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73 solidity developer jobs at 58 companies in Norwalk, CT

2w
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Blockchain Web3 Engineer
Jersey City, New Jersey, United States
$100k-$120k/yr OnsiteFull Time
Tata Consultancy Services
Tata Consultancy ServicesNational Stock Exchange of India: TCS: Global provider of IT services, consulting, and business solutions.
4+ YOEStrong blockchain fundamentals, smart contract development (Solidity preferred), EVM and/or enterprise chain experience, node operations, and 4+ years engineering experience.
Solidity, Hardhat, Foundry, Truffle, Remix, Ethereum, Polygon, Arbitrum, Optimism, BSC, Hyperledger Fabric, Corda, Quorum
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2mo
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Principal Protocol Engineer
New York City, New York, United States
$150k-$293k/yr HybridFull Time
Nasdaq
NasdaqNASDAQ: NDAQ: Operates global electronic marketplaces and provides financial technology services.
8+ YOE8+ years software engineering; 4+ years smart contract/protocol development; Solidity expert; Rust knowledge; token standards; governance and integration experience.
Solidity, Rust
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1mo
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Senior Blockchain Engineer - Digital Assets Platform - VP
New York, New York, United States
$142k-$213k/yr HybridFull Time
Citi
CitiNYSE: C: Global diversified financial services holding.
7+ YOEBachelor's in CS/Engineering, 7+ years software development, 5+ years Java/Spring backend experience, familiarity with web3 (Web3J/Web3JS) and Solidity preferred, strong engineering fundamentals and communication.
Java, Spring, Web3J, Web3JS, Solidity, Git, Jira, Jenkins, Helm Charts
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1mo
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Digital Assets Blockchain Java Developer - AVP
New York, New York, United States
$121k-$182k/yr HybridFull Time
Citi
CitiNYSE: C: Providing global banking, investment, and wealth management services.
4+ YOEBachelor's in CS/Engineering, 4+ years software development lifecycle experience, 3+ years backend Java Spring experience, web3 familiarity (Web3J/Web3JS/Solidity) preferred, strong CS fundamentals and collaboration skills.
Java, Spring, Web3J, Web3JS, Solidity, git, Jira, Jenkins, Helm Charts, Agile Methodology, Scrum
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1mo
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Senior Software Engineer - Developer Platform
San Francisco or New York City
$196k-$265k/yr HybridFull Time
Pave
Pave: Cloud-based software for managing and benchmarking employee compensation.
4+ YOE4+ years in backend/infrastructure/developer experience; strong developer empathy; experience leading cross-team projects; familiarity with AI-assisted developer tooling; solid cloud (GCP) and production-systems skills.
TypeScript, Node.js, Orbstack, ClickHouse, Kubernetes, Terraform, GCP, Datadog, GitHub Actions, E2B, Incident.io
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1mo
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Research Developer
Amsterdam or Chicago or London or New York City
OnsiteFull Time
Headlands Technologies
Headlands Technologies: A global proprietary trading firm utilizing quantitative algorithms.
Apply statistics and machine learning to noisy data; develop predictive signals and trading models; solid software development skills in Java, C++, or Python; collaborative and results-oriented.
Java, C++, Python
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1d
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Blockchain / Backend Engineer - Vice President
New York City, New York, United States
$150k-$200k/yr HybridFull Time
iCapital
iCapital: A global fintech platform for alternative investment marketplace access.
9+ YOE3+ Mgmt9+ years building enterprise SaaS cloud solutions, 3+ years technical leadership, experience with DAML/Canton/Solidity, Python and FastAPI, relational DB modeling, and AWS.
DAML, Canton, Python, FastAPI, Solidity, AWS, Toke
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3mo
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Polymarket - Smart Contract Engineer
New York, New York, United States
RemoteFull Time
YieldNest
YieldNest: Liquid restaking protocol for risk-adjusted DeFi yields.
4+ YOE4+ years in Solidity; strong EVM and DeFi knowledge; secure, high-performance contract development.
Solidity, EVM, Web3, OpenZeppelin
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2mo
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Senior Solutions Engineer, Banking and Capital Markets
New York or Chicago or Boston or Denver or Miami or Atlanta or Canada or Toronto or Washington or United States
$111k-$269k/yr RemoteFull Time
Chainlink Labs
Chainlink Labs: Building decentralized oracle networks for blockchain smart contracts.
3+ YOE3+ years customer-facing delivery or solutions engineering experience; hands-on blockchain engineering, Solidity and EVM experience; proficiency with middleware, APIs, and languages like JavaScript/TypeScript/Go/Rust/C++; proven PoC-to-production delivery.
Solidity, EVM, JavaScript, TypeScript, Go, Rust, C++, AWS, RPC
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1mo
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kdb+ Engineer
New York, New York, United States
HybridFull Time
Data Intellect
Data Intellect: Specialist kdb+ and data engineering consultancy for capital markets.
2+ YOE2+ years of hands-on kdb+ development, solid q language and time-series data knowledge, Unix/Linux experience, strong problem-solving, SDLC familiarity, ability to work independently and with clients.
kdb+, q language, Unix/Linux, Python, AWS, GCP, Azure
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6d
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Senior Blockchain Engineer - Digital Assets Platform(Java Developer) - New York
New York, New York, United States
$41k-$145k/yr OnsiteFull Time
Photon: A technology employer building enterprise-grade backend systems and digital assets platform solutions.
7+ YOE7+ years software development experience, strong backend Java/Spring expertise, bachelor's in CS/engineering, familiarity with web3 libraries and DevOps toolchains, strong communication and engineering fundamentals.
Java, Spring, Web3J, Web3JS, Solidity, git, Jira, Jenkins, Helm Charts
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1w
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iOS Software Engineer - rednote
New York City, New York, United States
OnsiteFull Time
Xiaohongshu
Xiaohongshu: Social media and e-commerce platform for lifestyle sharing.
3+ YOEBachelor's in CS,3+ years iOS/Android development,proficient in Swift/Objective-C and UIKit/SwiftUI,experience with large-scale apps,solid CS fundamentals,and able to work in English and Chinese.
Swift, Objective-C, UIKit, SwiftUI, Flutter, React Native
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3mo
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Rust Developer Intern (Spring 2026)
New York City or Windsor
$2k-$4k/mo HybridInternship
Blockhouse
Blockhouse: Institutional platform for systematic quantitative trading and investment management.
Solid Rust experience; Linux/UNIX; concurrency/async; well-tested code.
Rust, Linux, WebSocket, REST, GCP, TypeScript, React, Python, TCP/IP
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6d
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Sr. Blockchain Java Developer (FTE / Hybrid)
New York, New York, United States
$100k-$150k/yr HybridFull Time
NTT DATA
NTT DATA: Global provider of IT and business consulting services.
7+ YOEBachelor's in CS/Engineering,7+ years software development experience,5+ years Java Spring backend experience,web3 and asynchronous programming experience preferred,strong CS fundamentals and DevOps/tool familiarity.
Java, Spring, Web3J, Web3JS, Solidity, git, Jira, Jenkins, Helm Charts
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1mo
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Senior Backend Developer
New York, New York, United States
HybridFull Time
Galaxy Digital
Galaxy DigitalToronto Stock Exchange: GLXY: Financial services and infrastructure for the digital asset economy.
7+ YOE7+ years software engineering experience; strong Golang and distributed systems skills; experience with Ethereum/blockchain, cloud-native infrastructure (AWS, Kubernetes, Helm, Flux), testing, and working in remote/asynchronous teams.
Golang, Ethereum, AWS, Kubernetes, Helm, Flux, GitOps, Claude Code, Model Context Protocol (MCP), Rust, Solidity, Headspace
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1mo
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Junior Quant Developer
New York, New York, United States
$105k-$120k/yr HybridFull Time
Franklin Templeton
Franklin TempletonNYSE: BEN: Global investment firm providing asset and wealth management services.
0+ YOEBachelor's in computer science (or related), 0–1 years professional programming experience, solid CS fundamentals, knowledge of data structures/algorithms, proficiency in C#, Python, SQL, Microsoft Visual Studio, and source control (Git).
C#, Python, SQL, SQL Server, Microsoft Visual Studio, Git, Azure, CANVAS®
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1mo
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Quantitative Developer (USA)
Stamford, Connecticut, United States
$175k-$200k/yr OnsiteFull Time
Trexquant
Trexquant: Quantitative hedge fund developing systematic trading strategies.
BS/MS/PhD in a STEM field; strong C++ engineering skills; solid finance and options expertise; experience with options market data, implied volatility surfaces, options pricing, and backtesting infrastructure; strong problem-solving and teamwork.
C++
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4w
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Senior Java Backend Engineer
Atlanta or New York City
HybridFull Time
Miratech
Miratech: Provides digital engineering and IT consulting for global enterprises
8+ YOE8+ years Java development (8/11/17+), strong Spring Boot/Spring MVC/Hibernate experience, microservices and REST API design, SQL proficiency, solid OOP/data structures/algorithms, distributed systems and performance optimization.
Java, Spring Boot, Spring MVC, Hibernate, SQL, C++, Terraform, Ansible, REST
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1mo
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Senior Security Engineer
New York, New York, United States
$130k-$163k/yr OnsiteFull Time
CertiK
CertiK: Provides security audits and monitoring for blockchain and smart contracts.
Master's in Security Informatics/Cybersecurity; strong knowledge of solidity; Web3 security; penetration testing and security reviews; cloud platforms; Python/JavaScript.
Solidity, Java, JavaScript, Python, C, C++, Go, AWS, Azure, GCP
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2mo
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Software Engineer, Realtime
Austin or New York City
$150k-$187k/yr HybridFull Time
Cloudflare
CloudflareNYSE: NET: Provides security and performance services for internet properties.
Experience building large-scale distributed systems, solid CS fundamentals, proficiency in a modern systems language (Rust or Go), and collaboration and research skills for realtime systems.
Rust, Go, WebRTC, MoQ
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