Jobs at Djinni

About the role

We are looking for a C/C++ Software Engineer who enjoys solving complex technical problems and writing efficient, high-quality code. You will work on performance-critical software together with experienced DSP engineers, improving existing algorithms and developing new solutions for RISC-V processor architectures. If you enjoy optimization, low-level programming, and learning new technologies, we’d love to hear from you.

Responsibilities

• Design and implement software components in C/C++.
• Develop and improve algorithms for performance-critical applications.
• Analyze and optimize code for execution speed and memory efficiency.
• Debug and troubleshoot complex software issues.
• Collaborate with software engineers and architects to deliver high-quality solutions.
• Participate in code reviews and contribute to engineering best practices.
• Learn and apply new optimization techniques and processor technologies.

Required Qualifications

• Strong C/C++ programming skills.
• Experience designing and implementing algorithms independently (not only integrating existing libraries).
• Good understanding of software engineering principles and debugging techniques.
• Strong analytical and problem-solving skills.
• Ability to work independently and as part of an international engineering team.
• Good written and spoken English.

Nice to Have

• Interest in software performance and memory optimization.
• Experience optimizing C/C++ applications.
• Experience writing compute kernels or performance-critical code.
• Familiarity with SIMD/vectorization concepts.
• Exposure to embedded software, DSP, or low-level programming.
• Familiarity with RISC-V or other processor architectures.

We are looking for a Strong Middle DevOps Engineer who will be responsible for maintaining, deploying, and supporting our on-premise enterprise product across customer environments, ensuring reliability, scalability, and smooth delivery processes.

Requirements:

• Strong Linux and Windows administration skills;
• Experience configuring and maintaining IIS and Nginx;
• Practical experience with Docker and Kubernetes (on-premise environments);
• Experience building and maintaining GitLab CI/CD pipelines;
• PostgreSQL administration and maintenance;
• MongoDB administration and maintenance;
• ELK Stack administration and monitoring;
• Strong Git knowledge and workflow management;
• Advanced understanding of networking concepts (TCP/IP, DNS, routing, firewalls);
• Solid understanding of CI/CD processes and infrastructure automation;
• Experience deploying and supporting enterprise software solutions in customer environments;
• Knowledge of modern scripting languages (at least one).

Nice to Have: 

• Experience with Infrastructure as Code tools (Terraform, Ansible);
• Experience with monitoring and observability tools (Prometheus, Grafana);
• Understanding of security best practices for on-premise infrastructure and deployments;
• Experience with backup and disaster recovery strategies;
• Experience working in highly available and distributed environments.

Responsibilities:

• Diagnose and troubleshoot infrastructure, deployment, and application issues;
• Automate product lifecycle and operational processes;
• Monitor services, applications, and infrastructure health;
• Collaborate closely with development teams and customer technical stakeholders;
• Deploy releases to testing, staging, and production environments;
• Install, configure, and maintain on-premise product deployments;
• Support product deployments across Linux, Windows, and macOS environments;
• Maintain and improve CI/CD pipelines and deployment automation;
• Optimize system performance, reliability, and scalability;
• Create and maintain technical documentation, deployment guides, and operational procedures;
• Participate in incident response, root cause analysis, and continuous improvement initiatives.

Requirements:

• Strong practical background in accounting + solid IFRS knowledge;
• 2+ years in international companies or cross-border (foreign jurisdiction) environments;
• Good understanding of tax systems, compliance, and reporting;
• Deep knowledge of Ukrainian Accounting Standards (UAS) and Tax Code of Ukraine;
• Experience improving accounting workflows, shortening closing cycles, and driving automation;
• Experience building management reporting from scratch or improving existing systems;
• Confident Excel / Google Sheets user;
• English at least B1 (written + spoken).

Nice to have:

• Exposure to EU / US / LATAM tax systems (VAT, Sales Tax, Income Tax);

• Experience handling and validating primary documents for non-resident entities.

   

Responsibilities:

• Organize and maintain financial data across multiple jurisdictions;
• Run payroll calculations and processing;
• Prepare and submit USC and PIT reporting;
• Ensure accuracy of accounting entries and financial records;
• Support external accountants and tax reporting processes;
• Participate in annual audits and prepare required audit documentation;
• Assist in monthly, quarterly, and annual financial reporting.

Job Description

Readiness to work till 12 AM Kyiv time

Strong experience with Python, BDD (behave);
4+ years of developing and bolstering automated QA systems and associated test strategies;
Experience working with business-critical customer-facing applications (user interfaces, APIs, and back-end services);
Excellent communication skills with emphasis on writing detail-oriented documents and communications;
Strong understanding of object-oriented programming concepts;
Strong understanding of web UI and services automation testing;
Knowledge in AWS, CI/CD;
Experience with AQA reporting tools;
Strong experience with web application testing tools (Selenium), API testing;
Deal well with ambiguous/undefined problems. Ability to think abstractly. A proactive approach to tasks.

Job Responsibilities

Responsible for designing and implementing build and test infrastructure, creating and enforcing. good engineering practices, and evaluating product quality for various external and/or internal products.
Conduct research and create Proof of Concepts on new testing technologies/tools/concepts.
Collecting TA metrics, statistics and reports.
Design test strategies by analyzing and dissecting complex heavily integrated software systems.
Develop and contribute to the automated testing efforts for the QA team.
Design and build scalable, maintainable, and flexible automation test framework.
Investigate the root cause of issues to assist with finding the most comprehensive and robust solutions.
Collaborate closely with product, project, and development teams to identify and resolve technical, business, and process-related issues.

Who We Are

PAR Retail, with its Open Commerce® product suite and patent pending Wallet Steering® System, empowers Convenience & Fuel Retailers to gain more share of wallet and customer lifetime value than possible with any other solution provider. PAR Retail’s unified Open Commerce product suite consists of: Activate for Intelligent 1:1 Loyalty, Transact for Contactless Commerce, and Experience for Cross-Channel Customer Experiences. PAR Retail’s solutions are supported by a set of subscription-based program management services and are contractually backed by its 1.5X Performance Guarantee.

Technology Stack:

Ruby, Ruby on Rails, Postgres, Redis, Sidekiq, GraphQl, RabbitMQ

Requirements:

- Practical experience building systems in Ruby on Rails

- At least 6 years industry experience or equivalent

- Experience building and maintaining backend APIs, including design, implementation, evolution, and maintenance

- Familiarity with TypeScript, or similar modern strongly-typed language

- Proficiency using a variety of database technologies, both relational and non-relational

- Strong understanding and familiarity with CI/CD pipelines and automated tests

- An ability to work in service-based architectures as well as well-factored Rails monolith applications

- Highly independent and able to effectively self-organize and prioritize work

- The ability to write clean code, and the discipline to write effective automated tests to deliver high-quality system improvements

- An ability to effectively break down larger bodies of work for delivery as a series of small, self-contained changes to the system

- Excellent spoken and written communication skills

- BS/MS degree in Computer Science, Engineering, or equivalent years of professional working experience

Bonus Points

- Experience with NodeJS and React

- Experience in the retail and/or fuel & convenience industries

- Experience working in distributed teams

- Experience with Nest.js and/or GraphQL

Responsibilities:

- Collaborate closely with other Engineers, design and implement new functionality based on product objectives and requirements.

- Work with the broader product engineering team to plan and coordinate feature and functionality improvements, as well as resolve bugs and execute technical enhancements, that cross-cut large parts of our platform.

- Work to continually learn, improve technology skills, expand knowledge of the our platform technologies, and gain increasing versatility across the breadth of our platform systems.

- Expand APIs and business logic, and as needed write or revise customer-facing API documentation.

- Work with our infrastructure team to enable and enhance highly-available, performant, and well-instrumented backend applications and services that run in our customer environments at substantial scale.

- Support operations and infrastructure teams for issue resolution on relevant applications or services running in production environments.

PAR Retail Offers:

- Long-term employment;

- Competitive compensation with regular performance-based salary and career development reviews;

- Paid vacations and sick leaves;

- Flexible working hours;

- A unique and friendly environment where everyone can explore and learn new technologies.

Media Buyer (Facebook | Nutra)

About Us

We are a performance marketing team focused on affiliate marketing and traffic acquisition. We are currently scaling our Nutra direction and looking for a Media Buyer who is experienced with Facebook Ads, data-driven decision-making, and campaign optimization.

Responsibilities

• Launch, manage, and optimize Facebook advertising campaigns.
• Work with Nutra offers and funnels.
• Prepare, test, and analyze creatives.
• Validate and optimize ad funnels before scaling.
• Warm up and prepare advertising accounts for launch.
• Coordinate tasks with creative, farming, and technical teams.
• Monitor campaign profitability and performance.
• Analyze key metrics such as ROI, CPL, CR, EPC, and others.
• Maintain internal reporting on creatives, campaigns, and landing pages.
• Use spy tools and research new market opportunities and approaches.

Requirements

• 3–6+ months of experience in affiliate marketing/media buying.
• Hands-on experience with Facebook Ads as the primary traffic source.
• Experience in Nutra
• Ability to provide cases, statistics, or examples of successful campaigns.
• Strong understanding of unit economics and performance metrics.
• Experience with tracking platforms (Keitaro or similar).
• Ability to independently analyze and optimize funnels.
• Understanding of creative production processes and briefing creatives.
• Basic skills in photo/video editing tools will be a plus.
• Strong analytical mindset, attention to detail, and result-oriented approach.

What We Offer

• Performance-based compensation with attractive earning potential.
• We are open to discussing candidates' compensation expectations individually.
• Access to exclusive offers from top affiliate networks.
• Resources for testing and scaling campaigns.
• Support from an experienced Team Lead and team.
• Fully remote work format.
• Opportunities for professional and financial growth.

Come Back Agency supports US software and technology companies by running their hiring process. We work with delivery and leadership teams to define roles, screen candidates, and manage interviews. Successful candidates are hired directly by the company and become part of its team.
 

Employer information:
 

This position is with a US-based software company providing custom development and AI implementation for North American clients. The team builds and maintains production software, including AI-enabled systems, and works in long-term client engagements.

Team members operate as part of an internal, distributed team and collaborate directly with client stakeholders.
 
 

What You’ll Be Doing:
 

• Develop and execute a complete SEO strategy tailored to the IT/SaaS/B2B space
• Perform technical audits and implement site-wide improvements (crawlability, indexing, site speed, etc.)
• Conduct in-depth keyword research and competitor analysis to identify content gaps and opportunities
• Optimize existing content and create SEO content briefs for high-converting landing pages and blog articles
• Collaborate with writers and developers to implement SEO best practices across content and code
• Monitor key SEO metrics (traffic, rankings, click-through rates) and adjust strategies based on data
• Stay current with algorithm updates and SEO trends to maintain a competitive edge
   

What You’ll Need:
 

• Proven experience managing SEO for IT, SaaS, or B2B companies
• Demonstrated success in the US and/or Canadian markets—experience with other regions is not relevant for this role
• Strong knowledge of on-page, off-page, and technical SEO
• Familiarity with tools like Google Search Console, Ahrefs, SEMrush, Screaming Frog, GA4
• Excellent understanding of keyword intent, content optimization, and site architecture
• Solid grasp of HTML/CSS basics and how websites are structured for SEO performance
• Strong analytical mindset with the ability to draw insights from data and present actionable recommendations

• Fluent English (B2/C1+) with strong written communication skills
   

  What We Offer:
   

• Working hours aligned with US time zones, typically 16:00–00:00 Kyiv time.
• English lessons to support clear and confident communication.
• Paid vacation and sick days.
• Fully remote work.
• Opportunities for professional growth within the team.

• Structured, personalized onboarding to help you ramp up effectively.
  
  Hiring stages: Recruiter screening → Final culture fit interview.
   

  Apply with your resume and a short note outlining your relevant experience. You can also submit it through our website at comeback.ua. Selected candidates will be contacted by Come Back Agency.

Ukraine&Abroad | Full-Time | Full-stack | Remote 

About the role

We're growing two teams and looking for skilled Software Engineers with a product mindset to join either:

• Plug&Play (AI team) — owns Git integrations, remote content, AI infrastructure, and webhooks. We're looking for someone with at least some experience or solid conceptual understanding of how modern AI/LLMs work (prompting, embeddings, RAG, agent/tool-use patterns, or similar) — you don't need to be an ML engineer, but you should be comfortable reasoning about and building around LLM-based features.
• Borshch (DevOps team) — our infrastructure team, skewed toward backend, cloud infrastructure, deployment, and DevOps. We're looking for someone hands-on with AWS and Terraform, who's comfortable moving between backend development and infrastructure/DevOps responsibilities.

Both teams work on real product features end-to-end — architecture, implementation, testing, and monitoring — with strong ownership over their area.

What you'll do

• Design the architecture for your team's area (AI infrastructure & integrations for Plug&Play; cloud infrastructure & deployment for Borshch)
• Lead full-stack feature development — from API design to UI/backend implementation
• Write reusable code and internal libraries
• Optimize applications for speed, scalability, and reliability
• Solve bugs across the stack
• Cover functionality with tests and monitoring
• Work closely with product, design, and engineering peers
• Contribute across all phases of the development lifecycle
• Bring fresh ideas and suggest new technologies relevant to your team

Who you are

• 4+ years of experience as a full-stack or backend engineer (Mid+ for Plug&Play, Senior for Borshch)
• Strong proficiency with Node.js, JavaScript, TypeScript
• Experience with NestJS
• Experience with Postgres
• Comfortable owning a feature or system end-to-end, including architectural decisions
• Strong communication — you share your thinking and ask questions proactively
• A team player who puts the mission ahead of individual preference
• Beauty and simplicity of your code
• Upper-Intermediate or higher English

Important, depending on the team:

• For Plug&Play: some experience or working knowledge of modern AI/LLMs
• For Borshch: hands-on experience with AWS and Terraform (or similar infrastructure-as-code tools), and a DevOps mindset — happy to own deployment pipelines, CI/CD, and system reliability

Nice to have

• GraphQL
• Cloud experience (AWS) — required for Borshch, a plus for Plug&Play
• Infrastructure as code (Terraform, HashiCorp)
• Experience with vector databases or LLM orchestration frameworks (LangChain, LlamaIndex, etc.)
• Experience with containerization (Docker) and orchestration (Kubernetes/ECS)
• Familiarity with observability tooling (Datadog, Grafana, Prometheus, etc.)

About us

Redocly specializes in API solutions — API design, documentation, and governance. Our tools help organizations create, manage, and optimize their APIs efficiently.

Our mission is to accelerate API ubiquity, primarily by improving developer experience. We're a team of about 60 people building products used by millions, with strong product-market fit. We use the Shape Up methodology.

https://redocly.com/ 

Redocly is trusted by leading tech, fintech, telecom, and enterprise teams to power API documentation and developer portals. Redocly’s clients range from startups to Fortune 500 enterprises.

* Feel free to try the product and sign up for a trial. When registering, please add "RECR" to your first or last name.

Working with Redocly

• Tech stack: JS, TS, Node.js, NestJS, React.js, Vitest, Postgres, AWS, Terraform
• Team sizes: small, senior-heavy teams
• Teams' location: Ukraine & Europe
• Teams have their own ownership and decide their own meeting cadence
• Work happens in 8-week cycles; teams can be mixed between cycles

Perks

• Salary: up to $7000 gross, depending on level
• Full remote
• Cooperation on Gig-contract / B2B basis - for candidates outside Ukraine
• After 1 year, eligibility to buy company shares
• ~30 days of vacation (unlimited, kept reasonable 😁)
• 10 working days of paid sick leave per year
• Public holidays per Ukrainian/EU law
• No trackers or screen recorders
• European timezone working hours, 8-hour day, typically starting 10–11 AM
• Equipment provided — MacBooks (M1–M4)
• Regular performance reviews

Hiring stages

1. Prescreening (30 min)
2. HR Call (45-60 min)
3. Technical Interview (up to 30 min)
4. Trial Day (paid) - Offer Call

Interested? Let’s connect and discuss the details!

We are a Ukrainian Defense Tech company building next-generation autonomous ground systems. Our team combines expertise in Robotics, AI, embedded systems, and autonomous navigation, including engineers with experience from global technology and DeepTech companies.

We are looking for an experienced Robotics Software Engineer to join the development of a new autonomous platform currently progressing through intensive R&D and real-world testing.

What you'll do

• Develop software for autonomous robotic systems operating in challenging environments
• Design and improve perception, localization, mapping, and navigation capabilities
• Build reliable real-time software running on edge computing platforms
• Integrate sensors, cameras, and hardware components into autonomous systems
• Work across the full development cycle, from simulation and prototyping to field deployment
• Analyze system performance and improve reliability during real-world testing
• Collaborate on system architecture and technical decision-making
   

What we're looking for

• Strong Python and/or C++ development skills
• Experience building software for robotics, autonomous systems, drones, vehicles, or embedded platforms
• Familiarity with ROS/ROS2 or similar robotics frameworks
• Experience with sensors, cameras, localization, mapping, or navigation systems
• Understanding of real-time software and deployment on edge hardware
• Comfortable debugging complex systems that interact with physical hardware
• Linux development experience

Valuable experience

• Computer vision and image processing
• SLAM, localization, sensor fusion, or state estimation
• Autonomous navigation and path planning
• Jetson, embedded GPU platforms, or edge AI deployment
• UAV, UGV, mobile robotics, or autonomous vehicle projects
• Simulation environments such as Gazebo, AirSim, Isaac Sim, or Webots
• Machine learning, object detection, or perception systems
   

What we offer

• Work on real-world autonomous systems with immediate impact
• Significant ownership and influence on technical decisions
• Fast-moving R&D environment with minimal bureaucracy
• Collaboration with a highly experienced engineering team
• Remote, hybrid, or office-based work options
• Office in central Kyiv

In Competera, we are building a place where optimal pricing decisions can be made easily. We believe that AI technologies will soon drive all challenging decisions and are capable of helping humans be better.
We are now looking for an Integration Engineer to make the Integration process at Competera clear, consistent, and repeatable.

You could be a perfect match for the position if
You want to:

• Organize technical integration between Competera Pricing Platform and customers;
• Communicate with customers’ IT and commercial teams in their business hours;
• Supervise integration partners (contractors) and assist them with ETL creation and support;
• Maintain data validation (analyze, validate, troubleshoot data issues) and suggest options for process improvement and automation.

You have:

• SQL (mid +);
• Upper-intermediate level of English;
• Transformation from business request to technical requirements;
• Presentation and business communications skills Critical thinking, problem-solving, Quick learner;

• Ability to work under minimal guidance;

  Requirements (extra):

• Basic Core Python, Airflow;
• Experience with retail, enterprise customers.

You’re gonna love it, and here’s why:

• Rich innovative software stack, freedom to choose the best suitable technologies;
• Remote-first ideology: freedom to operate from the home office or any suitable coworking;
• Flexible working hours (we start from 8 to 11 am) and no time tracking systems on;
• Regular performance and compensation reviews;
• Recurrent 1-1s and measurable OKRs;
• In-depth onboarding with a clear success track;
• Competera covers 70% of your training/course fee;
• 20 vacation days, 15 days off, and up to one week of paid Christmas holidays;
• 20 business days of sick leave;
• Partial medical insurance coverage.

Drive innovations with us. Be a Competerian.

About Archysoft

Archysoft is a software development company with over 10 years of experience delivering solutions to clients across the United States and Western Europe.

We are looking for a Senior Android Developer to maintain and further develop a mature native Android application for managing Bluetooth-enabled devices. The product also includes encrypted chats, audio and video calls, media integrations, and a Wear OS companion application.

This is a hands-on maintenance and feature-development role within a large production codebase built primarily with Kotlin, Java, RxJava 3, XML, ViewBinding, and a custom BLE stack.

The core requirement for this position is practical commercial experience combining:

• Android BLE;
• RxJava/RxAndroid;
• the classic Android View system: XML, ViewBinding, and custom views.

The main application uses RxJava 3 rather than Coroutines/Flow as its primary reactive stack. Jetpack Compose is currently used only in the Wear OS application. This is an established legacy product, not a greenfield Compose project or a full application rewrite.

In this role, you will

• Maintain and further develop a mature native Android application;
• Investigate crashes and production issues using Firebase Crashlytics;
• Implement new features and support new Android versions and devices;
• Work with a custom BLE protocol stack across several generations of physical devices;
• Work with BLE scanning, GATT services and characteristics, and read/write/notify operations;
• Improve connection management, reconnect logic, connection stability, background operation, and foreground services;
• Support DFU/OTA firmware updates;
• Maintain WebRTC audio and video calls, real-time chats, encrypted data storage, and the Wear OS companion application;
• Support Media3/ExoPlayer and Spotify integrations;
• Manage releases through Google Play, Firebase App Distribution, and alternative distribution channels;
• Support different product flavors, regional builds, and white-label configurations;
• Update dependencies, improve legacy code, reduce technical debt, and introduce unit tests;
• Participate in code reviews and collaborate with development and QA teams.

Required experience and skills

• 5+ years of commercial native Android development experience;
• Strong Senior-level ownership and the ability to work independently with a large production codebase;
• Expert knowledge of Kotlin;
• Ability to read, understand, and modify production Java code;
• Strong hands-on commercial experience with RxJava, preferably RxJava 3, including RxAndroid;
• Strong practical knowledge of the classic Android View system: XML layouts, ViewBinding, and custom views;
• Practical commercial Android BLE experience;
• Experience with GATT services and characteristics, including read/write/notify operations;
• Experience with BLE connection management, reconnect logic, background restrictions, foreground services, and connection stability;
• Experience with Hilt or Dagger 2;
• Experience with Room and Android Navigation Component;
• Experience maintaining large multi-module Gradle projects;
• Understanding of build variants, product flavors, and complex build configurations;
• Experience with the Google Play release lifecycle;
• Experience maintaining and debugging production applications;
• Ability to investigate issues and make technical decisions without constant supervision;
• English level B2 or higher.

As a plus

• RxAndroidBle or similar BLE libraries;
• OTA/DFU experience, including Realtek/RealSil or similar solutions;
• WebRTC, audio/video calls, and audio-routing experience;
• Wear OS and Jetpack Compose experience;
• End-to-end encryption, Olm/Matrix, or SQLCipher;
• Media3, ExoPlayer, or MediaSession;
• GitLab CI and fastlane;
• Firebase App Distribution;
• Experience distributing Android applications outside Google Play;
• Experience supporting applications for the Chinese market.

Technology stack

Kotlin, Java, RxJava 3, RxAndroid, RxKotlin, XML, ViewBinding, custom views, MVVM, LiveData, Hilt/Dagger 2, Retrofit, OkHttp, Room, Navigation Component, SQLCipher, RxAndroidBle, WebRTC, Media3, ExoPlayer, Firebase, Gradle, GitLab CI, fastlane, Wear OS, and Jetpack Compose.

What we offer

• Fully remote, full-time cooperation;
• A long-term product with an established user base;
• Work with technically complex mobile functionality and physical Bluetooth devices;
• A professional development plan and regular feedback;
• Compensation for approved courses and certifications;
• 20 paid working days per year for vacation and sick leave;
• Salary reviews based on performance and professional growth.

Interview process

1. Introductory interview with a recruiter;
2. Technical interview;
3. Final interview with the client or project representative.

We are looking for a talented Lead QA Engineer (Mobile) with a passion for delivering the highest quality mobile app development to play a critical role in building a useful EdTech product.

As part of our team, you will be responsible for ensuring that our product meets the highest quality standards through comprehensive testing strategies.

Ready to be part of a modern, fast-growing, #1 product in its niche while gaining extensive professional growth? Apply now!

Who are we?

memoryOS is world’s #1 app for improving memory and focus, helping people overcome forgetting curve and retain needed knowledge. Proven learning and memory techniques are merged with duolingo-like gamified e-learning with patented virtual mind palace tech. Co-founded by 2X World Memory Champion — Jonas von Essen.

We’re a remote team of 50+ diverse, like-minded professionals, united in solving the problem of the forgetting curve.

We are proud to be the Most Funded App on Kickstarter. The memoryOS was featured on TechCrunch and recognized by Google Brands Accelerator as a product that is “light years ahead of any other company in memory space”.
 

What you’ll be working on

• Conduct independent and team-based project testing.
• Create detailed and actionable bug reports for swift resolution.
• Perform regression testing, estimate task durations, and maintain thorough documentation.
• Lead and improve QA processes, tools, and tests to make releases faster and more reliable.
• Mentor QA team members, fostering skill development and best practices.
• Assess tasks for testing, analyze requirements, estimate tickets, and prioritize testing efforts.
• Stay informed about industry trends to maintain product innovation and competitiveness.
• Collaborate closely with Product, Art, Tech, and Customer Support teams to continuously improve product quality and user experience.

About you

• 5+ years of experience in Mobile QA Testing
• 2+ years of experience in Leading Role
• Proven experience in leading QA processes and mentoring team members to foster skill development and best practices.
• Proficiency with QA documentation (test cases, bug reports, etc.)
• Proficiency with Jira and experience in black box testing.
• Mobile automation QA experience
• Excellent communication skills and keen attention to detail.
• Leadership and ownership mindset.
• Proactive, reliable, and dedicated to self-improvement and ethical standards.
• Proficient in English (B1 level or higher).

You will also get:

• Comprehensive product testing and a diverse array of tasks.
• Developing solutions that have a direct impact on business.
• Transparent management, clear communication, and regular feedback.
• The opportunities to be involved in an interesting and useful product for millions of people.
• The modern team of like-minded and diverse professionals.
• Enjoy a vacation and paid sick leave days to relax every year.
• Fully remote: you are free to choose your productive work time and place.
• The opportunity to receive company shares upon reaching predefined milestones.

Getting the job

Enjoy building a top-level product with us while gaining extensive professional experience in a company with an important mission.

Step by step for this position:

1. Screening call (up to 1 hour): Position discussion, check basic competencies, and culture fit.
2. Technical interview (2 hours): Detailed сase approach to identify experience, technical skills, and core competencies.
3. Referral: Recommendations from the previous workplace.
4. Interview with CEO and CTO (30 minutes): Summarize experience and assess alignment with the company’s strategic goals. It’s the best time for any final questions.
5. Offer call (30 minutes): Discussion of a Job Offer Proposal.

Let’s make the world remember!

About Archysoft

Archysoft is a software development company with over 10 years of experience delivering solutions to clients across the United States and Western Europe.

We are looking for a Senior iOS Developer to maintain and further develop a mature native iOS application for managing Bluetooth-enabled devices. The product also includes encrypted chats, audio and video calls, media functionality, and a companion Apple Watch application.

The project has been actively developed since 2018 and includes a large Swift codebase, multiple application targets, regional builds, and integrations with physical devices.

In this role, you will:

• Maintain and further develop the native iOS application;
• Investigate production issues and crashes;
• Implement new features and support new iOS versions and devices;
• Work with Bluetooth Low Energy, custom device protocols, background connections, and OTA firmware updates;
• Maintain WebRTC calls, CallKit integration, encrypted chats, and secure local storage;
• Support the Apple Watch application and background audio functionality;
• Manage TestFlight and App Store releases;
• Maintain multiple application targets and regional configurations;
• Update dependencies and gradually improve legacy code;

• Participate in code reviews and collaborate with development and QA teams.

   

Required experience and skills

• 5+ years of commercial iOS development experience;
• Expert knowledge of Swift;
• Strong commercial experience with UIKit, Storyboards, XIB, Auto Layout, and custom views;
• Strong experience with RxSwift, RxCocoa, and reactive programming;
• Practical experience with CoreBluetooth and BLE, including GATT, background modes, and connection stability;
• Ability to read and modify Objective-C code;
• Experience with local databases, Keychain, and sensitive or encrypted data;
• Strong knowledge of Swift Package Manager;
• Experience maintaining large multi-target Xcode projects;
• Experience with fastlane, TestFlight, and App Store releases;
• Strong production debugging skills;
• Ability to work independently;

• English level B2 or higher.

   

As a plus

• Experience with RxBluetoothKit and OTA/DFU firmware updates;
• WebRTC and CallKit experience;
• Apple Watch or watchOS development experience;
• Experience with end-to-end encryption technologies such as Olm or Matrix;
• Experience with Realm and encrypted local storage;
• GitLab CI, fastlane Match, and self-hosted macOS runners;

• Experience supporting applications for the Chinese market.

   

Technology stack

Swift, Objective-C, UIKit, MVVM, RxSwift, RxCocoa, Moya, Alamofire, CoreBluetooth, RxBluetoothKit, Realm, WebRTC, CallKit, Firebase, SPM, GitLab CI, fastlane, watchOS.

What we offer

• Fully remote, full-time cooperation;
• A long-term product with an established user base;
• Work with complex native mobile functionality and physical devices;
• Professional development plan and regular feedback;
• Compensation for approved courses and certifications;
• 20 paid working days per year for vacation and sick leave;

• Salary reviews based on performance and professional growth.

   

Interview process

• Introductory interview with a recruiter;
• Technical interview;
• Final interview with the client or project representative.

Location: Remote form EU, occasional business trips to Munich
Languages: English and German
Type of the project: SAP S/4HANA Transformation

Requirements

Mandatory
• 8–10+ years of experience in SAP Basis Administration.
• Deep understanding of SAP System Landscape Architecture.
• Hands-on experience in SAP S/4HANA Transformation Projects.
• Expertise in SAP HANA Database Administration.
• Experience with: SAP Installation; System Copy; Upgrades; Migration; Performance Tuning; Monitoring.
• Experience in SAP technical architecture design.
• Excellent technical documentation skills.
• Experience in client-facing roles and technical consulting.
• Strong communication skills.
• Fluent German.
• Good English.

Nice to have
 

• SAP Certifications.
• Experience in international enterprise-scale projects.
• Experience with high‑load SAP landscapes.
• Knowledge of SAP Solution Manager.
• Experience with Cloud infrastructure (Azure/AWS/GCP for SAP).
• Experience in SAP Basis automation.

Key Responsibilities

• Advising clients on the analysis, optimization, and development of their SAP Basis Landscape.
• Designing and overseeing SAP Basis architecture.
• Preparing technical documentation and establishing documentation standards.
• Providing technical support for migration projects and transitions to SAP S/4HANA.
• Architectural consulting on the evolution of the SAP System Landscape.
• Developing technical roadmaps and strategic recommendations.
• Consulting on SAP HANA Database, including: Database Architecture; Performance Optimization; Monitoring; Migration.
• Supporting and optimizing SAP system performance.
• Conducting knowledge transfer sessions for the client's internal teams.
• Coordinating technical requirements with all project stakeholders.
• Collaborating with infrastructure teams and architects.

We are looking for a visionary and hands-on Senior Backend Developer / Tech Lead to drive the technical evolution of our high-performance microservices ecosystem at Dataforest. If you are passionate about building scalable, high-load systems, defining architectural patterns, and guiding a talented engineering team in a healthy, flexible working environment — we want you on board!

    Technical Requirements:

• 4+ years of commercial experience in backend development using Python;
• Proven track record of designing and scaling high-load (Highload) applications and distributed systems;
• Deep expertise in FastAPI (advanced async patterns, dependency injection, architecture optimization, Pydantic v2);
• Extensive hands-on experience with GraphQL in production (advanced schema design, federation/subgraphs, N+1 problem resolution, resolver optimization);
• Strong mastery of asynchronous programming in Python (asyncio, advanced concurrency models);
• Production experience with AWS infrastructure;
• Advanced knowledge of SQL  databases, mastering query optimization, indexing strategies, and database sharding/replication (e.g., PostgreSQL + SQLAlchemy/Tortoise);
• Deep understanding of microservices patterns (Event-Driven Architecture, CQRS, Saga pattern, API Gateways, Service Mesh).
   

     Optional skills (as a plus):

• Experience with specialized GraphQL tools like Strawberry, Ariadne, or Apollo Router/Federation;
• Advanced usage of Redis (caching strategies, pub/sub);
• Experience with message brokers and task queues (Kafka, RabbitMQ, Celery) under heavy loads.
• Experience with third party integrations (payments, iGaming platforms, CRM and similar).
   

    Key Responsibilities:

• Architecture & Leadership: Design, build, and maintain scalable backend architectures using FastAPI and GraphQL; establish best practices, code standards, and technical roadmaps;
• High-Load Optimization: Solve complex scalability challenges, optimize system performance, eliminate bottlenecks, and ensure low-latency data delivery;
• Microservices & Infrastructure: Own the integration and evolution of a highly distributed microservices mesh built on AWS;
• Mentorship & Code Quality: Lead technical discussions, conduct rigorous code reviews, and mentor Middle/Junior developers, fostering a culture of engineering excellence;

• Cross-functional Collaboration: Act as a key technical point of contact, collaborating with Data Science, Data Engineering, and product stakeholders to design robust data-retrieval and processing APIs.
   

  We offer:

• Great networking opportunities with international clients, challenging tasks;
• Building interesting projects from scratch using new technologies;
• Personal and professional development opportunities;
• Competitive salary fixed in USD;
• Paid vacation and sick leaves;
• Flexible work schedule;
• Friendly working environment with minimal hierarchy;
• Team building activities, corporate events.