Вакансии Backend Developer

At the moment, we’re in search of a Middle/Middle+ Backend Developer (Node.js) for an exciting project. It’s a platform for cryptocurrency management that is uniting unique tokenomics, generation and innovative features.

What you have to deal with

• Development of brand new components and integrations for the existing project;
• Planning and estimation;
• Taking major architectural decisions, based on market best practices and PoC’s.

What we expect from you

• 3+ years of experience in backend development;
• Proficiency in Node.js and TypeScript for scalable server-side development;
• Strong command of Express with InversifyJS for dependency injection (DI) to ensure clean and maintainable architecture;
• Deep knowledge of AWS Lambdas for serverless computing and efficient, event-driven functions;
• Proven experience in DynamoDB for NoSQL database needs and scalable data storage;
• Proficiency in PostgreSQL for relational database management and complex queries;
• Experience in Redis for caching to optimize response times and improve application performance;
• Redis Pub/Sub for message brokering and real-time communication;
• Knowledge of AWS cognito for authorization and AWS infrastructure;
• At least intermediate level of English.

Will be a plus

• Experience with blockchain technologies.

We are looking for an experienced and motivated .NET developer to join our team to support and modernize our legacy applications. If you have experience with .NET Framework and VBA development and are skilled in maintaining and upgrading existing systems, we want you on our team!

About client:

An online dealer for mountaineering equipment was born and set up on the site of a former textile factory. The company specializes in outdoor gear and equipment, offering various products for hiking, climbing, mountaineering, and other adventure activities. Over the years, they have stayed true to this concept and become one of Europe's leading online mountain sports retailers. Today, more than 700 employees are committed to providing the best shopping experience for mountain sports and outdoor enthusiasts. It offers high-quality clothing, footwear, and accessories from well-known brands, catering to amateur and professional outdoor enthusiasts. In addition to its extensive product selection, the company emphasizes sustainability, customer service, and expert advice to help customers make the best choices for their needs.

Requirements

• Several years of experience in developing applications using .NET (Visual Basic or C#)
• Proficiency in Windows Forms or WPF for UI development
• Strong understanding of MS Office, with experience in VBA being a plus
• Experience working with SQL and databases, knowledge of SSIS is a bonus
• Willingness to work with modern technologies such as React, Node.js, and PHP
• Upper-intermediate or higher for communication with an international team

Responsibilities

• Develop and maintain .NET and MS Office-based applications to support internal business processes
• Design new features in close collaboration with users
• Troubleshoot and resolve issues in existing applications
• Assist in migrating legacy applications to a new tech stack (React/Node.js, PHP)
• Work closely with the team to improve current solutions and contribute to new developments.

Ciklum is looking for a Middle Java Developer to join our team full-time in Ukraine.

About the role:

As a Middle Java Developer, become a part of a cross-functional development team engineering experiences of tomorrow.
The Client is a trailblazer in AI-powered Anti-Money Laundering (AML) solutions, offering cutting-edge technology to fintechs, banks, and regulatory bodies worldwide. Our mission is to enhance trust in financial transactions, ensuring compliant and innovative business growth.
Our technology empowers customers to expand into new markets and introduce groundbreaking products.

Responsibilities

• Design and develop a scalable data processing and ML pipeline using the latest big data technologies in a fast paced agile environment
• Investigate new technological areas and understand them in depth through rapid self-learning
• Demonstrates strong analytical problem-solving skills to support scalable and sustainable design solutions
• Ability to take ownership of product development including all life cycle stages: translating product requirements into actionable designs and tasks, development, UT, and production troubleshooting

Requirements

• At least 3 years of hands-on development experience
• Experience developing data-oriented products preferably using Java – must, python – an advantage
• Experience in data processing FW – Spark
• Experience in Distributed Databases (Such as Elasticsearch, Mongo, Redis, etc)
• Experience with developing microservices-based architecture
• Experience working in container-based environments using tools such as K8s, helm
• Experience working as a software developer in an Agile environment

Desirable

• Experience in data processing FW such as Pandas, Hadoop, Airflow
• Experience in machine learning FWs such as SKLearn, Tensorflow
• Experience with RedHat OpenShift
• Dev Environment knowledge: GIT, Jenkins, Docker

We are looking for skilled Python developers. It doesn’t matter where you work from – Ukraine, Europe, or another region.
Our main backend direction is Python combined with multiple frameworks (Django and FastAPI are the primary ones). In frontend development, we mostly use ReactJS.

Required skills:

• Experience with Django web framework;
• Experience with FastAPI;
• Experience with IaaS and PaaS;
• Experience with relational databases (non-relational databases will be an advantage);
• Experience with the creation and use of RESTful APIs;
• Solid experience with version control systems (Git);
• Knowledge of Docker is preferable;
• Understanding of object-oriented programming principles;
• Basic knowledge of unit tests creation principles;
• Knowledge of UNIX systems;
• Upper-Intermediate (B2);
• Experienced PC user :)

PandaDoc is looking for a Senior Python Engineer to join one of our R&D teams, Document App. The vision of the Document App track is to continuously enhance the reliability and stability of the document domain, while facilitating rapid and straight-forward contributions from the engineering organization.
We are looking for people who believe in the PandaDoc culture and are ready to develop secure, reliable, and scalable product solutions within our fast-growing business.
Are you adaptable, driven, and friendly? Do you thrive in a fast-paced work environment where collaboration is the norm? If the answer is yes, then you’re a Panda and we want you to join our team.

In this role, you will:

• Take end-to-end technical ownership of features and improvements
• Have the opportunity to build and maintain application architecture
• Actively collaborate with other engineers and different parts of the organization
• Follow and contribute to agile development processes (Scrum framework)

Our stack:

• Microservices
• Python, Django, AsyncIO
• AWS, Docker, Kubernetes
• PostgreSQL, Redis
• NATS, Kafka

About you:

• At least 3 years of experience in designing and implementing application architectures and code that are scalable, available, maintainable, and performant
• Care about quality and you know what it means to ship high-quality code
• Put yourself in the shoes of your users and be a steward of crafting great experiences
• Strong communicator. Explaining complex technical concepts to product managers, designers, customer support, and other engineers is no problem for you
• Passion for continued learning and a track record of picking up new technologies and skills

PandaDoc is seeking a Senior Python Engineer to join our Infrastructure Platform Track.
At PandaDoc, we have product teams concentrating on shipping new features and a purely technical track focusing on platform engineering. The Platform teams create the technology that enables PandaDoc to learn quickly and scale easily, enabling rapid growth in our users and our business around the globe.
This role is based on the Dev Experience team, which is focused on enabling product teams to streamline development and delivery processes. Join us and help to amplify productivity, quality, and innovation across PandaDoc.

In this role, you will:

• Build software, frameworks, and tools required for reliable operations of PandaDoc services:
• Design and improve how PandaDoc services communicate using gRPC (and service meshes), Temporal.io, and Kafka by providing libraries and guidance for engineers.
• Work closely with Kubernetes. We run on top of AWS EKS. We have five main clusters with more than 200 services in each of different sizes, written mainly in Python (~70%) and Java.
• Improve how PandaDoc services are deployed (including machinery for canary and blue-green deployments) and monitored across all our clusters.
• Improve our observability as both a developer/maintainer of systems/frameworks and a mentor to our product development teams.
• Collaborate with other engineers on the team and cross-functionally to foster solid engineering principles and represent our engineering values.
• Be a change agent by recommending and introducing best practices for all PandaDoc engineers.
• Be an innovation advocate for the technical growth of PandaDoc.
• Share knowledge by writing documentation and holding talks and workshops.

Our stack:

• Service-oriented architecture, but be prepared to deal with legacy code and monolithic services based on the Django framework.
• Two main stacks: Python and Java:
• Python services are primarily written using AsyncIO frameworks and libraries, but we also have Django-based services and a lot of Celery workloads;
• Java services based on Spring Boot with custom extensions, Java 11, and Gradle as a build tool;
• AWS and K8S are used extensively for provisioning and deploying workloads.
• The main cross-service communication transports:
• NATS is our main RPC transport, but we’re migrating to gRPC to eliminate the single point of failure with NATS.
• Kafka and Debezium for even-based operations.
• RabbitMQ is a transport for Celery, but we look forward to migrating to Temporal.io.
• Grafana stack for monitoring, alerting, and distributed tracing

About you:

• At least 5+ years of development experience with Python.
• Care about quality; you know what shipping high-quality code means.
• Strong understanding and experience in AsyncIO.
• Experience with the Django framework.
• Experience with any relational databases (SQL queries, migrations, optimization);
• Experience with message queues (e.g., RabbitMQ, NATS, Kafka).
• Experience with Amazon Web Services and Kubernetes.
• Hands-on experience in developing a service-oriented architecture.
• Hands-on experience with CI/CD (e.g., GitLab, Jenkins).
• It is good to have experience with the Grafana LGTM stack and OpenTelemetry.
• It is good to have open-source contributions and experience.
• It is good to have basic knowledge of Golang.
• English: intermediate+ (verbal and written).

Dive deep into Digital! For 20 years Intellias has been developing top-tier digital solutions for the world’s leading companies, keeping them in line with the latest technology trends. Join in and provide innovations for the future!

What project we have for you

Our team is growing, and we are looking for a talented back-end developer. You will work in small teams on various products, from integrating multiple platforms into one dashboard to managing our data and analytics systems.
Guesty provides a property management software product and support services for the $100 billion Airbnb and vacation rental market. We are one of the fastest growing high-tech start-ups in Tel Aviv, we are profitable and showing very promising results.
The team is all about accuracy, architecture, and impact. We handle complex business logic, data flows and transformations, and focus on providing high-most quality & accuracy.
When you will join us, you will have a tremendous impact on company’s success.
Stack: Node.js, NestJS, TypeScript, MongoDB, postgreSQL, Kafka, RabbitMQ, React, AWS
If you are looking for an interesting product and enjoy being challenged – this is the place for you!

Responsibilities:

• Design of the data-intensive web applications.
• Optimize performance to support the fast growing business.
• Write clean maintainable code.
• On-call duties are also present on the project.

What you need for this

• At least 5 years of experience in development roles, preferably from startups (or other agile environments).
• Experience with NodeJS/Typescript (ExpressJS/NestJS) – Must!
• Experience in either Java/ Python/ Scala/ JavaScript – Advantage!
• Experience in designing high performance, highly scalable microservices architecture with OOP design-patterns and complex business logic.
• Experience in relational databases and NoSQL databases (PostgreSQL, MongoDB, Redis).
• Proficiency in design of distributed enterprise systems – Advantage!
• Passionate about technology, enjoys solving complex problems and learning new technologies.
• B.Sc in Computer Science (or equivalent).
• A team player with strong communication skills.

Обов'язки:

• Participation in internal processes improvement.
• Participation in interviews, certifications;
• Research of new technologies/complex components/non-standard APIs;
• Decomposition of complex parts of the project and their development;
• Consultations, training and mentoring;
• Quality control of performed work (code review, tests);
• Choice of technologies, project estimation in the context of certain technologies.

Що необхiдно мати:

• Strong knowledge of Node.js 14+ (at least 3 years), experience in complex projects development using Express.js.

Знання та Досвiд:

• Experience in Docker configuration;
• English level starting from intermediate;
• Ability to effectively manage own working time;
• Understanding and practical use of SOLID, DRY, KISS, YAGNI, GRASP;
• Working practice with 3rd party APIs and services;
• Good knowledge of databases (PostgreSQL, MySQL or MongoDB);
• Strong theoretical knowledge (and practical experience) of OOP, patterns and data manipulation;
• Strong theoretical knowledge of how Internet works.

Буде чудово, якщо ви також маєте:

• Experience with Nest.js.

Our client is a B2B SaaS company that empowers its clients around the world to drive growth. Their product, a marketing platform that connects data across channels, utilizes AI for predicting future behavior, and enables personalized experiences with remarkable speed.
We are currently seeking a talented and experienced Senior Backend Engineer to join our Web Development Team. If you are passionate about creating innovative web-based products using Go, Node.js, or PHP (Laravel), and are eager to take your career to the next level, this opportunity is for you.
As a Senior Backend Engineer at DICEUS, you will have the chance to collaborate with leading global brands and work with cutting-edge technologies such as Artificial Intelligence and Machine Learning. The platform you will work with handles a massive amount of requests and notifications daily, with over 100 TB of historical data. We are not passive observers; we actively create opportunities and shape the future. Currently, we serve 25% of global users. If you are intrigued by these possibilities, read on for more details!
Our Engineers and Software Developers possess an innovative mindset and leverage the limitless power of the digital world to create impressive and intelligent products. The Product and Development teams are based in our Istanbul and Ankara offices. We foster a cooperative environment that embraces the fast-paced nature of technological advancements. We work closely with other departments in agile teams and are unafraid to dive into hands-on work. We are the creators of our own success.

Responsibilities

• Develops programs, applications, and websites using PHP (Laravel), Golang and Node.js together with Vue.js and JavaScript,
• Improves performance, scalability, and availability of our systems,
• Develops cutting-edge web applications with a user-centric approach,
• Troubleshoot any issues as they arise, foresee and address potential problems proactively,
• Collaborates with co-developers and other related departments to ensure maximum efficiency and arrive at world-class results,
• Sends regular updates about project status to related stakeholders,
• Evaluate and take on tasks based on resolution priority and the greater company vision/goals.

Requirements

• Have a Bachelor’s Degree in Computer Engineering or related departments,
• Have 4+ years of software product development experience,
• Have hands-on software product experience working with JavaScript and Vue.js,
• Have hands-on experience with Shopify api’s (GraphQL and REST API)
• Have experience in at least one of NodeJS, PHP (Laravel as a plus) or Golang technologies,
• Have hands-on experience in Docker
• Are familiar with software code tools such as Git,
• Have experience driving technical projects, prioritizing work, identifying dependencies, facilitating technical decisions and cross-functional team discussions,
• Have an understanding of the Shopify App ecosystem including how they work and how they are implemented
• Have knowledge about features such as Shopify app pixel, Hydrogen, or Liquid etc.
• Have a good command of English
• Have hands-on experience in AWS (as a plus).