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Junior Java Full Stack Engineer 2c Staff Jobs

15 active opportunities · Updated for September 2026

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Stripe
📍 SeattleFull-timeFrom $156.8K/yr
1mo ago

Who we are About Stripe Stripe, LLC. is a financial infrastructure platform for businesses. Millions of companies - from the world’s largest enterprises to the most ambitious startups - use Stripe to accept payments, grow their revenue, and accelerate new business opportunities. Our mission is to increase the GDP of the internet, and we have a staggering amount of work ahead. That means you have an unprecedented opportunity to put the global economy within everyone's reach while doing the most important work of your career. What you’ll do Responsibilities Design, build, and maintain APIs, services, and systems across Stripe’s engineering teams using Java, Ruby, Scala, and Go Build software infrastructure, including developing, testing, and deploying it Design and develop software systems, using scientific analysis and mathematical models to predict and measure outcome and consequences of design Engineer payments integration with various financial partners software systems Design APIs and underlying data models to support complex financial abstractions and multi-party integrations, enabling flexible billing and settlement configurations across international markets Develop and direct software system testing and validation procedures, programming, and documentation Debug production issues across services and multiple levels of the stack Analyze user needs and software requirements to determine the feasibility of design within time and cost constraints Work with engineers across the company to build new features at large-scale Build new systems to securely store sensitive data; Improve engineering standards, tooling, and processes Integrate observability tools and alerting mechanisms (Datadog, Prometheus) into high-traffic production systems, defining SLAs and real-time diagnostics to meet the reliability standards required by financial partners Mentor junior engineers, lead technical design reviews, and establish best practices in code quality, system design, re

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1mo ago

At Snowflake, we are powering the era of the agentic enterprise. To usher in this new era, we seek AI-native thinkers across every function who are energized by the opportunity to reinvent how they work. You don’t just use tools; you possess an innate curiosity, treating AI as a high-trust collaborator that is core to how you solve problems and accelerate your impact. We look for low-ego individuals who thrive in dynamic and fast-moving environments and move with an experimental mindset — who rapidly test emerging capabilities to discover simpler, more powerful ways to deliver results. At Snowflake, your role isn't just to execute a function, but to help redefine the future of how work gets done. We’re hiring a talented Software Engineering Manager to lead the Snowtrail infrastructure team at Snowflake. Snowtrail is the infrastructure that enables Snowflake to deliver dedicated coverage for customer-specific workloads. Its innovative approach allows Snowflake to precisely test and measure the impact of changes on individual customers, making it essential for ensuring the platform’s reliability, correctness, and performance. Through query replay, Snowtrail helps us catch regressions early. By leveraging machine learning models to intelligently sample queries and workloads, we continuously optimize for both cost and performance. Evolving Snowtrail to incorporate new engine features while improving scalability, efficiency, and reliability is central to our continued success OUR IDEAL MANAGER WILL HAVE : Strong passion and proven track record for shipping quality software in high code velocity environments 10+ years industry experience designing and building distributed data systems. Excellent problem solving skills, and strong CS fundamentals including data structures, algorithms, and distributed systems. Fluency in SQL, Java, C++, Python or Go. Ability to collaborate well across teams, build high-performing teams and mentor junior engineers. Excellent interpersonal co

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Hootsuite
📍 OntarioFull-timeFrom C$98.4K/yr
1mo ago

In the role of Senior Salesforce Developer, you will play a pivotal role within the Business Technology team, providing essential support across the Enterprise. Your responsibilities will involve creating highly secure, scalable, adaptable, and high-performing solutions. Reporting to the Director, you will work closely with product and technology teams to design, develop, test, iterate, and deploy new features, integrate systems, enhance existing features, and offer operational support. Additionally, you will independently conduct code reviews and guide junior team members towards improved design and the adoption of clean, standardized coding practices. WHAT YOU’LL DO: Build solutions in Salesforce.com leveraging Force.com, APEX, Lightning Web Components, Web Services, and APIs. Provide expertise and recommendation on when to use configuration vs. code vs off-the- shelf products. Support cross systems integrations through developing and configuring tools across native Salesforce ecosystem as well as other cloud technologies. Partner with bu siness owners to deliver tailored solutions that support business requirements, create a superlative user experience, and drive tangible business value. Actively engage and share insights in the planning and analysis of requirements for system enhancements, translating requirements into well-architecture solutions that best use the Salesforce platform and products. Analyze Salesforce tech debt, propose design and implement solutions. Function as technical lead: Provide Recommendations on configuration vs code Audit and document existing processes and technical designs, and identify areas for improvement Manage and provide support for other sales tools (e.g. LeanData, Gong and SalesLoft) Distill complex technical solutions into layman’s terms and communicate these in a clear and understandable way to stakeholders Function as Senior team member with the ability to guide and mentor more junior team members as it r

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Stripe
📍 New YorkFull-timeFrom $190.4K/yr
1mo ago

Who we are About Stripe Stripe, LLC. is a financial infrastructure platform for businesses. Millions of companies - from the world’s largest enterprises to the most ambitious startups - use Stripe to accept payments, grow their revenue, and accelerate new business opportunities. Our mission is to increase the GDP of the internet, and we have a staggering amount of work ahead. That means you have an unprecedented opportunity to put the global economy within everyone's reach while doing the most important work of your career. What you’ll do Responsibilities Work with engineers, designers, and product managers to design and build highly scalable and secure consumer experiences that process billions of dollars per year Design and build APIs, services, systems and experiments that evaluate the effectiveness of new and existing product features against critical business metrics Coach and mentor junior engineers, assist in hiring, and partner to develop team culture/best practices Participate in all parts of the software development workflow to improve engineering standards, tooling, and processes Operate at the intersection of data science and software engineering - apply state of the art data analysis tools and ML to understand/improve product and user behaviors Build software including creation, modification, and testing of source code written in Ruby, JavaScript, Typescript, and JVM languages Who you are Minimum requirements 6 years of Software Engineering experience. Position also requires the following: 6 years of experience in building software with Typescript, Javascript, and Ruby; 4 years of experience in building web or mobile applications; 3 years of experience with SQL databases; 2 years of experience in writing technical design documents; and 1 year of experience in designing and implementing large scale consumer payment experiments. Salary: $190,400 – $285,600/yr. This salary range represents the base salary range for the role and any sales commissions / sale

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Peloton
📍 PolandFull-time
8 days ago

ABOUT THE ROLE We are looking for a highly accomplished backend software engineer with extensive experience in leading and building customer facing performant backend services. You will be on the team that creates and expands Peloton’s e-commerce presence on the web, retail and other sales channels. You will be a hands-on technical lead on the team that will be working to build highly scalable and disjoint backend platforms and services for our users, both internal and external. YOUR DAILY IMPACT AT PELOTON Be a hands-on technical leader with focus on delivery of small to large initiatives Guide the team to make strategic technical decisions that enable fast, reliable execution, and that maintain positive relationships with key stakeholders Work within an agile development environment with peer engineers, designers, and product managers on a daily basis to scope, develop and deliver a software experience that realizes the product strategy Be a part of a positive and inclusive culture that is hyper-focused on cultivating growth and learning for both engineers and non-engineers YOU BRING TO PELOTON 6+ years software development experience, including leadership over delivery of high impact projects Experience with Java, Kotlin, Python or similar languages Experience building and scaling out RESTful microservices Experience with large-scale event processing & messaging technologies like Kafka and Amazon SQS Familiarity with accessing, querying and writing to data stores like PostgreSQL, MongoDB, DynamoDB, Elasticsearch, etc. Experience with Spring Boot, Docker and Kubernetes Experience in Unit Testing/Test Driven Development Experience in cloud infrastructure like AWS/GCP Experience with mentoring junior engineers Working knowledge of GraphQL Experience working with DataDog or similar monitoring tools Strong desire to learn and mentor engineers, helping them achieve their highest potential An agile mindset that embraces iterative design Experience with end to

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Mongodb
📍 New York CityFull-timeFrom $106K/yr
1mo ago

MongoDB’s Replication Team builds the infrastructure that enables high availability, fault tolerance, automatic failover, and tunable consistency. As an engineer on the team, you will design and implement distributed-systems features that protect data and keep applications available under demanding operating conditions. You will work primarily in C++ on core database code, partner with engineers across MongoDB, and help shape features that are central to major MongoDB releases. This is an opportunity to apply distributed-systems fundamentals to a widely used database while solving challenging problems in correctness, performance, and operability. We're looking to speak with candidates based in New York City for our in-office working model. What you will do Design and implement replication features based on the Raft consensus protocol Improve failover behavior, availability, correctness, and performance across the replication system Write production-quality C++ and the unit, integration, and system tests needed to demonstrate correctness Use JavaScript and Python where appropriate to extend test coverage and validate end-to-end behavior Diagnose test failures, investigate bugs, and drive issues through root-cause analysis and resolution Measure the performance impact of code changes and prevent or resolve regressions Collaborate with partner engineering teams and stakeholders on large, cross-functional initiatives Investigate distributed-systems issues raised by customers and Technical Support, communicate findings clearly, and help deliver durable fixes Participate in code reviews, design reviews, and technical discussions that improve the quality of the team’s work Interview candidates and mentor junior engineers and interns What you bring Required At least five years of experience programming, debugging, and performance-tuning distributed or highly concurrent software systems Strong systems fundamentals, including multithreaded programming, concurrency, debugging,

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Squarespace
📍 DublinFull-time€70K – €107.8K/yr
1mo ago

Squarespace is looking for a Security Engineer with a focus on Investigations and Incident Response to join a dedicated team responsible for monitoring and responding to attacks on our platform. You'll partner with teams across the organization as you investigate security events specific to our platform and corporate environment. This is a hybrid role working from our Dublin office 3 days per week and you will report to the Detection and Response Manager. You’ll Get To… You will investigate security events through our SIEM and SOAR technology Design alerts to monitor both our customer and corporate environments for anomalous behavior Share insights gleaned from SOAR case work with relevant security team members in order to drive more security feature implementation to the product or corporate environment You will respond to ongoing incidents, investigate historical compromises, and provide adept analysis and findings Establish strategies for threat detection, alerting, and response You will initiate reactive threat hunting engagements by performing endpoint, network, application, and log analysis Establish processes and build 'playbooks' of operational response to security events and/or incidents Familiarity with Threat Intelligence and keeping up-to-date on modern threats and InfoSec news Build and support security-focused tools and services Provide Mentorship and technical expertise to junior team members to assist their technical development Who We’re Looking For 5+ years experience in the security industry Certifications (preferred not required): OSCP, OSCE, OSWP Experience working with SIEM and SOAR technologies Knowledgeable of cloud & container security, and infrastructure as code Working understanding of malware analysis, reverse engineering, and host-based and memory forensics Proficiency in programming or scripting languages (preference to Python, Go, JavaScript, or Bash) is a plus Knowledge of network and web related protocols (e.g., TCP/I

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Stripe
📍 South San FranciscoFull-time$190.4K – $285.6K/yr
1mo ago

Who we are About Stripe Stripe, LLC. is a financial infrastructure platform for businesses. Millions of companies - from the world’s largest enterprises to the most ambitious startups - use Stripe to accept payments, grow their revenue, and accelerate new business opportunities. Our mission is to increase the GDP of the internet, and we have a staggering amount of work ahead. That means you have an unprecedented opportunity to put the global economy within everyone's reach while doing the most important work of your career. What you’ll do Responsibilities Lead technical discussions and implement scalable technical solutions for open-ended, medium-to-large-sized technical problems in the issued cards and financial accounts space, including account management/compliance, onboarding, fraud prevention, and more (50%); Write technical project briefs and workstream roadmaps for medium-to-large-sized technical problems in the banking-as-a-service space (5%); Provide mentorship & technical training around the codebase to junior engineers and newer engineers (5%); Write technical documentation around compliance and fraud within the card issuing domain (5%); Partner directly with cross functional teams, like Product and Fraud Strategy, to translate real-world requirements into technical outcomes (5%); Regularly go on-call for your engineering team (10%); Review API and technical designs for various engineering teams (20%). Who you are Minimum requirements Bachelor's degree or foreign equivalent in Computer Science or related field followed by 3 years of experience in Software Engineering. Position also requires experience with the following: 3 years of experience with typed (Java, C++ or Scala) or untyped programming languages (Javascript, Ruby, Python); 2 years of experience with building end-to-end software solutions for fraud, compliance, and/or onboarding in the banking-as-a-service space; 2 years of experience with Data

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