Sign up to access all features of our service.
  • Job search
  • Favorites
  • Create a CV
    New
  • Salaries
  • Subscriptions

Senior Back-End Engineer

3B Staffing LLC

Senior Back-End Engineer



Location: Denver, CO or NYC (On-site)

Workplace Type: On-site
GC and USC


Overview


We're looking for a talented and dedicated Senior Back-End Developer focused on low-latency, real-time application development to join a high-performing engineering team. This is a chance to work on complex, mission-critical systems in a fast-paced, high-throughput environment.

Responsibilities

  • Design, develop, test, deploy, and maintain scalable, high-performance backend applications using Java.
  • Participate in the complete software development lifecycle including design, implementation, testing, and production support.
  • Translate business and technical requirements into well-architected backend solutions.
  • Collaborate closely with global teams including product managers, architects, and other developers.
  • Perform code reviews and contribute to software design and architecture discussions.
  • Provide documentation and ongoing support for deployed systems.
Experience Required
  • 7+ years of hands-on development in Java , with strong expertise in Spring , Spring Boot , RESTful APIs , and Microservices architecture.
  • Proficiency in SQL and experience with relational databases .
  • Knowledge of Maven , Git , JUnit , and test-driven development practices.
  • Familiarity with CI/CD pipelines , Linux , and Bash scripting .
  • Understanding of security protocols such as SAML , encryption , certificates , and web security best practices .
  • Exposure to JSON , web services , and working within Agile/DevOps environments .
  • Nice to have: Experience with Keycloak and OpenSearch .
  • Strong analytical and problem-solving skills, with the ability to thrive in high-performance teams.
  • Bachelor's degree in Computer Science, Information Systems, or related field-or equivalent work experience.
Vacancy posted 5 days ago
Similar jobs that could be interesting for youBased on the Senior Back-End Engineer in New York, NY vacancy
  •  ...This is a senior, delivery-focused engagement on a strategic multi-year programme. It suits an engineer who is proactive about building deep domain...  ...quality of your deliverables end-to-end rather than handing...  ...principles. You should be able to back this up with concrete... 
    Senior
    Full time
    Work at office
    Local area
    Flexible hours
    Shift work

    Grid Dynamics

    New York, NY
    2 days ago
  •  ...infrastructure you need to build a real demand engine. Clay for enrichment, n8n for workflows,...  ...with the Chief of Staff, owned by you end to end. The research, structuring, and execution...  ..., direct access to the Chief of Staff and senior leadership, and a portfolio of projects... 
    Senior
    Shift work

    Abacum

    New York, NY
    4 days ago
  • Passionate about clean architecture and complex data problems, the full-time Senior Back-End Engineer will architect, design, and maintain core services for CRM and Marketing platforms while working remotely. Key responsibilities: Architect, design, and maintain core... 
    Senior
    Full time
    Remote work

    Virtual Vocations Inc

    New York, NY
    11 hours ago
  •  ...Bask Health Software Engineer As an engineer at Bask you will work directly with the CEO...  ...with real patient and care teams, and then back for systems and polish. AI is a default part...  ...We are looking for engineers who take end-to-end ownership, treat AI as a real collaborator... 
    Senior

    Bask Health

    New York, NY
    5 days ago
  • To support the development of innovative insurance solutions, the full-time Senior Back End Engineer will design, build, and maintain core services and infrastructure, ensuring platform performance and reliability in a remote work environment. Key responsibilities Design... 
    Senior
    Full time
    Remote work

    Virtual Vocations Inc

    New York, NY
    3 days ago
  •  ...in CRM Work with Solutions Engineering, Product and Leadership to shape...  ...what you hear in the market back into the roadmap What we need...  ...including running demos with senior buyers ~ Based in North...  ...creativity and energy to that end. Audacious Ambition: We dream... 
    Senior
    Contract work
    Work at office
    Remote work
    Shift work

    Abacum

    New York, NY
    4 days ago
  • $25k - $40k

    ## Job OverviewQuanata is hiring a remote candidate for Senior Back End Engineer [Remote-US]. This is a full time position. Work location: USA.The role typically involves technologies such as TypeScript, GraphQL, Kubernetes, CI/CD, Kafka, Python.## Key Responsibilities... 
    Senior
    Remote job
    Extra income
    Full time
    Local area
    Work from home
    Home office
    Flexible hours

    Far Coder

    New York, NY
    2 days ago
  •  ...re looking for the person to own its technical direction and reliability — and grow the team that runs it. This is a high-impact engineering role with meaningful equity, real ownership, and direct influence on how Lawfully scales. What you'll do Set the architecture... 
    Senior
    Full time

    Lawfully

    New York, NY
    2 days ago
  • $160k - $240k

     ...modern software and financial solutions for healthcare providers across the U.S. Backed by experienced founders and leading investors, the company is expanding rapidly and looking for engineers who thrive in a fast-paced, high-ownership environment where they can have a... 
    Senior
    Full time
    Work at office
    Remote work

    Strategic Employment Partners (SEP)

    New York, NY
    1 day ago
  • United States Digital Space LLC is seeking a hands-on Senior .NET Engineer to design, build, and deliver scalable enterprise SaaS applications....  ...architectural challenges, develop modular backends, and own end-to-end code quality in a modern AI-assisted workflow. You will... 
    Senior
    Remote job

    United States Digital Space LLC

    New York, NY
    3 days ago
  • $160k - $180k

     ...Description Senior Backend Engineer Full-time New York, NY, US Exclusive confidential search - details shared with qualified applicants. Benefits You'll Love ~ Equity / ownership upside Become a Key Player as a Senior Backend Engineer... 
    Senior
    Hourly pay
    Full time

    NextDeavor

    New York, NY
    2 days ago
  •  ...their communities at scale. We're a high-growth, venture-backed startup supported by the co-founders of Reddit and Plaid...  ...influence. You’ll join a small but mighty team where engineers own systems end-to-end — not tickets. You’ll work directly with founders, shape... 
    Senior

    Visible Hands

    New York, NY
    5 days ago
  • $190k - $235k

     ...interviewing, a best-in-class ATS (applicant tracking system), and the most powerful job search experience in the world. As a senior backend engineer, you’ll be responsible for leading engineering efforts across both our job-seeker and company experiences. You’ll be... 
    Senior

    Sarah Smith Fund

    New York, NY
    3 days ago
  •  ...the right setting. Role Description We’re seeking a Senior Backend Engineer with a passion for systems architecture, data modeling, and...  .... In this role, you’ll architect and implement features end-to-end across our backend services and infrastructure, ensuring... 
    Senior
    Work at office

    Tennr

    New York, NY
    5 days ago
  •  ...just answer calls—they complete workflows end-to-end, ensuring patients never go...  ...Chairs and Ophelia) and an ex-Amazon Alexa engineer who led AI/ML teams at Salesforce. We've...  ...systems and architecture with the CTO and a senior engineer. Onsite Team Day (Half Day,... 
    Senior

    Anaphero: Automating patient-facing tasks. Happier clinician...

    New York, NY
    5 days ago
  •  ...The Role Raydar is recruiting for this role on behalf of our client. Serve as the lead backend engineer for an early-stage software platform, owning system design, reliability and delivery across a range of high-stakes services. The work spans real-time data processing... 
    Senior
    Full time
    Work at office
    Immediate start

    Healthcare Technology Corp

    New York, NY
    4 days ago
  •  ...Senior Backend Engineer WHY THIS ROLE EXISTS Our client is building AI technology to make healthcare accessible and free for everyone....  ...structure with direct collaboration with company leadership End to end ownership from concept to production AI assisted... 
    Senior

    NxT Level

    New York, NY
    5 days ago
  •  ...A financial data platform is looking for a Backend Engineer to help turn complex, unstructured financial documents into data that powers real client decisions. This role sits at the intersection of LLMs, document parsing, and backend architecture, with the chance to build... 
    Senior

    Mission Staffing

    New York, NY
    4 days ago
  •  ...by a Navy veteran and Columbia CS grad, Skape is a venture-backed startup based in New York. We're live, growing fast, and backed...  ...a technology-first approach. About the Role As a Senior Backend Engineer, you'll design and build the systems that power Skape's... 
    Senior
    Immediate start
    Remote work

    skape Industries LLC

    New York, NY
    1 day ago
  •  ...as a category. We created it. We are backed by Andreessen Horowitz (a16z) and other world...  .... You will be one of our first engineers, shaping the architecture of a new category...  ...speed of execution and on owning our work end to end. This is a full-time hybrid role:... 
    Senior
    Full time
    Work at office
    Remote work
    3 days per week

    ZeroDrift

    New York, NY
    4 days ago
  • $170k - $210k

     ...technology team builds the technology solutions that power the end-to-end business operation of an industry-leading custom rug...  ...expectations before and after their rug purchase. As a Senior Backend Engineer, you will be a foundational member of the engineering team building... 
    Senior

    Ernesta Home, Inc

    New York, NY
    4 days ago
  •  ...Senior Backend Software Engineer Duration: one year C2c Rate: $70 - 80/hr Hybrid: Location : 2, Broadway , NY, NY Position Overview The Senior Backend Software Engineer / Consultant is a hands-on engineer responsible for developing... 
    Senior
    Afternoon shift

    Anveta

    New York, NY
    2 days ago
  • $180k - $226k

     ...internet. We’re looking for an enthusiastic, self‑motivated Senior Backend Engineer to help us build the next generation of financial products....  ...to turn requirements into products and lead the execution end to end. Provide guidance and technical leadership to peers... 
    Senior
    Full time
    Remote work
    Home office

    Uniswap

    New York, NY
    4 days ago
  • $150k - $250k

     ...Ellipsis Labs is a profitable, venture-backed New York-based startup building differentiated products and infrastructure in...  ...Labs office in New York City. Ellipsis Labs is seeking a Senior Backend Engineer to join our team. As an early-stage startup, we appreciate... 
    Senior
    Work at office

    Ellipsis Labs

    New York, NY
    3 days ago
  •  ...Senior Backend Engineer New York, NY About Daylight Daylight is the decentralized energy company. We're building a protocol that converts...  ...believe in a future where communities power themselves. Backed by a16z, Framework, and other industry-leading investors,... 
    Senior
    Work at office

    Daylight Corp

    New York, NY
    4 days ago
  • $500 per month

     ...Giga Backend Engineer Giga has recently raised a $61M Series A and is working with Fortune...  ...asked to execute. You'll own problems end-to-end: figuring out the right approach,...  ...in lieu of formal customer APIs As a senior engineer, you'll be expected to make sound... 
    Senior

    Giga AI, Inc.

    New York, NY
    5 days ago
  • £50k - £70k per year

     ...the globe, we value and emphasise clear, continuous and transparent communication as highly as technical skills. As our Senior Backend Game Engineer, you will be responsible for designing, developing, and maintaining scalable backend systems and services that support our... 
    Senior
    Remote work
    Worldwide

    Companion Group

    New York, NY
    4 days ago
  •  ...revolutionize what & how they produce. We are backed by leading VC funds across both the US...  ...for a highly skilled and adaptable Senior Backend Engineer to help build and expand the core...  ...platform and data engineers to deliver end-to-end features Lead projects from design... 
    Senior
    Full time

    Deployferry

    New York, NY
    4 days ago
  •  ...Senior Backend Engineer | FinTech Data Platform We're partnering with an innovative and rapidly growing technology business that is transforming how financial data is extracted, structured, and delivered through cutting-edge AI, NLP, and machine learning technologies... 
    Senior
    Work at office
    Remote work

    WSS Associates

    New York, NY
    3 days ago
  • $166.6k - $208.3k

     ...through the skies. It embodies the elegance of simplicity in engineering, transforming the demanding task of controlling an aircraft into...  ...engineering group is growing and we’re looking to hire senior backend engineers . We’re a team of pragmatic, product-minded... 
    Senior
    Remote work
    Visa sponsorship

    Mercury

    New York, NY
    2 days ago

Do you want to receive more vacancies?

Subscribe and receive similar vacancies to Senior Back-End Engineer. Be the first to apply!