Principal Blockchain Engineer Job at Fidelity Investments (Jersey City)

Principal Engineer - Mortgage Servicing

To drive technical excellence and innovation by leading the design and implement...

Location

India , Pune

Salary:

Not provided

Barclays

Expiration Date

Until further notice

Requirements

Provision of guidance and expertise to engineering teams to ensure alignment with best practices and foster a culture of technical excellence
Contribution to strategic planning by aligning technical decisions with business goals, anticipating future technology trends, and providing insights to optimize product roadmaps
Design and implementation of complex, scalable, and maintainable software solutions, considering long-term viability and business objectives
Mentoring and coaching to junior and mid-level engineers to foster professional growth and knowledge sharing, elevating the overall skillset and capabilities of the organization
Collaboration with business partners, product managers, designers, and other stakeholders to translate business requirements into technical solutions and ensure a cohesive approach to product development
Innovation within the organization by identifying and incorporating new technologies, methodologies, and industry practices into the engineering process

Job Responsibility

Provision of guidance and expertise to engineering teams to ensure alignment with best practices and foster a culture of technical excellence
Contribution to strategic planning by aligning technical decisions with business goals, anticipating future technology trends, and providing insights to optimize product roadmaps
Design and implementation of complex, scalable, and maintainable software solutions, considering long-term viability and business objectives
Mentoring and coaching to junior and mid-level engineers to foster professional growth and knowledge sharing, elevating the overall skillset and capabilities of the organization
Collaboration with business partners, product managers, designers, and other stakeholders to translate business requirements into technical solutions and ensure a cohesive approach to product development
Innovation within the organization by identifying and incorporating new technologies, methodologies, and industry practices into the engineering process

What we offer

Competitive holiday allowance
Life assurance
Private medical care
Pension contribution

Fulltime

Principal Rust Engineer

As a Principal Software Engineer on the DeFi Yield Gen Platform team, you’ll get...

Location

United States , Jersey City; Merrimack; Westlake

Salary:

107000.00 - 216000.00 USD / Year

Fidelity Investments

Expiration Date

Until further notice

Requirements

Bachelor's degree in computer science or related field required
8+ years' of progressive experience in software engineering using programming languages like RUST and Python
Ability to build reliable software that can withstand unreliable environments
Experience building unit and integration tests
Experience building and deploying applications using continuous integration pipelines and automated deployment tools such as Jenkins Core
Possess critical thinking skills to build end-to-end solutions
Passionate and committed to learning new things and developing with the latest technologies and frameworks
Work well in both a small agile team and independently, having a strong user focus
Strong analytical and communication skills and the ability to handle multiple tasks at any given time
Participate in engineering practices such as code and design reviews, environment strategy, and build and deployment pipelines

Job Responsibility

Design and implement highly optimized, low-latency software for automated trading systems and analytical platforms
Enhance and maintain the DeFi trading platform, ensuring robustness and scalability
Collaborate with quantitative researchers and traders to deliver custom software solutions for developing strategies for trading Digital Assets
Provide ongoing support for trading systems and research platforms
Mentor engineers on the best practices for Software development

What we offer

Comprehensive health care coverage and emotional well-being support
Market-leading retirement
Generous paid time off and parental leave
Charitable giving employee match program
Educational assistance including student loan repayment, tuition reimbursement, and learning resources to develop your career

Fulltime

Principal DevOps Engineer

We are looking for a Senior DevOps engineer to build and maintain the infrastruc...

Location

United Kingdom , London

Salary:

Not provided

Plasma

Expiration Date

Until further notice

Requirements

10+ years of operating distributed systems at scale, ideally at companies where uptime was existential: big tech, HFT, exchanges, or blockchain infrastructure
system design depth: architected platforms for fault tolerance
fluent in Kubernetes, Terraform, and cloud infrastructure
led reliability transformations before, taking production systems from 'good enough' to 'financial-grade'
lead through influence, not authority

Job Responsibility

Own the reliability roadmap: lead the architectural evolution of our production systems toward higher availability, graceful degradation, and predictable failure recovery
Redesign for resilience: identify brittleness in existing infrastructure and drive systematic improvements, such as chaos engineering, redundancy patterns, and blast-radius reduction
Elevate observability: transform our monitoring from system health to risk awareness, ensuring we catch issues before they escalate to incidents
Strengthen operational rigour: improve our runbooks, incident response protocols, and post-mortem practices to compound reliability gains over time
Mentor and uplift the team: share hard-won lessons from operating at scale, raise the collective bar, and nurture a culture of ownership
Partner across engineering: work with protocol, client, and backend teams to bake reliability in at the design phase

What we offer

Above market salary plus token compensation
Premium health insurance for you and your family fully covered by Plasma
Monthly wellness budget, whether for the gym, therapy, sauna & massage
A beautiful London HQ with gym access and daily food
All the tools and tech you need to operate at your best
Visa sponsorship and relocation support if you are joining the London office from abroad

Fulltime

Principal Software Engineer

Join a stellar team of leaders and experts in blockchain technology, cryptograph...

Location

United States , New York

Salary:

220000.00 - 300000.00 USD / Year

Assessfirst

Expiration Date

Until further notice

Requirements

10+ years of backend software engineering, with leadership in fintech or blockchain
Mastery of TypeScript plus one or more systems languages (Rust, Go, C++)
Proven track record building scalable APIs, infrastructure, and developer platforms
Deep expertise with databases (PostgreSQL, DynamoDB, NoSQL) and cloud (AWS)
Strong knowledge of microservices, CI/CD pipelines, observability, and SSDLC
Familiar with applied cryptography, PKI, and secure backend architectures
Exceptional problem-solving, communication, and ability to influence technical direction

Job Responsibility

Lead the design and development of scalable, secure backend services and APIs
Define and evolve architecture for databases, microservices, and integrations
Own mission-critical projects end to end, from requirements to production and iteration
Troubleshoot and resolve complex performance and reliability challenges at scale
Drive improvements to CI/CD, observability, and engineering processes across teams
Collaborate with leadership to shape roadmap priorities and long-term technical vision
Mentor engineers, promote best practices, and represent Dfns in client discussions

What we offer

Healthcare and travel expenses
Flexible working hours
Open to full remote
Work from anywhere
Food service or stocked kitchen
Free food & snacks
Pet-friendly office
Equity: 150–300 stock options vested over 4 years
Equipment: MacBook Pro + essentials

Fulltime

Principal Solutions Engineer

Join a stellar team of leaders and experts in blockchain technology, cryptograph...

Location

United States , New York

Salary:

160000.00 - 220000.00 USD / Year

Assessfirst

Expiration Date

Until further notice

Requirements

10+ years in solutions engineering, forward-deployed engineering, enterprise integration
Track record of helping institutions or enterprises deploy mission-critical systems
Strong in TypeScript (or similar languages) with proven API experience (REST)
Deep knowledge of cloud platforms (AWS essential
GCP/Azure/Thales a plus), microservices, and serverless architectures
Skilled in troubleshooting complex issues and delivering under pressure
Solid understanding of enterprise security frameworks (ISO 27001, SOC 2, PCI DSS)
Excellent communicator, able to bridge technical and business conversations
Strong documentation, presentation, and demo skills
Knowledge of blockchain, custody, and financial workflows strongly preferred

Job Responsibility

Guide financial institutions and fintechs through seamless onboarding and integration
Build secure, scalable deployment pathways that bridge legacy and modern systems
Provide hands-on support: troubleshoot, fix, and build solutions alongside client teams
Collaborate with sales on technical proposals, demos, and RFP responses
Maintain and improve technical documentation and developer guides
Gather client feedback and translate insights into product and API improvements
Represent Dfns at conferences, workshops, and customer meetings

What we offer

Healthcare and travel expenses
Equity: 100-200 stock options vested over 4 years
Equipment: MacBook Pro + essentials
Flexible working hours
Open to full remote
Work from anywhere
Food service or stocked kitchen
Free food & snacks
Pet-friendly office

Fulltime

Principal - Software Engineering - Blockchain & Smart Contracts

As Ethereum Blockchain Smart Contract you will be part of the Asset Management T...

Location

India , Bangalore

Salary:

Not provided

Fidelity Investments

Expiration Date

Until further notice

Requirements

Designing, implementing, and supporting distributed blockchain-based enterprise solutions for the financial/banking/asset management domain
Designing, writing and building secure and gas-efficient smart contracts for Ethereum based applications/token standard like ERC20, ERC721, and ERC1400 using Solidity along with third party interfaces and various design patterns like Upgradeable Proxy Pattern
Deep expertise in solidity smart contracts, EVM internals and gas-efficient design patterns
Evaluate and integrate with multiple blockchain protocols, including both EVM and non-EVM ecosystems(Polygon, Solana, Stellar)
Building Defi protocols by implementing token standards, staking protocols, yield farming liquidity pools and cross-chain protocols (LayerZero, Wormhole etc.,)
Hand-on experience with tools/frameworks like OpenZepplin, Hardhat, Ganache, Truffles
Write comprehensive and automated tests (unit, integration and fuzz) using frameworks like Foundry, Hardhat, Truffle or Brownie
Hands-on with security audit process, threat modelling and formal verification processes. Integrate audit feedback into production code. Familiarity with security tools Slither, MythX, Echidna
Continuously improve code quality through profiling and gas cost optimization techniques
Integrating, interoperability, bridging between blockchain/distributed ledgers with external components. Expertise in Oracles integration with Blockchain using Chainlink oracles

Job Responsibility

Design and develop enterprise blockchain solutions for use across Asset Management BU
Advocating for and developing new enterprise business use cases across Fidelity

Fulltime

Principal Functional Back End Engineer

Join Our Team as a Principal Functional Back End Engineer at Modus Create! We ar...

Location

United States of America

Salary:

Not provided

Modus Create

Expiration Date

Until further notice

Requirements

Principal Level experience
Experience with Haskell, written Haskell professionally
Knowledge of advanced features of Haskell and ability to navigate a large codebase that uses them
Comfortable working on the core (consensus, ledger, APIs, testing, etc.) of a blockchain project
Interest in – and some experience of – open source community contributions
Passionate about Nix (or similar systems such as Guix)
Interest in declarative, reproducible builds, with experience in systems like Bazel, Buck2, or Meson
Fluent with the command line
Skilled in managing development pipelines, test automation, continuous integration, and cloud-based deployments
Knowledgeable in software architecture, design patterns, and development methodologies

Job Responsibility

Leading, mentoring, and coaching both clients and Modus teammates
Deep diving into customer needs and translating them into actionable requirements
Exploring new tech and continuously learning
Sharing your knowledge and participating actively in the community
Overlap with some EST hours daily is expected
Giving back through opportunities such as blog posts, open source contributions, and event speaking
Travel & connections during remote meet-ups
Teaching and learning by working in active teams on internal and external projects
Being a self starter with autonomy and proactivity
Client interaction representing Modus and our values

What we offer

Remote work with flexible working hours
Modus Global Office Programme: on-demand access to private offices, meeting rooms, coworking spaces and business lounges in locations in over 120 countries
Employee Referral Program
Client Referral Program
Travel according to client or team needs
The chance to work side-by-side with thought leaders in emerging tech
Access to more than 12,000 courses with a licensed Coursera account
Possibility to obtain paid certification/courses if they align with company goals and are relevant to the employee's role

Principal Functional Back End Engineer

Join Our Team as a Principal Functional Back End Engineer at Modus Create! We ar...

Location

Salary:

Not provided

Modus Create

Expiration Date

Until further notice

Requirements

Principal Level experience
Experience with Haskell, written Haskell professionally
Knowledge of advanced features of Haskell and ability to navigate a large codebase using them
Comfortable working on the core (consensus, ledger, APIs, testing, etc.) of a blockchain project
Interest in and some experience of open source community contributions
Passionate about Nix (or similar systems such as Guix)
Interest in declarative, reproducible builds, with experience in systems like Bazel, Buck2, or Meson
Fluent with the command line
Skilled in managing development pipelines, test automation, continuous integration, and cloud-based deployments
Knowledgeable in software architecture, design patterns, and development methodologies

Job Responsibility

Partner with cross-functional teams and provide strategic consulting, full lifecycle product development
Leading, mentoring, and coaching both clients and Modus teammates
Deep diving into customer needs and translating them into actionable requirements
Exploring new tech and continuously learning
Sharing your knowledge and participating actively in the community
Giving back through opportunities such as blog posts, open source contributions, and event speaking
Travel & connections during remote meet-ups
Teaching and learning by working in active teams on internal and external projects
Being a self starter with autonomy and proactivity
Client interaction representing Modus and our values while connecting directly with our clients

What we offer

Remote work with flexible working hours
Modus Global Office Programme: on-demand access to private offices, meeting rooms, coworking spaces and business lounges in locations in over 120 countries
Employee Referral Program
Client Referral Program
Travel according to client or team needs
The chance to work side-by-side with thought leaders in emerging tech
Access to more than 12,000 courses with a licensed Coursera account
Possibility to obtain paid certification/courses if they align with company goals and are relevant to the employee's role

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Principal Blockchain Engineer

Job Description

Job Responsibility

Requirements

Nice to have

What we offer

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