Backend Engineer

Role Overview

We are hiring a Backend + Infra + MEV Execution Engineer to build and own Everlong’s automated execution layer across CEX and DEX markets.

You will compete directly against market makers and MEV searchers, capturing yield through:

  • CEX/DEX arbitrage
  • DEX/DEX arbitrage
  • Internal MEV capture around Everlong vault flows

Building and maintaining protocol automation bots that handle arbitrage, rebalancing, liquidations, and execution across multiple platforms/chains to automate operations across platforms.

Not just creating new bots – you will own the entire bot ecosystem and ensure it runs autonomously, reliably, and profitably.

Responsibilities

Arbitrage Execution (Core)

  • Build arbitrage bots (CEX ↔ DEX, DEX ↔ DEX)

  • Execute trades using private RPC, bundles, gas-optimised routing that is chain aware

  • Reduce slippage, improve execution cost, win the mempool race

  • Ensure internal MEV flows stay internal (no leakage to external searchers)

  • Ensure internal MEV flows stay internal (no leakage to external searchers)

Vault Automation (Rebalancing + Liquidations)

  • Build and maintain keeper bots for:
    • Concentrated liquidity range rebalancing
    • Position delta rebalancing
    • Liquidations for leveraged vaults / CDP strategies
  • Guarantee optimal execution timing (not early, not late)

Vaults should behave like autonomous financial organisms.

Monitoring & Observability

  • Build a robust backend API that exposes all vault + execution metrics for the frontend team

  • Own instrumentation + metrics collection (Prometheus / Grafana / OpenTelemetry) and expose

    well-documented endpoints for FE consumption.

  • If FE is blocked, implement minimal production dashboards yourself (Grafana or similar).

  • Integrate alerting + incident automation (Telegram / PagerDuty / Slack).

  • Implement fallback keeper systems + failover logic to protect vault operations.

  • Ensure zero missed liquidation or rebalance events.

Reliability & Uptime

  • Mempool-aware routing + gas strategy optimisation
  • Chain aware logic with different block-building methodologies such as L2 with centralized sequencer, L1 with fast block production, etc.
  • Maintain 100% bot uptime
  • Benchmark execution quality against external keepers / searchers

If someone else earns MEV from our flow, we treat it as a bug.

Qualifications

Must-have

  • Direct experience building live arbitrage or MEV execution systems
  • Strong backend/infra experience in Rust, Go, or TypeScript
  • Deep understanding of:
    • EVM internals
    • private RPC / bundles / gas auctions
    • latency and execution optimisation
  • Experience with:
    • CEX APIs: Binance, OKX, Bybit
    • DEX routing: Uniswap v3 / Sushi / Perennial

Nice-to-have

  • Experience running high-stakes MEV bots
  • DeFi knowledge of CDPs and Lending systems
  • Solidity experience
  • Prior role at: Jump, Wintermute, Flowdesk, Amber, Portofino, etc.
  • Multi-chain infra (Ethereum L2s, Berachain, Katana, SVM ecosystems)

Compensation

Base salary: Competitive (depends on seniority)

Profit share: 10-20% of arbitrage / MEV captured

Team offsites: 2-3 times a year

Equity + Tokens: core team alignment available.

Applying through us gives you a notably higher chance of getting your CV in front of the Foreverlong team. Since we’re working closely with them, your profile won’t just sit in a pile.
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