Backend Engineer in New York

What we do:

Creating and managing pre-approved instructions that allow assets to be moved to a pre-specified destination at a future date, even if the wallet is no longer able to sign transactions. Also providing immediate keyless recovery and threat response, without ever taking custody of your assets or touching your private key.

We are seeking a Senior Backend Engineer with 5-6 years of experience to join our fast-paced and dynamic team. The ideal candidate thrives in challenging environments, is highly adaptable, and has a proven ability to deliver under pressure. If you’re passionate about backend systems, microservices, and blockchain technology, and you excel in startup environments, we’d love to speak with you.

This position is an onsite position in NYC

At this time we can only hire US citizens or Green card holders.

Blockchain experience is a MUST

About the Role: System Development: Design, develop, and maintain...

AscendEx is a well-recognized global cryptocurrency trading platform. Currently, we are looking for a junior backend developer to join our global team and build out the high-performance, low latency, robust, and scalable core trading system.

Responsibilities:

- Review designs, document technical specifications, and provide time estimates for implementing features/fixes.

- Design, develop, and maintain highly performant, reliable, scalable, and secure backend systems and server side logic.

- Write high-performance, reusable, modular code along with automated tests.

- Maintain a close working relationship with a geographically distributed development team in an

evolving agile environment.

- Follow common design patterns, architectural practices and development methodologies.

- Identify and resolve performance issues to optimize for speed.

Requirements

- 2-3 years of professional work experience in a...

Career Renew is recruiting for one of its clients a Backend Engineer (Senior / Staff) - Crypto - this is an onsite position in New York.

Our API powers the home tabs, explore tabs, and push notifications of the majority of the wallet apps in the industry (Coinbase Wallet, MetaMask, Zerion, OKX Web3 Wallet, and more) with personalized transaction recommendations: mints, claims, quests, dapps, swaps, and more. It’s “onchain for you” - like Netflix and Spotify’s home tabs, but with things to do onchain instead of movies or music.

Who we are

We already drive 5% of our wallet partners’ transacting users, and our mission is to drive 5% of all onchain GDP. Our founders have been working together in crypto for five years and in the company for two years, and we are backed by great funds. We work on hard and interesting scaling and data problems, and we get to help everyone in crypto: from users to wallets to protocols to chains to...

What is Oppizi?

Oppizi is the first major multi-channel player in offline performance marketing. We’ve built technology that enables tracking, scaling, and optimization of offline marketing. We offer five channels: Hand-to-hand (in people’s hands), Door-to-Door (in people’s mailboxes), Direct Mail (in people’s mailboxes via the national post service), Door Hangers (by leaving them on the doorknobs of residential properties or on their cars), and Sampling (by providing the target audience with relevant products). We operate in 10 countries, with the main ones being Australia, New Zealand, France, the UK, the US, and Canada. We are very privileged to work with flagship accounts like Uber, DoorDash, Getaround, DiDi, Deliveroo, and many others.

Job description

Job type - Full-time 

Work type - Remote position

Seniority level - Senior

Work experience - 10+ years as a Senior Developer / DevOps Engineer / Backend Software Engineer or...

Career Renew is recruiting for one of its clients a Senior Backend Engineer - Crypto - this is a hybrid role in New York with the flexibility to come to the office 3 times a week.

Our backend team is at the forefront of DeFi security and data management. We’re developing decentralized systems with a focus on low-latency output, enabling DeFi protocols to incorporate dynamic, risk-reducing data directly within their smart contracts in real time.

While blockchain experience is not required, we’re looking for top-tier engineers who are passionate about solving complex problems and eager to innovate in the fast-evolving blockchain space.

Requirements

5+ years of professional experience in Infrastructure/Backend Services.

Experience working with impressive / complex products.

Strong backend experience with Go (preferable), Rust, C++ or similar.

Experience in DeFi or Blockchain Technology is strongly...

AminoChain is seeking a highly skilled Staff Backend Engineer with expertise in distributed systems to join our talented development team. As a Staff Backend Engineer, you will play a crucial role in architecting, designing, and implementing distributed systems that power our decentralized protocol infrastructure for healthcare applications. You will work closely with cross-functional teams to ensure the scalability, reliability, and performance of our platform.

At AminoChain, our mission is to build the future of trust in science and healthcare, creating a world where patients are at the heart of biomedical research outcomes. We're developing the world’s first decentralized protocol infrastructure for healthcare applications, connecting hospitals, biobanks, and bio-pharma companies to unlock the full potential of donated biological samples.

Responsibilities

• Design, develop, and maintain backend systems and services using Node.js and other...

Career Renew is recruiting for one of its clients a Backend Engineer - DeFi - this is a hybrid role in New York.

We believe in an open and flat structure. You will be able to grow into the role that most aligns with your goals. Our team members at all levels have the freedom to explore ideas and impact the roadmap and vision of our company.

What you'll do

• Be a critical part of the technical and product roadmap
• Contribute to our backend and integrate a variety of third party services
• Scale our infrastructure to millions of end users globally
• Rapidly ship new capabilities to our customers
• Help drive the architectural decisions of a rapidly evolving product
• Interact with smart contracts across multiple chains

Requirements

Based in NY and happy to work hybrid. (office based in Manhattan near financial district)

Min 5 years...

About Cypris:

At Cypris, we're building the single ecosystem for global innovation data. Cypris is an AI-powered research tool that centralizes data sources like scientific papers, global patents, market news, and company data into one platform. Cypris arms users with access to unique insights from 500M+ global data points, answering key questions about their market, competitors, core technologies & more to support new product development, commercial strategy & accelerate global innovation.

We’re connecting R&D teams to the global innovation landscape like the Bloomberg Terminal did for the finance world & Pitchbook for venture capital. Current users include leading R&D & innovation teams at mid-size to Fortune 100 companies operating in emerging markets like aerospace, genomics, cancer research, autonomous vehicles, and more.

About the role: 

We're looking for a Backend Engineer to join...

Vitally is growing, and our platform is growing too! We are looking for a Sr. Backend Engineer for our Core group to help the platform grow as we acquire more customers. This role will be focusing on advancing and creating new integrations.

We'd love to find someone with these traits to help us scale as we add more and more customers:

• You are an exceptional engineer with excellent problem-solving skills
• You have a solid understanding of relational databases (we use Postgres) and can write performant queries and optimize indexes
• You have a deep understanding of architectural patterns of high-scalability distributed systems
• You have extensive experience with multiple software systems design tools and languages
• You have experience evaluating forms and processes for software systems testing and methodology, including writing and execution of test plans, debugging, and testing scripts and tools.
• You have...

The Staff Software Engineer is a seasoned professional with at least 10 years of experience in software development. Specialized in finance or crypto within the technology industry, this individual excels in leading problem-solving, driving coding excellence, ensuring comprehensive testing, and adopting scalable and secure software implementations for solutions in areas like trading, swapping, regulatory compliance, fraud detection, automation, and more.

Who we are

Paxful is a people-powered marketplace for moving money from anywhere, to anyone. With over 12 million users across 170+ countries, Paxful offers access to crypto and local currencies using more than 450 payment methods.

Requirements

• Past experience within the fintech sector, or understanding of financial regulations, compliance, and security best practices.
• Excellent analytical, critical thinking, and problem-solving skills in financial...

The Staff Software Engineer is a seasoned professional with at least 10 years of experience in software development. Specialized in finance or crypto within the technology industry, this individual excels in leading problem-solving, driving coding excellence, ensuring comprehensive testing, and adopting scalable and secure software implementations for solutions in areas like trading, swapping, regulatory compliance, fraud detection, automation, and more.

Who we are

Paxful is a people-powered marketplace for moving money from anywhere, to anyone. With over 12 million users across 170+ countries, Paxful offers access to crypto and local currencies using more than 450 payment methods.

Requirements

• Past experience within the fintech sector, or understanding of financial regulations, compliance, and security best practices.
• Excellent analytical, critical thinking, and problem-solving skills in financial...

Looking for a place where you, your skills, and your contribution are valued and recognized? Somewhere you can grow not just as a professional, but also as an individual? You've come to the right place. At IT Labs, we take care of our own - and we mean it. If you love to code, can easily prioritize and analyze work, and keep one eye on the bigger picture and business needs - then you're the Senior Backend Engineer we're looking for.

As a Senior Backend Engineer, you will be tasked with ensuring we meet the clients’ needs. We expect that you will use your full knowledge and skills to design, build, and maintain reliable lines of code, but also help develop the strategic plan for projects, and leave your mark to one of our most complex and enterprise projects.

At IT Labs, learning is a process that never stops and we much appreciate a positive attitude towards learning new things, proactivity and innovative approach when facing challenges, and above all - the will...

About Us

We’re on a mission to transform spoken communication for individuals, teams and organizations of any size. Meetings may be our most information-rich channel for work, but suffer from a lack of structure and documentation. At Supernormal, we’re solving this problem with focus, design and craft.

We’ve been working on this since 2019 and have customers like Snap, Salesforce, Replay, Gitcoin, Pinterest and thousands more on this journey with us. Today, we are growing rapidly and are excited for new teammates to join who are the best at what they do. We’re passionately building a team that is as diverse and creative as the millions of people we serve worldwide.

Supernormal is a remote first company and does not require co-location. We have annual team retreats and gather several times a quarter. 

About the role

Back-end engineers at Supernormal own projects large and small from start to finish. As a backend...

Looking for a place where you, your skills, and your contribution are valued and recognized? Somewhere you can grow not just as a professional, but also as an individual? You've come to the right place. At IT Labs, we take care of our own - and we mean it. If you love to code, can easily prioritize and analyze work, and keep one eye on the bigger picture and business needs - then you're the Senior Backend Engineer we're looking for.

As a Senior Backend Engineer, you will be tasked with ensuring we meet the clients’ needs. We expect that you will use your full knowledge and skills to design, build, and maintain reliable lines of code, but also help develop the strategic plan for projects, and leave your mark to one of our most complex and enterprise projects.

At IT Labs, learning is a process that never stops and we much appreciate a positive attitude towards learning new things, proactivity and innovative approach when facing challenges, and above all - the will...

Company Overview: We are a dynamic and innovative technology company dedicated to transforming the decentralized web. Our mission is to develop cutting-edge decentralized applications (dApps) that leverage blockchain technology to empower individuals and organizations. We are seeking a talented and experienced Backend Engineer to join our team, bringing expertise in NodeJs server frameworks like Nest.js, SQL Databases, Web3 knowledge of EVM.

This is a 3-6 month contract, with the possibility to continue longer. If you are a skilled Backend Dev looking for an opportunity in the web3 space, here's your chance!

Key Responsibilities:

1. Backend Development:

• Design, develop, and maintain backend systems, ensuring the reliability, scalability, and security of our applications.
• Collaborate with cross-functional teams to translate frontend requirements into efficient and effective server-side functionality.
...

Looking for a place where you, your skills, and your contribution are valued and recognized? Somewhere you can grow not just as a professional, but also as an individual? You've come to the right place. At IT Labs, we take care of our own - and we mean it. If you love to code, can easily prioritize and analyze work, and keep one eye on the bigger picture and business needs - then you're the Senior Backend Engineer we're looking for.

As a Senior Backend Engineer, you will be tasked with ensuring we meet the clients’ needs. We expect that you will use your full knowledge and skills to design, build, and maintain reliable lines of code, but also help develop the strategic plan for projects, and leave your mark to one of our most complex and enterprise projects.

At IT Labs, learning is a process that never stops and we much appreciate a positive attitude towards learning new things, proactivity and innovative approach when facing challenges, and above all - the will...

About the role

We're looking for Backend Engineers to work on our geocoding and routing infrastructure. HorizonDB, our next-gen proprietary geospatial database written in Rust, powers our geocoding and text search workloads. HorizonDB can process 2000 requests per second per core with a p50 latency of 1ms. Over the past year, the Radar SDK has been installed on over 100M devices worldwide and our steady state traffic is 10,000 qps.

The stack:

HorizonDB is written in Rust using RocksDB, FSTs and Tantivy.

Our data pipelines are written in Airflow and Scala Spark.

We use Terraform to manage our infrastructure.

Most engineers are in the on-call rotation.

We sponsor OpenStreetMaps, MapLibre and OpenAddresses.

How we work:

Most of our engineering team are former technical co-founders or former Radar interns from schools like Waterloo and CMU. Most engineers at...

Looking for a place where you, your skills, and your contribution are valued and recognized? Somewhere you can grow not just as a professional, but also as an individual? You've come to the right place. At IT Labs, we take care of our own - and we mean it. If you love to code, can easily prioritize and analyze work, and keep one eye on the bigger picture and business needs - then you're the Senior Backend Engineer we're looking for.

As a Senior Backend Engineer, you will be tasked with ensuring we meet the clients’ needs. We expect that you will use your full knowledge and skills to design, build, and maintain reliable lines of code, but also help develop the strategic plan for projects, and leave your mark to one of our most complex and enterprise projects.

At IT Labs, learning is a process that never stops and we much appreciate a positive attitude towards learning new things, proactivity and innovative approach when facing challenges, and above all - the will...

We are looking for a backend engineer to join our team and work on building foundational financial products for immigrants to the United States. Our vision is to help immigrants establish themselves financially in the U.S. and build wealth through our core products of ITIN registration and personal financial services.

You will help us execute on our vision by building the backend that powers our consumer mobile app and internal web application. You will build out new customer-facing products and features, contribute to our CI/CD and platform infrastructure, and improve the reliability and observability of our backend services.

We are a small team, mostly based in NYC. We work together onsite in a beautiful office in Union Square which helps us collaborate and move quickly to serve our customers.

Requirements

• You have 4+ years of software development experience building web products.
• You have strong experience with data...

Founded in 1994 and celebrating 30 years in business, Mindex is a software development company with a rich history of demonstrated software and product development success. We specialize in agile software development, cloud professional services, and creating our own innovative products. We are proud to be recognized as the #1 Software Developer in the 2023 RBJ's Book of Lists and ranked 27th in Rochester Chamber’s Top 100 Companies. Additionally, we have maintained our certification as a Great Place to Work for consecutive years in a row. Our list of satisfied clients and #ROCstar employees are both rapidly growing— Are you next to join our team?

Mindex’s Software Development division is the go-to software developer for enterprise organizations looking to engage teams of skilled technical resources to help them plan, navigate, and execute through the full software development lifecycle.  

We seek a Java Backend Engineer to join our...

About Us

Radar is location infrastructure for every product and service. Companies like Vercel, Panera, and T-Mobile use Radar's geofencing SDKs and maps APIs to power location-based experiences across hundreds of millions of devices worldwide.

Founded in 2016, Radar is headquartered in New York, NY. Radar has raised $85.5M from leading venture capital firms including Accel and Insight Partners.

About the role

We're looking for a Product Engineer to build high throughput data intensive infrastructure. Over the past year, the Radar SDK has been installed on over 100M devices worldwide and our steady state traffic is 10,000 qps. Our SDKs are open source (Android) (iOS), and interface with location services to expose new primitives to make location data simple.

How we work:

Most of our engineering team are former technical co-founders or former Radar interns from schools like Waterloo and CMU. Most...

What are we looking for?

We are looking to add you to our Engineering team at Valstro. We aim to create a manageable, scalable, and cost-efficient service that fully embraces modern software development tools and methods.

Who are we?

Valstro is a newly formed FinTech partnership working to deliver next-gen, Cloud-First, trading solutions to global, multi-asset class institutional clients. You may call us a startup or a “baby enterprise.” Regardless of the term you prefer, we are a “people-first” company: all the value that we plan to bring to clients comes from the efforts of a collaborative, motivated and...

Everyrealm is looking for a Backend Engineer based in New York City to play an integral part in building and scaling our products.  

About Everyrealm

Everyrealm is a technology company that creates innovative solutions for avid social gamers, with offerings across a variety of categories, including identity, ranking, relationships, and events. We also publish community-driven video game titles. In addition, we manage three venture-style investment funds that invest in related businesses and technologies. We are a collaborative and multidisciplinary team with different backgrounds, working together to build new products that foster social connection in virtual worlds. We believe that bringing together individuals from different backgrounds and experiences creates a richer and more inclusive work environment, which ultimately leads to more innovative products and ideas.

Responsibilities

...

Singuli, Inc. is looking for a Senior Backend Engineer to contribute to the development and improvement of our inventory optimization platform. As a Senior Software Engineer you are expected to have a strong understanding of scalable and reliable systems that can handle large amounts of data without breaking a sweat. We process 100s of millions of messages per month and generate terabytes of forecasts.

Responsibilities

• Collaborate with other engineering, data science and product teams to drive improvements in Singuli's platform
• Write clean, efficient, and reliable code with a focus on maintainability and scalability
• Design and implement RESTful APIs using modern best practices
• Help build and maintain highly available and scalable cloud infrastructure
• Ensure high code quality and automated testing for all codebases
• Monitor and troubleshoot production issues and provide support, as necessary
...

Are you ready to join a rapidly growing life science company where new ideas are celebrated, and employee development is a priority?

Then meet HistoWiz! Since 2013, we have been helping our customers at leading pharma, biotech, and academic institutions advance scientific research and discoveries through the automation of histology and digital pathology solutions. Based in New York City, we have funding from some of the leading life science venture capital groups.

We are seeking a talented and experienced Senior Backend Engineer to join our team. The successful candidate will be responsible for developing, implementing, and maintaining software applications that meet our team's and clients' needs. The candidate must have a strong understanding of the software development lifecycle and the ability to understand complex software systems. The ideal candidate enjoys solving complex problems, has excellent communication skills, team building...