golden sets, regression tests, adversarial tests, LLM-as-judge, and human evals >LLM observability as a first-class discipline: traces, spans, tokens, latency, errors, and drift >Cost attribution per feature, workflow, tenant, and user journey not just per model >Safety engineering: prompt injection defense, data leakage prevention, and permission boundaries >Multi-tenant isolation, cache safety, and cross-user context contamination prevention >Fine-tuning vs. in-context learning vs. RAG vs. distillation and when each is the wrong tool >Latency, quality, cost, and reliability tradeoffs across the full inference stack >Production failure modes: hallucinated tool calls, malformed JSON, stale retrieval, runaway agents, and silent eval regressions

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Esteban Vargas @helloteban

4 weeks ago

@ThePrimeagen Is git not for the agentic coding era at all?

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Esteban Vargas @helloteban

4 weeks ago

@karpathy @salomon_diei Can you please expand on how this is not just RAG on Slack?

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Esteban Vargas @helloteban

4 weeks ago

@luisasoyyo72 @sgarciaz Es un orgullo ser una zona de placer y diversión globalmente conectada. Lo somos precisamente porque logramos ser una ciudad segura. Cali tiene una élite empresarial admirable pero las masas se quedaron con un pensamiento empobrescedor que tiene esa ciudad como call of duty

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Esteban Vargas @helloteban

4 weeks ago

@Micro2Macr0 Stocks in the Colombian market are a bargain if you do a PE ratio analysis. Real estate is mispriced here. There’s an arbitrage on cost quality. You pay 3rd world prices for a concrete-and-steel luxury high-rise in a recognized lifestyle hub and get 1st world revenues (Airbnb)