Full-Time

Blockchain Dapp Developer

Posted on 10/31/2025

Improbable

Improbable

51-200 employees

Metaverse developer and brand venture builder

No salary listed

London, UK

In Person

Category
Software Engineering (1)
Required Skills
React.js
TypeScript
Blockchain
Solidity
Next.js
Requirements
  • Experience on Ethereum Virtual Machine based smart contracts using Solidity, and Web3 JavaScript/TypeScript libraries to perform contract interactions with frontend and backend systems, as well as experience with creating and interacting with The Graph.
  • Shipped multiple production-grade decentralized applications built using Solidity.
  • Strong hands-on skills with the blockchain development framework Foundry.
  • Shipped web applications built with TypeScript (preferably React, Next.js) and used Wagmi hooks for smart contract integrations.
  • Deep understanding of blockchain architecture, token standards (ERC-20, ERC-721, ERC-1155) and non-compliant versions of the standard (e.g. USDC).
  • Knowledge of Solidity foundational best practices and the most common security vulnerabilities.
  • Thrive when solving complex, ambiguous problems and enjoy working across disciplines to find the best solutions.
  • Passionate about the Web3 community.
Responsibilities
  • Architect, build, launch and maintain Dapps - from concept to being used by the community
  • Build on-chain logic in smart contracts, and connect them to web front-ends to be used by crypto natives and novices
  • Work with business leads to define the product roadmap, help set the vision and strategy for the venture, act as a sounding board for venture leadership
  • Working closely with the Somnia Blockchain and providing product feedback to their team of developers
Desired Qualifications
  • Experience using The Graph protocol to create Subgraphs on smart contracts and/or designing smart contracts for targeting optimal indexability
  • Experience in the DeFi ecosystem; in particular swapping protocols (e.g. UniswapV2 or V3) and/or lending protocols (e.g. AAVE)
  • Awareness of Solidity fuzz testing, Slither and/or Mithril
  • Hardhat testing framework

Improbable builds and runs metaverse experiences for brands. It designs, hosts, and maintains virtual worlds and events powered by gaming, blockchain, and AI technologies. The company also acts as a venture builder, using its platform to launch new businesses in the metaverse. Its goal is to create practical, revenue-generating virtual experiences for brands that enable entertainment, social interaction, and business applications.

Company Size

51-200

Company Stage

Late Stage VC

Total Funding

$914M

Headquarters

London, United Kingdom

Founded

2012

Simplify Jobs

Simplify's Take

What believers are saying

  • $97.1M sale of Multiplayer Group to Keywords funds Web3 pivot.
  • Somnia mainnet launches post-10B testnet transactions for real apps.
  • Victory League co-launch creates interactive virtual football experiences.

What critics are saying

  • Somnia blockchain adoption fails, eroding Web3 confidence in 6-12 months.
  • Epic Unreal Engine 5.4 obsoletes Morpheus and SpatialOS in 12-24 months.
  • SEC labels $SOMI token securities, halting Otherside in 6-12 months.

What makes Improbable unique

  • SpatialOS enables server swarms for unprecedented virtual world scale.
  • Venture builder launches metaverse ventures like Somnia blockchain.
  • Morpheus powers interoperable MSquared network from 2022 $150M raise.

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Benefits

Health Insurance

Dental Insurance

Hybrid Work Options

Flexible Work Hours

Unlimited Paid Time Off

Growth & Insights and Company News

Headcount

6 month growth

-1%

1 year growth

-1%

2 year growth

-3%
ChainPlay
Dec 29th, 2025
Yuga Labs acquires Improbable's Otherside platform and secures perpetual tech license

Yuga Labs has acquired the Unreal Engine-based creation platform behind Otherside from tech firm Improbable, co-founder Greg Solano confirmed on Saturday. The deal includes a perpetual licence for Improbable's high concurrency technology, with many developers and engineers joining Yuga in the new year. The acquisition brings creator tools and the core technical team under Yuga's direct control. Solano described the move as a step towards building a leading creator platform in crypto, strengthening the company's focus on Otherside and Bored Ape Yacht Club with an emphasis on creator tools and digital ownership.

EU-Startups
Oct 1st, 2025
fan3 secures €4.2M to combat scalpers

London-based fan3 has raised €4.2 million from Improbable to tackle ticket reselling and scalping. The company aims to ensure real fans get first access to tickets and plans to remove instant non-fan resales. The funding will help scale technology and enhance industry integrations, allowing artists to connect directly with audiences and provide fair ticket access. The live entertainment sector faces challenges with half of ticket inventory on secondary markets and increasing bot activity.

The Tech Outlook
Sep 2nd, 2025
Somnia Launches Mainnet and $SOMI Token to Power Real-World Applications Following 10 Billion Testnet Transactions

Somnia was developed by Improbable, a venture builder and leading Web3 software development company, in partnership with the Somnia Foundation, which stewards the blockchain as public infrastructure for developers, companies, and ecosystems.

Theatre Weekly
Jul 15th, 2025
Perfect Show For Rachel Announces UK Tour from October 2025 to June 2026

They are joined by Improbable, the award-winning company of improvisers and theatre-makers, who were named Producer of the Year at The Stage Awards 2023.

ChainCatcher
Oct 25th, 2024
The Otherside development company Improbable will launch the Somnia blockchain DevNet phase

ChainCatcher news, according to CoinDesk, the Otherside development company Improbable will launch the Somnia blockchain DevNet phase.

INACTIVE