Backend Developer Intern Jobs

About Ubiquiti At Ubiquiti Inc., we create technology platforms for Businesses, Smart Homes, and Internet Service Providers, driven by our goal to connect everyone, everywhere. To date, Ubiquiti has shipped over 100 million devices worldwide, from ISP networking products to next generation of IT solutions. Our growth is made possible by the dedicated team of hundreds behind the scenes. From software developers and product managers to designers and strategists, Team UI is driven to achieve our common goal: Rethinking IT. At Ubiquiti, you’ll heighten your potential and broaden your horizons - all while shaping the future of connectivity. Responsibilities Design, develop, and debug real-time embedded firmware for IoT systems, including gateways, lighting control, and environmental monitoring and control solutions. Maintain, optimize, and improve firmware for existing RTOS-based devices. Collaborate cross-functionally with BSP, HW, ID, Backend, Mobile, FE, PM, and PA teams to deliver high-quality products. Contribute to system-level architecture decisions for multi-module communication Document software architecture, tuning methods, and test results. Perform code reviews, ensuring best practices in coding standards. Participate in troubleshooting and root-cause analysis for firmware issues. Collaborate with QA and manufacturing teams for production firmware validation, factory firmware, and calibration procedures. Requirement (Must-Haves) Strong knowledge of networking fundamentals and protocols like TCP/IP (IPv4 and IPv6), socket programming, and higher-level protocols such as HTTP, WebSockets, or MQTT used in IoT systems. Experience developing firmware in a Real-Time Operating System (RTOS) environment (such as FreeRTOS or Zephyr). Proficient in C/C++ programming in embedded environments with RTOS. Understanding of memory management, interrupt handling, and power management in constrained systems. Familiarity with Git version control. A team player, who is self-m

About Ubiquiti At Ubiquiti Inc., we create technology platforms for Businesses, Smart Homes, and Internet Service Providers, driven by our goal to connect everyone, everywhere. To date, Ubiquiti has shipped over 100 million devices worldwide, from ISP networking products to next generation of IT solutions. Our growth is made possible by the dedicated team of hundreds behind the scenes. From software developers and product managers to designers and strategists, Team UI is driven to achieve our common goal: Rethinking IT. At Ubiquiti, you’ll heighten your potential and broaden your horizons - all while shaping the future of connectivity. Join forces with us on our mission to build a better IT industry. We are currently looking for a highly skilled Cloud Software Engineer (Go) to our team in Stockholm, Sweden. Please note that applicants must live in Sweden and hold a valid work permit at the time of application to be considered for this role. Responsibilities: Design and develop secure cloud-based services across UniFi Integrate designs with larger software systems Co-work with cloud architects, backend, and frontend developers Requirements: 5+ years of experience with Golang is required Highly proficient in developing AWS cloud services Proficient with relational and document based databases Experience with developing RESTful and MQTT API Experience with Git/GitHub Experience with Linux and Docker environments Ability to work independently Excellent written and verbal communication skills Strong sense of ownership of tasks and responsibilities Highly proficient in English (written and spoken) Nice to have: Familiarity with Java development Basic knowledge of WebRTC and WebSockets A solid understanding of networking protocols and architecture Experience with SD-WAN and/or VPN technologies Familiarity with the Agile software development processes Benefits Competitive compensation Occupational pension, health insurance, private health insurance, life

About Ubiquiti At Ubiquiti Inc., we create technology platforms for Businesses, Smart Homes, and Internet Service Providers, driven by our goal to connect everyone, everywhere. To date, Ubiquiti has shipped over 100 million devices worldwide, from ISP networking products to next generation of IT solutions. Our growth is made possible by the dedicated team of hundreds behind the scenes. From software developers and product managers to designers and strategists, Team UI is driven to achieve our common goal: Rethinking IT. At Ubiquiti, you’ll heighten your potential and broaden your horizons - all while shaping the future of connectivity. Responsibilities Regression, exploratory, issues verification testing; MQA lab setups maintaining; Take part in test planning and estimation; Manual testing — 90%, Automation — 10% Candidate needs to be in Kyiv (or consider relocation). Hybrid type of work. Knowledge and experience Experience with backend testing Networking L3-L4 3+ years of manual testing experience Upper-intermediate level of spoken and written English BS degree in Computer Science or related engineering degree Nice to have Networking L2, CCNA/HCNA certification Experience embedded firmware testing Automation testing experience Experience on Linux platforms Benefits International work environment and work with global development teams; Excellent work conditions in an A-Class office (Horizon Park Business Center); Compensation package matching global standards; Flexible work hours (as required); Paid parking, courses, training, conferences and business trips; Medical insurance Free lunches

Meet Yubico Yubico is a global leader in identity security and creator of the YubiKey, the original hardware-backed passkey. We are publicly traded on Nasdaq Stockholm; our global footprint includes headquarters in Stockholm, Sweden, Silicon Valley, California; and Singapore. Why Join Our Mission? At Yubico, we are guided by a shared belief that your work matters. We operate under a cultural philosophy of Speed with Integrity , pushing the boundaries of technology to secure the AI frontier—protecting both human and agentic AI interactions—and leading the transition to post-quantum cryptography. In everything we do, we live by our core values: Battle Friction: We constantly look for new ways to simplify our products, our work, and the user experience. Inspire Higher: We think big, champion the open internet, and strive to do the right thing even when it is difficult. One Team: We are open, responsive, and collaborative, overcoming challenges and celebrating our successes together. Aligned with our commitment to open standards, we foster a thriving builder ecosystem through the Yubico Developer Program , offering free open-source repositories , libraries, and SDKs to help developers rapidly integrate strong hardware authentication into any application. Through close collaborations with technical partners like Google, Microsoft, and Amazon, as well as newer frontiers like OpenAI, we continue to shape a safer digital world while donating security keys to protect vulnerable communities, journalists, and humanitarian groups worldwide through our Secure it Forward program. Tasks & Responsibilities: Implement, maintain and optimize cryptographic algorithms and primitives (e.g. encryption, hashing, digital signatures, key exchanges) that run on YubiKeys and YubiHSMs Follow research about classical algorithms (RSA, ECC, etc.), as well as Post Quantum Cryptography algorithms (ML-DSA, ML-KEM, etc.) Basic Qualifications: Ability to follow research in cryptography Good unders

About Ubiquiti At Ubiquiti Inc., we create technology platforms for Businesses, Smart Homes, and Internet Service Providers, driven by our goal to connect everyone, everywhere. To date, Ubiquiti has shipped over 100 million devices worldwide, from ISP networking products to next generation of IT solutions. Our growth is made possible by the dedicated team of hundreds behind the scenes. From software developers and product managers to designers and strategists, Team UI is driven to achieve our common goal: Rethinking IT. At Ubiquiti, you’ll heighten your potential and broaden your horizons - all while shaping the future of connectivity. Responsibilities Design and implement wide variety of test scripts; Take part in test planning and estimation; Extend functionality of Python test framework; Adapt and create tools to support new features/hardware; MQA lab setups maintaining; Knowledge and experience 3+ years of software testing experience; 1+ year QA Automation(backend) using Python, 1 year of manual testing experience; 5+ years networking related experience; Strong knowledge of software QA methodologies, tools and processes; Experience with testing of networks and embedded systems; Good knowledge of Linux administration and shell scripting; Solid knowledge of Python; Experience with Python test frameworks (PyTest, etc.); Upper-intermediate level of spoken and written English; BS degree in Computer Science or related engineering degree. Benefits International work environment and work with global development teams Compensation package matching global standards Flexible work hours (as required) Paid parking, courses, training, conferences and business trips We will contact candidates who meet our criteria within the next two weeks.

Who We Are At OKX, we believe that the future will be reshaped by crypto, and ultimately contribute to every individual's freedom. OKX is a leading crypto exchange, and the developer of OKX Wallet, giving millions access to crypto trading and decentralized crypto applications (dApps). OKX is also a trusted brand by hundreds of large institutions seeking access to crypto markets. We are safe and reliable, backed by our Proof of Reserves. Across our multiple offices globally, we are united by our core principles: We Before Me , Do the Right Thing , and Get Things Done . These shared values drive our culture, shape our processes, and foster a friendly, rewarding, and diverse environment for every OK-er. OKX is part of OKG, a group that brings the value of Blockchain to users around the world, through our leading products OKX, OKX Wallet, OKLink and more. About the Team Product managers at OKX are the CEOs of their areas of focus. We develop growth-focused product strategies, manage cost/profitability and then deliver powerful strategies that guide customers through simple transaction workflows. We are building an integrated and beautiful crypto-finance experience for mobile and web. Product managers collaborate across business units and align user research, design and UX writing, brand and marketing, technical project management and engineering, testing, data, compliance and legal teams. We are a multi-cultural and decentralized team with a deep passion for bitcoin, crypto and Defi. We are objective oriented and everyone contributes to data analysis to drive business growth. About the Opportunity As the Product Manager, you will be responsible to discover new markets and revenue opportunities and innovate new products to address the market needs. Act as an internal champion to build consensus and influence senior management for new product ideas. Identify, define, implement and instrument market research, product design, product implementation and product

Who We Are At OKX, we believe that the future will be reshaped by crypto, and ultimately contribute to every individual's freedom. OKX is a leading crypto exchange, and the developer of OKX Wallet, giving millions access to crypto trading and decentralized crypto applications (dApps). OKX is also a trusted brand by hundreds of large institutions seeking access to crypto markets. We are safe and reliable, backed by our Proof of Reserves. Across our multiple offices globally, we are united by our core principles: We Before Me , Do the Right Thing , and Get Things Done . These shared values drive our culture, shape our processes, and foster a friendly, rewarding, and diverse environment for every OK-er. OKX is part of OKG, a group that brings the value of Blockchain to users around the world, through our leading products OKX, OKX Wallet, OKLink and more. About the Team Product managers at OKX are the CEOs of their areas of focus. We develop growth-focused product strategies, manage cost/profitability and then deliver powerful strategies that guide customers through simple transaction workflows. We are building an integrated and beautiful crypto-finance experience for mobile and web. Product managers collaborate across business units and align user research, design and UX writing, brand and marketing, technical project management and engineering, testing, data, compliance and legal teams. We are a multi-cultural and decentralized team with a deep passion for bitcoin, crypto and Defi. We are objective oriented and everyone contributes to data analysis to drive business growth. About the Opportunity As the Product Manager, you will be responsible to discover new markets and revenue opportunities and innovate new products to address the market needs. Act as an internal champion to build consensus and influence senior management for new product ideas. Identify, define, implement and instrument market research, product design, product implementation and product

Who We Are At OKX, we believe that the future will be reshaped by crypto, and ultimately contribute to every individual's freedom. OKX is a leading crypto exchange, and the developer of OKX Wallet, giving millions access to crypto trading and decentralized crypto applications (dApps). OKX is also a trusted brand by hundreds of large institutions seeking access to crypto markets. We are safe and reliable, backed by our Proof of Reserves. Across our multiple offices globally, we are united by our core principles: We Before Me, Do the Right Thing, and Get Things Done. These shared values drive our culture, shape our processes, and foster a friendly, rewarding, and diverse environment for every OK-er. OKX is part of OKG, a group that brings the value of Blockchain to users around the world, through our leading products OKX, OKX Wallet, OKLink and more. About this Job You will be expected to show a high level of technical knowledge and professionalism at all times when responding to queries from international legal authorities, law firms and relevant third parties within a stipulated time-frame. What You’ll Be Doing Attending to inquiries from legal authorities and legal representatives from all around the world while maintaining delivery of a high quality service level. Liaising with internal stakeholders such as compliance, risk and customer service teams ensuring all queries are dealt with in a professional manner and escalating where appropriate. Maintaining a working knowledge of company products to effectively communicate with external stakeholders. Creating and maintaining strong relationships with company partners and external stakeholders. Escalate any queries or unresolved issues to Supervisors and as advised by the operations management, which cannot be completed within the agreed procedures. Support the enhancement of our Legal Response function. Manage or participate in specific projects which may arise from time to time. What We L

Who We Are At OKX, we believe that the future will be reshaped by crypto, and ultimately contribute to every individual's freedom. OKX is a leading crypto exchange, and the developer of OKX Wallet, giving millions access to crypto trading and decentralized crypto applications (dApps). OKX is also a trusted brand by hundreds of large institutions seeking access to crypto markets. We are safe and reliable, backed by our Proof of Reserves. Across our multiple offices globally, we are united by our core principles: We Before Me, Do the Right Thing, and Get Things Done. These shared values drive our culture, shape our processes, and foster a friendly, rewarding, and diverse environment for every OK-er. OKX is part of OKG, a group that brings the value of Blockchain to users around the world, through our leading products OKX, OKX Wallet, OKLink and more. About the Opportunity The Accounting Manager will support the end-to-end close lifecycle for our San Jose operations, driving accuracy and efficiency across journal entry preparation, reconciliations, and analysis. This role serves as a key pillar in the finance department, supporting critical month-end and year-end close activities while ensuring strict compliance with internal policies and tax regulations. As a proactive problem-solver, you will not only manage cross-functional queries and audit documentation but also identify strategic opportunities to automate workflows and streamline close processes within a fast-paced, complex organizational environment. What You’ll Be Doing Support accounting and financial reporting operations for regional subsidiaries Support month-end closing, including revenue recognition, cost allocation, and intercompany transactions for local entities, in alignment with group reporting requirements Prepare monthly, quarterly, and annual financial reports to support external audits, regulatory compliance, and internal management reporting Further develop internal control frameworks to ensure a

This is Adyen Adyen provides payments, data, and financial products in a single solution for customers like Meta, Uber, H&M, and Microsoft - making us the financial technology platform of choice. At Adyen, everything we do is engineered for ambition. For our teams, we create an environment with opportunities for our people to succeed, backed by the culture and support to ensure they are enabled to truly own their careers. We are motivated individuals who tackle unique technical challenges at scale and solve them as a team. Together, we deliver innovative and ethical solutions that help businesses achieve their ambitions faster. Senior Commercial Partnerships Manager - Agentic Commerce Adyen is looking for a Senior Commercial Partnerships Manager to lead the commercial activation of Agentic Commerce across Agent Developer partnerships and our broader North American partner ecosystem. As we scale integrations with partners such as Google, Meta, Amazon, Microsoft, OpenAI, and others, this role will bridge product, partner platforms, and commercial execution by developing joint GTM strategies, driving adoption through priority partners, and representing Commercial Partnerships in the internal planning and execution of our Agentic Commerce strategy. What You'll Do: Serve as the primary commercial GTM lead for priority Agent Developer partnerships, ensuring alignment on objectives and impact. Develop and own the joint GTM plan per partner, including prioritization of initiatives, recommendation of GTM investment, execution, partner commitments and measurement of commercial impact and ROI. Serve as an Agentic Commerce SME for priority Premier and Premier+ partners in North America, supporting strategic partner and merchant engagements to accelerate understanding, activation and product adoption. Represent Commercial Partnerships in relevant Agentic Commerce strategy, roadmap and planning forums, bringing partner-market feedback into internal decision-making

OKX will be prioritising applicants who have a current right to work in Hong Kong, and do not require OKX's sponsorship of a visa. Who We Are At OKX, we believe that the future will be reshaped by crypto, and ultimately contribute to every individual's freedom. OKX is a leading crypto exchange, and the developer of OKX Wallet, giving millions access to crypto trading and decentralized crypto applications (dApps). OKX is also a trusted brand by hundreds of large institutions seeking access to crypto markets. We are safe and reliable, backed by our Proof of Reserves. Across our multiple offices globally, we are united by our core principles: We Before Me , Do the Right Thing , and Get Things Done . These shared values drive our culture, shape our processes, and foster a friendly, rewarding, and diverse environment for every OK-er. OKX is part of OKG, a group that brings the value of Blockchain to users around the world, through our leading products OKX, OKX Wallet, OKLink and more. About The Opportunity We are looking for an experienced Product Manager to develop and maintain our core API trading products. This includes managing internal and external stakeholders, developing product iteration plans, establishing and maintaining standards, translating user stories into an API specification, completing competitor analysis, and more. What You’ll Be Doing Gather business requirements and API feedback from both internal and external sources, such as feedback from institutional customers, and continuously improve the API product through effective iterative mechanisms. Study the competitive landscape and industry trends, transforming this information into actionable API product iteration plans that align with the company's actual needs. Utilize data analytics to create data-driven insights to understand client behaviour. Cultivate and maintain robust relationships with customers and strategic partners, using their feedback to guide product en

OKX will be prioritising applicants who have a current right to work in Singapore, and do not require OKX's sponsorship of a visa. Who We Are At OKX, we believe that the future will be reshaped by crypto, and ultimately contribute to every individual's freedom. OKX is a leading crypto exchange, and the developer of OKX Wallet, giving millions access to crypto trading and decentralized crypto applications (dApps). OKX is also a trusted brand by hundreds of large institutions seeking access to crypto markets. We are safe and reliable, backed by our Proof of Reserves. Across our multiple offices globally, we are united by our core principles: We Before Me , Do the Right Thing , and Get Things Done . These shared values drive our culture, shape our processes, and foster a friendly, rewarding, and diverse environment for every OK-er. OKX is part of OKG, a group that brings the value of Blockchain to users around the world, through our leading products OKX, OKX Wallet, OKLink and more. About The Opportunity We are looking for an experienced Product Manager to develop and maintain our core API trading products. This includes managing internal and external stakeholders, developing product iteration plans, establishing and maintaining standards, translating user stories into an API specification, completing competitor analysis, and more. What You’ll Be Doing Gather business requirements and API feedback from both internal and external sources, such as feedback from institutional customers, and continuously improve the API product through effective iterative mechanisms. Study the competitive landscape and industry trends, transforming this information into actionable API product iteration plans that align with the company's actual needs. Utilize data analytics to create data-driven insights to understand client behaviour. Cultivate and maintain robust relationships with customers and strategic partners, using their feedback to guide product en

At Anyscale , we're on a mission to democratize distributed computing and make it accessible to software developers of all skill levels. We’re commercializing Ray , a popular open-source project that's creating an ecosystem of libraries for scalable machine learning. Companies like OpenAI , Uber , Spotify , Instacart , Cruise , and many more, have Ray in their tech stacks to accelerate the progress of AI applications out into the real world. With Anyscale, we’re building the best place to run Ray, so that any developer or data scientist can scale an ML application from their laptop to the cluster without needing to be a distributed systems expert. Proud to be backed by Andreessen Horowitz, NEA, and Addition with $250+ million raised to date. About the Role Anyscale's security and compliance needs are growing as we work with larger and more demanding customers. Compliance is increasingly a customer-facing, contractual function rather than an internal exercise, and we are looking for someone to own it. This role owns that function end to end: our audits, our evidence base, our risk register, and the security diligence that customers put us through before and during a contract. You will work directly with the Head of Security and across engineering, IT, legal, and sales. This is a program-ownership role with the autonomy and accountability that implies. You will not have a senior compliance function above you to defer to; you are that function. In your first year, success looks like a complete and defensible evidence base with clean audit outcomes, a repeatable way to answer customer security diligence, and a risk register that leadership actually uses. What You'll Do Own our SOC 2 Type II and ISO 27001 programs, and future frameworks as we take them on, including scope, evidence, control operation, and the relationship with our external auditors. Own and complete the control evidence base in our compliance automation platform, moving controls from partially substantia

OKX will be prioritising applicants who have a current right to work in Hong Kong, and do not require OKX's sponsorship of a visa. Who We Are At OKX, we believe that the future will be reshaped by crypto, and ultimately contribute to every individual's freedom. OKX is a leading crypto exchange, and the developer of OKX Wallet, giving millions access to crypto trading and decentralized crypto applications (dApps). OKX is also a trusted brand by hundreds of large institutions seeking access to crypto markets. We are safe and reliable, backed by our Proof of Reserves. Across our multiple offices globally, we are united by our core principles: We Before Me , Do the Right Thing , and Get Things Done . These shared values drive our culture, shape our processes, and foster a friendly, rewarding, and diverse environment for every OK-er. OKX is part of OKG, a group that brings the value of Blockchain to users around the world, through our leading products OKX, OKX Wallet, OKLink and more. About The Opportunity OKX is building out its equities and tokenized securities business. This is a post-trade and brokerage systems product role — you will own the layer that sits between our users and the securities markets: order management, execution, settlement, asset servicing and reconciliation. We have strong crypto product and engineering talent. What this role brings is depth in brokerage architecture and securities market structure: how these systems are built, why they are built that way, and what breaks at scale. You will be the internal authority on that, and your judgment will shape decisions that are expensive to reverse. What You’ll Be Doing Own the brokerage core — order management, execution and routing, instrument lifecycle and trading status, settlement and reconciliation. Shape account, custody and clearing architecture , along with the operating model required to run it. Own corporate actions and asset servicing end to end , in both co

OKX will be prioritising applicants who have a current right to work in Singapore, and do not require OKX's sponsorship of a visa. Who We Are At OKX, we believe that the future will be reshaped by crypto, and ultimately contribute to every individual's freedom. OKX is a leading crypto exchange, and the developer of OKX Wallet, giving millions access to crypto trading and decentralized crypto applications (dApps). OKX is also a trusted brand by hundreds of large institutions seeking access to crypto markets. We are safe and reliable, backed by our Proof of Reserves. Across our multiple offices globally, we are united by our core principles: We Before Me , Do the Right Thing , and Get Things Done . These shared values drive our culture, shape our processes, and foster a friendly, rewarding, and diverse environment for every OK-er. OKX is part of OKG, a group that brings the value of Blockchain to users around the world, through our leading products OKX, OKX Wallet, OKLink and more. About The Opportunity OKX is building out its equities and tokenized securities business. This is a post-trade and brokerage systems product role — you will own the layer that sits between our users and the securities markets: order management, execution, settlement, asset servicing and reconciliation. We have strong crypto product and engineering talent. What this role brings is depth in brokerage architecture and securities market structure: how these systems are built, why they are built that way, and what breaks at scale. You will be the internal authority on that, and your judgment will shape decisions that are expensive to reverse. What You’ll Be Doing Own the brokerage core — order management, execution and routing, instrument lifecycle and trading status, settlement and reconciliation. Shape account, custody and clearing architecture , along with the operating model required to run it. Own corporate actions and asset servicing end to end , in both co