Full-stack Engineer Job at Sapien (NYC)

Principal Full Stack Cybersecurity Engineer

The Principal Full Stack Cybersecurity Engineer will work with software engineer...

Location

United States , Bellevue

Salary:

129400.00 - 233400.00 USD / Year

T-Mobile

Expiration Date

Until further notice

Requirements

Bachelor's Degree Computer Science or Engineering
7-10 years’ experience in full stack development experience including front end and back end
7-10 years designing database schemas, writing SQL
3+ years DevOps experience with infrastructure as code
4-7 years using cloud services from AWS, Azure or GCP
7-10 years technical engineering experience
1+ years coaching and mentoring team members
Expected to be able to setup a completely new full stack environment from scratch including build steps and backend infrastructure
Deep knowledge of at least one structured and one scripting language
Understands web protocols, how full stack applications operate and data flows

Job Responsibility

Design new infrastructure and monitor existing systems to ensure security compliance
Work with engineers to develop full-stack SW solutions with a focus on security
Advise engineering teams on security, compliance, and risk assessments
Interface with groups including Cybersecurity, application support, engineering ops, privacy
Perform security analysis of existing and new technologies and form recommendations on their use
Propose and implement improvements to enhance existing systems and processes
Lead the identification of security needs & recommends plans/resolutions
Implement, test, and monitor information security improvements
Leads information security reviews of Engineering projects and proposals
Executes security projects driven by groups both internal and external to Engineering teams

What we offer

Competitive base salary and compensation package
Annual stock grant
Employee stock purchase plan
401(k)
Access to free, year-round money coaches
Medical, dental and vision insurance
Flexible spending account
Paid time off
Up to 12 paid holidays
Paid parental and family leave

Fulltime

Senior Full-Stack Software Engineer

The Codified Controls team is revolutionizing how policies, standards, and contr...

Location

United Kingdom , London

Salary:

Not provided

Citi

Expiration Date

Until further notice

Requirements

Proven experience as a Full Stack Software Engineer in product teams
Strong Experience delivering Go, Python and React code to production
Experience working in an agile software development environment
Proven experience with distributed systems, event-driven architectures, container-based micro-services, distributed logs, SQL and NoSQL databases, and DevSecOps

Job Responsibility

Design, develop, and test software applications
Work closely with other team members to ensure that the software is developed and delivered on time and within budget
Set the standards for high quality software and great user experiences
Stay up to date on the latest software development trends and technologies
Ensure software platforms are compliant with Citi's security and Software Development Life Cycle processes
Work across teams to drive codified controls and an everything-as-code mindset
Support cultural change, instigating critical thinking about controls and processes and encouraging a culture of continuous improvement

What we offer

27 days annual leave (plus bank holidays)
A discretional annual performance-related bonus
Private Medical Care & Life Insurance
Employee Assistance Program
Pension Plan
Paid Parental Leave
Special discounts for employees, family, and friends
Hybrid working model (up to 2 days at home per week)

Fulltime

Senior Growth Full-Stack Engineer

Senior Growth Full-Stack Engineer role at Seamless.AI focusing on user activatio...

Location

United States

Salary:

Not provided

Seamless.AI

Expiration Date

Until further notice

Requirements

5+ years of experience as a full-stack engineer (startup or growth-focused environment preferred) with SaaS product
Strong proficiency in modern JavaScript/TypeScript (React.js, Node.js)
Proficiency with modern database technologies (PostgreSQL, Vector DBs, OpenSearch, DynamoDB)
Proficiency with Cloud architecture and scalability best practices, in particular AWS (Lambda, serverless, cloud-native services)
Hands-on experience with A/B testing platforms (GrowthBook, Optimizely, LaunchDarkly, etc.)
Familiarity with feature flag systems and controlled experiment rollout strategies
Experience with product analytics tools (Amplitude, Segment, Tableau)
Ability to translate growth hypotheses into technical experiments quickly and iteratively
Strong data-driven mindset with the ability to evaluate experiment outcomes statistically
Comfortable working in fast-moving, cross-functional growth teams

Job Responsibility

Collaborate with growth, product, and data teams to design and implement A/B tests and growth experiments focused on user activation
Build, deploy, and maintain full-stack features and experiment infrastructure (frontend + backend)
Implement and manage feature flagging systems to enable rapid testing and controlled rollouts
Work with GrowthBook (or similar experimentation platforms) to set up, track, and analyze experiments
Instrument and track user behavior in Amplitude and other analytics platforms to generate insights
Write clean, scalable, and maintainable code across the React frontend and Node.js backend
Monitor and evaluate experiment outcomes, providing actionable insights and recommendations
Balance speed of experimentation with engineering best practices, ensuring quality while moving quickly

Fulltime

Senior Full Stack Data Engineer

Senior Full Stack Data Engineer role in Citi's Chief Technology Office (CTO) Tec...

Location

India , Pune

Salary:

Not provided

Citi

Expiration Date

Until further notice

Requirements

Minimum of 8 years of proven experience in software development
Significant experience as a Data Engineer and Full Stack Developer
Strong proficiency in SQL for data querying, manipulation, and optimization
Experience with NoSQL databases, such as MongoDB
Expertise in designing and developing data pipelines for ingestion, transformation, and processing of large datasets
Deep understanding of multithreading, thread pools, Object-Oriented Programming (OOP) concepts, and design patterns
Demonstrated experience working in an Agile software development environment
Excellent communication, problem-solving, and analytical skills
Proficiency in at least one of the following programming languages: Java or Python
Strong knowledge of DevOps practices, including source control management (e.g., Git), Continuous Integration (CI), Continuous Delivery/Deployment (CD), and automated deployments

Job Responsibility

Design and develop scalable data solutions leveraging platforms such as Iceberg, Snowflake, Trino, or other modern data ecosystems
Design, build, and optimize robust Extract, Load, Transform (ELT) and Extract, Transform, Load (ETL) data pipelines
Collaborate effectively with domain experts, product managers, analysts, and data scientists to understand data requirements and deliver efficient data solutions
Enable advanced analytics and machine learning workflows by ensuring the delivery of high-quality, reliable, and timely data
Implement and manage CI/CD pipelines to automate data engineering workflows across both cloud and on-premises environments
Research, evaluate, and recommend the integration of open-source technologies into our data platform
Clearly communicate complex technical details, project progress, and challenges to both technical and non-technical stakeholders
Design, develop, and implement scalable full-stack applications using technologies such as JavaScript, ReactJS, NodeJS, Python, and SQL/NoSQL databases
Write clean, efficient, well-documented, and maintainable code, adhering to industry best practices

Fulltime

3D Full-stack Engineer

As a 3D Full-stack Engineer in Inter IKEA Range, you will be working on projects...

Location

Sweden , Malmö

Salary:

Not provided

IKEA

Expiration Date

Until further notice

Requirements

Deep understanding of computer graphics, offline and real-time as well as 3D asset pipelines
Significant experience with software product development with 3D/VFX workflow focus
General Knowledge of product development workflows from CAD (computer-aided design) utilizing tools such as Revit, SolidWorks, or CATIA to in depth understanding of 3D visualization, animation, and rendering processes, including 3D DCC´s (Digital Content Creation), V-Ray, Rendering queue management, and other key Software solutions
Good general understanding of 3D, CG and VFX pipelines, including asset creation, texturing, lighting, rigging and posing
Good understanding of Pixar´s USD (Universal Scene Description) and MaterialX node structure is a plus
A Platform and DevOps mindset towards securing operations of business-critical applications with a good understanding of Agile methodologies and experience working on Agile development teams
Educational Background: Degree in Digital Media, Interactive Media, Media Technology, Computer Science, or a related field

Job Responsibility

Design and develop code for both out of the box or custom build 3D applications, including Javascript, C#, C++ , Python to ensure timely delivery on agreed sprints and Epics
Support 3D-related business areas and product teams by translating user needs from business language into technical briefs for internal or external development and finally into code
Benchmark and analyze IT processes to identify development opportunities, ensuring alignment within the DevOps team and maintaining positive relationships with contractors, vendors and stakeholders
Work closely with various teams across IKEA to ensure our digital strategies are aligned, integrated and support the broader goals of the company
Act as a technical expert when dealing with third party suppliers and as a key developer amongst others for our core 3D solutions

What we offer

Working with modern technologies and frameworks
Opportunity to create software products that are easy to use, visually stunning, and accessible
Team that values innovation and creativity
Fun and celebratory work environment

Fulltime

Full-Stack Engineer, AI Companion

The AI Companion team creates the speech interface to NEO, as well as the physic...

Location

United States , Palo Alto

Salary:

150000.00 - 250000.00 USD / Year

1X Technologies

Expiration Date

Until further notice

Requirements

4+ years of experience with C++
4+ years of experience with Python
4+ years of experience with Bazel
4+ years of experience with PyTorch
Experience with real‑time or streaming model architectures or systems
Product obsession with quality, performance, and design taste
Ability to take research ideas into production systems that work reliably
Good product taste as pertaining to human‑robot interaction, non‑verbal communication, and speech UX

Job Responsibility

Design the software architecture for real-time multimodal I/O
Design application flows like scheduling chores and triggering autonomous tasks from the voice interface
Optimize the companion stack for enabling seamless interactions with NEO
Make the Companion scalable and reliable while serving models from remote machines

What we offer

Health, dental, and vision insurance
401(k) with company match
Paid time off and holidays

Fulltime

Senior Full-Stack Web Application Developer / Software Engineer

You will be hands-on, leading the design, implementation, testing, launch, and s...

Location

United States , Bartlett

Salary:

90000.00 - 180000.00 USD / Year

apHarmony Inc.

Expiration Date

Until further notice

Requirements

Bachelor's Degree in Computer Science or related field
In-depth understanding of JavaScript
Ability to write cross-browser and cross-platform applications
5+ years experience writing reusable, maintainable, and well-tested code
Excellent verbal and written communication skills
Excellent teamwork and project management skills

Job Responsibility

Leading the design, implementation, testing, launch, and support of the various applications
Analyzing and Defining Requirements
Developing Full-stack Applications
Testing
Deployment

Fulltime

Full-Stack JavaScript Developer

We are looking for a Full-Stack JavaScript Developer (Node.js + Vue.js) to join ...

Location

Portugal

Salary:

Not provided

Ascendix Tech

Expiration Date

Until further notice

Requirements

4+ years of commercial experience with JavaScript/TypeScript
3+ years of commercial experience with Node.js on the back end
Experience building and maintaining REST/JSON APIs
Solid understanding of authentication/authorization, error handling, and logging
2+ years of commercial experience with a modern front-end framework
Vue.js is preferred (React experience acceptable, with readiness to work in Vue)
Experience building SPA dashboards, forms, data grids, and filters
Experience working as a true full-stack developer (same engineer owning both backend and frontend features end-to-end)
Strong knowledge of SQL and experience integrating applications with analytical/OLAP stores (Snowflake, Redshift, BigQuery, or similar)
Experience integrating with external APIs and third-party services

Job Responsibility

Work as a full-stack engineer, owning features from API to UI: Develop and maintain Node.js backend services for data ingestion, processing, and application logic
Implement Vue.js frontend components and pages (forms, tables, filters, dashboards)
Collaborate with solution architects and data engineers to: Consume and expose data from Snowflake and other data sources
Align on data models and contracts between the application and the data warehouse
Integrate with: Chrome extension–based data capture flows
External data providers and internal APIs
Ensure code quality: Write clean, testable, maintainable code in both the back end and the front end
Participate in code reviews, refactoring, and technical design discussions
Contribute to architecture and technical decisions for the MVP and further phases
Collaborate with PM/BA and client stakeholders, clarify requirements, and propose implementation options

What we offer

Health insurance
Vacation days: 22 days per year
Paid Time off Benefits
Meal Card
Friendly and calm atmosphere in the company
Career and professional growth: Individual development plan
Technical leads and mentors
Open management and well-established processes
Regular performance reviews
Free access to the company accounts on educational platforms (Udemy, Pluralsight)

Fulltime

Full-stack Engineer

Sapien

Location:
United States , NYC

Category:
IT - Software Development

Contract Type:
Not provided

Salary:

Job Description:

Job Responsibility:

Requirements:

Additional Information:

Job Posted:
February 18, 2026

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